taxonID	type	description	language	source
EC62878D5145BF3AFF0FDD57FB0E0D6A.taxon	materials_examined	Material examined. 1 M in one locality (Fig. 1). TALUD III. St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 M, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12772).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5145BF3AFF0FDD57FB0E0D6A.taxon	distribution	Distribution. Atlantic and Indian Oceans, Mediterranean Sea (Vinogradov et al. 1996, García Madrigal 2007). In the eastern Pacific from California, USA, to Baja California and the Gulf of California, Mexico, and south to 38 ° 6 ’ S, 88 ° 02 ’ W (García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5145BF3AFF0FDD57FB0E0D6A.taxon	discussion	Remarks. Siegel-Causey (1982) reported H. luzoni as a very rare species in the Gulf of California. During his study it was recorded from two sites only, in the epipelagic layers in the southern Gulf and in deep water (1087 m) in the northern Gulf. García Madrigal (2007) mentioned it as an epipelagic, coastal species.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FD8AEFB830A0D.taxon	materials_examined	Material examined. 15 M, 1 F in five localities (Fig. 1). TALUD III. St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 F, I-K, from surface to 600 m (TD, 1890 m) (ECO-CH-Z- 10382). TALUD VII. St. 15 B (23 ° 25 ’ 06 ” N, 107 ° 47 ’ 31 ” N), June 7, 2001, 1 M, MN, from surface to 1425 m (TD, 2320 m) (ECO-CH-Z- 10398); St. 36 (25 ° 42 ’ 37 ” N, 110 ° 04 ’ 35 ” W), June 9, 2001, 3 M, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU- 12773). TALUD XII. St. 15 C (17 ° 27 ’ 51 ” N, 102 ° 10 ’ 43 ” W), March 31, 2008, 1 M, MN, from surface to 1530 m (TD, 1880 m) (ICML-EMU- 12774).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FD8AEFB830A0D.taxon	distribution	Distribution. Cosmopolitan in warm seas. In the eastern Pacific distributed off the Columbia River, USA, western Baja California, and to the Gulf of California, Mexico (Brusca & Hendrickx 2005; García Madrigal 2007). Our observations allow an extension of its southernmost distribution limit in the eastern Pacific to SW Mexico (17 ° 27 ’ 51 ” N). Present in surface waters (Vinogradov et al. 1996).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FD8AEFB830A0D.taxon	discussion	Remarks. Siegel-Causey (1982) reported this species in the southern Gulf of California in three seasons and classified it as an “ uncommon ” species in the area but noted its presence throughout the Gulf in earlier samplings. A surface water species, recorded in the 0 ‒ 66 m depth layer (García Madrigal 2007), but also mentioned as a “ middepth ” species by Siegel-Causey (1982), roughly in the 100 ‒ 500 m depth range.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FDF85FB4A08FA.taxon	materials_examined	Material examined. 1 M in one locality (Fig. 1). TALUD III, St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 1 M, I-K, surface to 410 m (TD, 920 m) (ICML-EMU- 12775).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FDF85FB4A08FA.taxon	distribution	Distribution. Cosmopolitan in warm seas (Vinogradov et al. 1996). In the eastern Pacific from off the Columbia River, USA, off western Baja California, and in the southern Gulf of California, Mexico (Brusca & Hendrickx 2005, García-Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5146BF3AFF0FDF85FB4A08FA.taxon	discussion	Remarks. A shallow water species, Siegel-Causey (1982) reported it as abundant in the Central Pacific gyre and less abundant in the Gulf of California. In the 0 – 200 m depth range (García-Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5147BF3BFF0FDEF9FAE808BD.taxon	materials_examined	Material examined. 8 M, 2 F, in six localities (Fig. 2). TALUD III, St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 2 M, 1 F, I-K, surface to 410 m (TD, 920 m) (ECO-CH-Z- 10384); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 M, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12776 A). TALUD IV, St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000, 1 M, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12776 B). TALUD VI. St. 22 (24 ° 17 ’ 34 ” N, 108 ° 50 ’ 25 ” W), March 15, 2001, 1 F, MN, from surface to 1410 m (TD, 1760 m) (ICML-EMU- 12776 C). TALUD XI. St. 6 A (16 ° 58 ’ 00 ” N, 100 ° 57 ’ 00 ” W), June 7, 2007, 2 M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU- 12777 A); St. 19 B (16 ° 59 ’ 39 ” N, 100 ° 58 ’ 07 ” W), March 28, 2008, 2 M, MN, from surface to 1200 m (TD, 1995 m) (ICML-EMU- 12777 B).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5147BF3BFF0FDEF9FAE808BD.taxon	distribution	Distribution. Cosmopolitan in warm waters. In the eastern Pacific from California, USA, to western Baja California and Gulf of California, Mexico (Brusca & Hendrickx 2005, García-Madrigal 2007). Another abundant lestrigonid in the Central Pacific gyre, H. vosseleri has been reported as relatively common in the central and southern Gulf of California (Siegel-Causey 1992).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5147BF3BFF0FDEF9FAE808BD.taxon	discussion	Remarks. In the 150 ‒ 450 m depth range (Siegel-Causey 1992); 0 ‒ 200 m (Vinogradov et al. 1996, García-Madrigal 2007). Highly abundant in the Mexican tropical Pacific area during ENSO conditions (Gasca et al. 2012).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5140BF3CFF0FDAF3FDC00CEE.taxon	materials_examined	Material examined. 2 M, in one locality (Fig. 2). TALUD V. St. 5 (22 ° 00 ’ 57 ” N, 106 ° 40 ’ 00 ” W), December 13, 2000, 2 M, MN, from surface to ca 1400 m (TD> 1600 m) (ICML-EMU- 12778).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5140BF3CFF0FDAF3FDC00CEE.taxon	distribution	Distribution. Atlantic, Pacific, Indian Oceans, and Mediterranean Sea (Vinogradov et al. 1996). In the eastern Pacific from the Columbia River, USA, to Baja California and off Cabo San Lucas, in the southern Gulf of California, Mexico (Brusca & Hendrickx 2005, García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5140BF3CFF0FDAF3FDC00CEE.taxon	discussion	Remarks. Commonly found in the Gulf of California, particularly in the southern part (Siegel-Causey 1982). Other records in the Gulf of California are from 23 ° 54 ’ 27 ” N, 111 ° 20 ’ 21 ” W and 23 ° 50 ’ 30 ” N, 111 ° 15 ’ 45 ” W (García Madrigal, 2007). Mostly epipelagic and partly mesopelagic (surface to 200 ‒ 300 m), occasionally deeper (500 ‒ 600 m) (Vinogradov et al. 1996). According to García Madrigal (2007) this species occurs between surface and 680 m depth. The specimens examined are partially damaged and somewhat transparent, but shows the main distinctive characteristic of the species, i. e., eyes limited to the upper part of the head, and dactyls of PV to PVII shorter than in H. sibaginis, its only known congener. Also, the 3 - segmented peduncle of antennae 1 and 2 is characteristic of this species and observable in our specimen.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5141BF3EFF0FDABBFC670DAB.taxon	materials_examined	Material examined. 154 M, 182 F in 24 localities (Fig. 3). TALUD I, St. 6 (23 ° 15 ’ 54 ” N, 107 ° 31 ’ 12 ” W), December 12, 1989, 2 F, BO, from surface to ca. 200 m (TD, 1550 m) (ECO-CH-Z- 10385). TALUD III. St. 3 B (22 ° 36 ’ 36 ” N, 106 ° 35 ’ 54 ” W), August 17, 1991, 1 M, 9 F, I-K, from surface to 275 m (TD, 1585 m) (ICML-EMU- 12779 A); St. 6 (23 º 17 ’ 54 ” N, 107 º 30 ’ 18 ” W), August 18, 1991, 1 M, AD from surface to 996 ‒ 1148 (ECO-CH-Z- 10386); St. 10 B (23 ° 43 ’ 24 ” N, 107 ° 39 ’ 06 ” W), August 18, 1991, 12 M, 8 F, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU- 12779 B); St. 18 (ca. 25 ° N, 109 ° W), August 19, 1991, 1 M, I-K (depth not registered) (ICML-EMU- 12779 C); St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 28 M, 48 F, I-K, surface to 410 m (TD, 920 m) (ICML-EMU- 12779 D); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 2 M, 2 F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12780 A); St. 25 A 1 (25 ° 51 ’ 00 ” N, 109 ° 57 ’ 00 ” W), August 21, 1991, 27 M, 18 F, I-K, from surface to 200 m (TD, 1280 ‒ 1360 m) (ICML-EMU- 12780 B); St. 25 A 2 (25 ° 50 ’ 54 ” N, 109 ° 56 ’ 54 ” W), August 21, 1991, 43 M, 69 F, I-K, from surface to 230 m (TD, 1250 ‒ 1328 m) (ICML-EMU- 12780 C). TALUD IV. St. 15 (23 ° 23 ’ 30 ” N, 107 ° 47 ’ 48 ” W), August 24, 2000, 1 F, MN, from surface to 1500 m (TD, 2350 m) (ICML-EMU- 12781 A); St. 25 A 2 (25 ° 50 ’ 54 ” N, 109 ° 56 ’ 54 ” W), August 21, 1991, 5 M, 7 F, I-K, from surface to 230 m (TD, not measured) (ICML-EMU- 12781 B). TALUD VI. St. 7 (22 ° 21 ’ 39 ” N, 107 ° 01 ’ 42 ” W), March 14, 2001, 5 M, MN, from surface to 1305 m (TD, 2100 m) (ICML-EMU- 12782 A); St. 29 (25 ° 16 ’ 24 ” N, 109 ° 24 ’ 54 ” W), March 16, 2001, 6 M, 17 F, MN, from surface to 1440 m (TD, 2080 m) (ICML-EMU- 12782 B); St. 36 (2) (25 ° 53 ’ 15 ” N, 110 ° 10 ’ 06 ” W), March 17, 2001, 2 M, MN, from surface to 1360 m (TD, 2000 m) (ICML-EMU- 12782 C). TALUD VII, St. 15 B (23 ° 25 ’ N, 107 ° 49 ’ W), June 7, 2001, 1 M, 1 F, MN, from surface to 1425 m (TD, 2320 m) (ICML-EMU- 12783 A); St. 29 (25 ° 17 ’ 31 ” N, 109 ° 24 ’ 30 ” W), June 8, 2001, 6 M, MN, from surface to 1335 m (TD, 2080 m) (ICML-EMU- 12783 B). TALUD X. St. 7 (27 ° 53 ’ 09 ” N, 112 ° 16 ’ 42 ” W), February 10, 2007, 1 M, MN, from surface to 900 m (TD, 1191 m) (ICML-EMU- 12784 A); St. 11 (27 ° 34 ’ 16 ” N, 111 ° 40 ’ W), February 11, 2007, 3 M, 1 F, MN, from surface to 1215 m (TD, 1801 m) (ICML-EMU- 12784 B); St. 23 (27 ° 00 ’ 30 ” N, 111 ° 12 ’ 00 ” W), February 14, 2007, 1 M, MN, from surface to ca. 1250 m (TD, 1770 m) (ICML-EMU- 12784 C). TALUD XI. St. 6 A (16 ° 58 ’ 00 ” N, 100 ° 57 ’ 00 ” W), June 7, 2007, 6 M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU- 12785 A). TALUD XI. St. 19 B (17 ° 56 ’ 00 ” N, 103 ° 10 ’ 00 ” W), June 9, 2007, 13 M, MN, from surface to 1490 m (TD, 1750 m) (ECO-CH-Z- 10383). TALUD XII. St. 4 (16 ° 59 ’ 39 ” N, 100 ° 58 ’ 07 ” W), March 28, 2008, 2 M, MN, from surface to 1200 m (TD, 1995 m) (ICML-EMU- 12785 B); St. 28 B (18 ° 56 ’ 00 ” N, 104 ° 59 ’ 57 ” W), April 2, 2008, 1 M, MN, from surface to 1425 m (TD, 2041 m) (ICML-EMU- 12785 C).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5141BF3EFF0FDABBFC670DAB.taxon	distribution	Distribution. Pacific Ocean. In the eastern Pacific from California, USA, and the Gulf of California, Mexico, to Panama (Brusca & Hendrickx 2005, García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5141BF3EFF0FDABBFC670DAB.taxon	discussion	Remarks. Siegel-Causey (1992) reported H. sibaginis as an uncommon species in the southern Gulf of California, with a distribution pattern similar to H. longipes. According to García Madrigal (2007) this species occurs between 0 ‒ 200 m. It was one of the two most abundant species in this survey.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5142BF3FFF0FD9A7FDAE08F5.taxon	materials_examined	Material examined. 388 M, 174 F, in 31 localities (Fig. 4). TALUD I. St. 5 (ca. 23 ° 16 ’ N, 107 ° 31 ’ W), December 11, 1989, 1 M, BO, from surface to ca. 200 m (TD> 1500 m) (ICML-EMU- 12786 A). TALUD III. St. 3 B (22 ° 36 ’ 36 ” N, 106 ° 35 ’ 54 ” W), August 17, 1991, 23 M, 8 F, I-K, from surface to 275 m (TD, ca. 650 m) (ECO-CH-Z- 10387); St. 10 B (23 ° 43 ’ 24 ” N, 107 ° 39 ’ 06 ” W), August 18, 1991, 10 M, 1 F, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU- 12786 B); St. 18 (ca. 25 ° N, 109 ° W), August 19, 1991, 1 M, I-K, depth not registered (TD> 1500 m) (ICML-EMU- 12786 C); St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 19 M, 25 F, I-K, surface to 410 m (TD, 920 m) (ICML-EMU- 12786 D); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 14 M, 7 F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12787 A); St. 25 A 1 (25 ° 51 ’ 00 ” N, 109 ° 57 ’ 00 ” W), August 21, 1991, 118 M, 47 F, I-K, from surface to 200 m (TD, 1280 ‒ 1360 m) (ICML-EMU- 12787 B); St. 25 A 2 (25 ° 50 ’ 54 ” N, 109 ° 56 ’ 54 ” W), August 21, 1991, 5 M, 12 F, I-K, from surface to 230 m (TD, not measured) (ICML-EMU- 12787 C); St. 25 B (25 ° 43 ’ 18 ” N, 109 ° 47 ’ 24 ” W), August 23, 1991, 54 M, 20 H, I-K, from surface to 150 m (TD, ca. 1100 m) (ICML-EMU- 12787 D). TALUD IV. St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000, 3 M, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12788 A); St. 22 (24 ° 17 ’ 20 ” N, 108 ° 50 ’ 30 ” W), August 26, 2000, 5 F, MN, from surface to 1325 m (TD, ca. 1800 m) (ICML-EMU- 12788 B); St. 25 A 2 (24 ° 54 ’ N, 108 ° 59 ’ W), August 26, 2000, 3 M, 9 F, BS, from surface to ca. 800 m (ICML-EMU- 12788 C). TALUD V. St. 29 (25 ° 14 ’ 36 ” N, 109 ° 24 ’ 15 ” W), December 17, 2000, 1 M, 1 F, MN, from surface to 1290 m (TD, 2040 m) (ECO-CH-Z- 10388); St. 36 (25 ° 54 ’ 30 ” N, 110 ° 11 ’ 24 ” W), December 17, 2000, 5 M, 15 F, MN, from surface to 1340 m (TD, 1990 m) (ICML-EMU- 12789). TALUD VI. St. 7 (22 ° 21 ’ 39 ” N, 107 ° 01 ’ 42 ” W), March 14, 2001, 29 M, 11 F, MN, from surface to 1305 m (TD, 2100 m) (ICML-EMU- 12790 A); St. 15 (23 ° 14 ’ 42 ” N, 107 ° 30 ’ 00 ” W), March 14, 2001, 1 M, MN, from surface to 1230 m (TD, 2390 m) (ICML-EMU- 12790 B); St. 22 (24 ° 17 ’ 34 ” N, 108 ° 50 ’ 25 ” W), March 15, 2001, 6 M, 3 F, MN, from surface to 1410 m (TD, 1760 m) (ICML-EMU- 12790 C); St. 29 (25 ° 16 ’ 24 ” N, 109 ° 24 ’ 54 ” W), March 16, 2001, 43 M, 10 F, MN, from surface to 1440 m (TD, 2080 m) (ICML-EMU- 12790 D); St. 36 (25 ° 53 ’ 15 ” N, 110 ° 10 ’ 06 ” W), March 17, 2001, 7 M, 6 F, MN, from surface to 1360 m (TD, 2000 m) (ICML-EMU- 12790 E). TALUD VII, St. 15 (23 ° 25 ’ 06 ” N, 107 ° 47 ’ 31 ” W), June 7, 2001, 2 M, 3 F, MN, from surface to 1425 m (TD, 2320 m) (ICML-EMU- 12791 A); St. 22 (24 ° 21 ’ 08 ” N, 108 ° 55 ° 14 ” W), 3 M, 3 F, MN, from surface to 1415 m (TD, 2000 m) (ICML-EMU- 12791 B). St. 29 (25 ° 17 ’ 31 ” N, 109 ° 24 ’ 30 ” W), June 8, 2001, 5 M, 1 F, MN, from surface to 1335 m (TD, 2080 m) (ICML-EMU- 12791 C); St. 36 (25 ° 42 ’ 37 ” N, 110 ° 04 ’ 35 ” W), June 9, 2001, 13 M, 2 F, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU- 12791 D). TALUD X, St. 7 (27 ° 53 ’ 09 ” N, 112 ° 16 ’ 42 ” W), February 10, 2007, 4 M, MN, from surface to 900 m (TD 1191 m) (ICML-EMU- 12792 A); St. 11 (27 ° 34 ’ 16 ” N, 111 ° 40 ’ W), February 11, 2007, 7 M, 2 F, MN, from surface to 1215 m (TD, 1801 m) (ICML-EMU- 12792 B); St. 20 (27 ° 14 ’ 41 ” N, 111 ° 36 ’ 15 ” W), February 13, 2007, 4 M, 1 F, MN, from surface to ca. 1250 m (TD, 1785 m) (ICML-EMU- 12792 C); St. 23 (27 ° 00 ’ 30 ” N, 111 ° 12 ’ 00 ” W), February 14, 2007, 4 M, 5 F, MN, from surface to ca. 1250 m (TD, 1770 m) (ICML-EMU- 12792 D). TALUD XI. St. 6 A (16 ° 58 ’ 00 ” N, 100 ° 57 ’ 00 ” W), June 7, 2007, 1 M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU- 12793 A). TALUD XII. St. 15 C (17 ° 27 ’ 51 ” N, 102 ° 10 ’ 43 ” W), March 31, 2008, 3 M, MN, from surface to 1530 m (TD, 1880 m) (ICML-EMU- 12793 B).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5142BF3FFF0FD9A7FDAE08F5.taxon	distribution	Distribution. Circumtropical (Vinogradov et al. 1996). In the eastern Pacific from the west coast of Baja California to the Galapagos Islands (García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D5142BF3FFF0FD9A7FDAE08F5.taxon	discussion	Remarks. According to Siegel-Causey (1982: 177, fig. 69), L. bengalensis is strongly epipelagic but features a very wide overall depth distribution, ranging from surface to depths> 2200 m. Reported in surface waters by Vinogradov et al. (1996). García Madrigal (2007) reported a 0 ‒ 3220 m depth distributional range. It was one of the two most abundant species in this survey.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF30FF0FDABBFC3F0C40.taxon	materials_examined	Material examined. 5 M, 4 F, in 6 localities (Fig. 5). TALUD III. St. 3 B (22 ° 36 ’ 36 ” N, 106 ° 35 ’ 54 ” W), August 17, 1991, 3 M, I-K, from surface to 275 m (TD, ca. 650 m) (ICML-EMU- 12794 A); St. 10 B (23 ° 43 ’ 24 ” N, 107 ° 39 ’ 06 ” W), August 18, 1991, 1 F, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU- 12794 B); St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 2 F, I-K, surface to 410 m (TD, 920 m) (ECO-CH-Z- 10389). TALUD IV St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000, 1 F, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12795 A). TALUD V. St. 5 (22 ° 00 ’ 57 ” N, 106 ° 40 ’ 00 ” W), December 13, 2000, 1 M, MN, from surface to ca. 1400 m (TD> 1600 m) (ICML-EMU- 12795 B). TALUD XI. St. 19 B (17 ° 56 ’ 00 ” N, 103 ° 10 ’ 00 ” W), June 9, 2007, 1 M, MN, from surface to 1490 m (TD, 1750 m) (ICML-EMU- 12796).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF30FF0FDABBFC3F0C40.taxon	distribution	Distribution. Southeastern Atlantic and tropical north Pacific (Vinogradov et al. 1996). The present western Mexico records are the third documented for the eastern Pacific: central Gulf of California to off SW Mexico (17 ° 56 ’ 00 ” N) (Fig. 5).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF30FF0FDABBFC3F0C40.taxon	discussion	Remark s. Reported in the upper 100 m (Vinogradov et al. 1996).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF31FF0FD97FFC370C06.taxon	materials_examined	Material examined. 26 M, 2 F, in 12 localities (Fig. 5). TALUD I. St. 6 (23 ° 15 ’ 54 ” N, 107 ° 31 ’ 12 ” W), December 12, 1989, 3 M, BO, from surface to ca. 200 m (TD, 1550 m) (ICML-EMU- 12797 A). TALUD III. St. 3 B (22 ° 36 ’ 36 ” N, 106 ° 35 ’ 54 ” W), August 17, 1991, 2 M, I-K, from surface to 275 m (TD, 430 ‒ 480 m) (ICML-EMU- 12797 B); St. 10 B (23 ° 43 ’ 24 ” N, 107 ° 39 ’ 06 ” W), August 18, 1991, 1 M, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU- 12797 C); St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 2 M, 1 F, I-K, surface to 410 m (TD, 920 m) (ICML-EMU- 12797 D); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 4 M, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12798 A); St. 25 A 1 (25 ° 51 ’ 00 ” N, 109 ° 57 ’ 00 ” W), August 21, 1991, 1 M, I-K, from surface to 200 m (TD, 1280 ‒ 1360 m) (ICML-EMU- 12798 B); St. 25 B (25 ° 43 ’ 18 ” N, 109 ° 47 ’ 24 ” W), August 23, 1991, 1 M, 1 F, I-K, from surface to 150 m (TD, ca. 1100 m) (ECO-CH-Z- 10390). TALUD IV St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000, 1 M, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12797 C). TALUD VI, St. 29 (25 ° 16 ’ 24 ” N, 109 ° 24 ’ 54 ” W), March 16, 2001, 1 M, MN, from surface to 1440 m (TD, 2080 m) (ICML-EMU- 12797 D). TALUD X. St. 20 (27 ° 14 ’ 41 ” N, 111 ° 36 ’ 15 ” W), February 13, 2007, 2 M, MN, from surface to ca. 1250 m (TD, 1785 m) (ECO-CH-Z- 10391); St. 23 (27 ° 00 ’ 30 ” N, 111 ° 12 ’ 00 ” W), February 14, 2007, 3 M, MN, from surface to ca. 1250 m (TD, 1770 m) (ICML-EMU- 12799 - A). TALUD XII. St. 15 C (17 ° 27 ’ 51 ” N, 102 ° 10 ’ 43 ” W), March 31, 2008, 5 M, MN, from surface to 1530 m (TD, 1880 m) (ICML-EMU- 12799 B).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF31FF0FD97FFC370C06.taxon	distribution	Distribution. Circumtropical (Vinogradov et al. 1996). In the eastern Pacific from 22 ° 42 ’ N, 109 ° 20 ’ W to 28 ° 08 ’ N, 111 ° 53 ’ W in the Gulf of California, Mexico (García-Madrigal 2007). Our data extend its southernmost geographic limit in the eastern Pacific to off SW Mexico, at 17 ° 27 ’ 51 ” N.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514CBF31FF0FD97FFC370C06.taxon	discussion	Remarks. Considered rare in the central and southern Gulf of California, between 0 and 150 m (Siegel-Causey 1982: 183); 0 ‒ 100 m (Vinogradov et al. 1986, García-Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514DBF32FF0FD982FEDF0EF7.taxon	materials_examined	Material examined. 38 M, 43 F, in 19 localities (Fig. 6). TALUD I. St. 6 (23 ° 15 ’ 54 ” N, 107 ° 31 ’ 12 ” W), December 12, 1989, 3 M, 4 F, BO, from surface to ca. 200 m (TD, 1550 m) (ICML-EMU- 12800 A). TALUD III. St. 6 (23 º 17 ’ 54 ” N, 107 º 30 ’ 18 ” W), August 18, 1991, 2 F, BS, from surface to 996 ‒ 1148 (ICML-EMU- 12800 B); St. 10 B (23 ° 43 ’ 24 ” N, 107 ° 39 ’ 06 ” W), August 18, 1991, 1 M, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU- 12800 C); St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 1 M, 3 F, I-K, surface to 410 m (TD, 920 m) (ECO-CH-Z- 10392); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 4 M, 4 F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12800 D). TALUD IV St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000, 3 F, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12801 A); St. 15 (23 ° 23 ’ 30 ” N, 107 ° 47 ’ 48 ” W), August 24, 2000, 13 F, MN, from surface to 1500 m (TD, 2350 m) (ICML-EMU- 12801 B); St. 29 (24 ° 57 ’ 48 ” N, 109 ° 37 ’ 00 ” W), August 27, 2000, 1 M, 3 F, MN, from surface to 1280 m (TD, 2080 m) (ICML-EMU- 12801 C). TALUD V. St. 5 (22 ° 00 ’ 57 ” N, 106 ° 40 ’ 00 ” W), December 13, 2000, 2 M, 2 F, MN, from surface to ca. 1400 m (TD> 1600 m) (ECO-CH-Z- 10393). TALUD VI. St. 7 (22 ° 21 ’ 39 ” N, 107 ° 01 ’ 42 ” W), March 14, 2001, 16 M, 3 F, MN, from surface to 1305 m (TD, 2100 m) (ICML-EMU- 12802 A); St. 22 (24 ° 17 ’ 34 ” N, 108 ° 50 ’ 25 ” W), March 15, 2001, 1 M, MN, from surface to 1410 m (TD, 1760 m) (ICML-EMU- 12802 B); St. 29 (25 ° 16 ’ 24 ” N, 109 ° 24 ’ 54 ” W), March 16, 2001, 1 F, MN, from surface to 1440 m (TD, 2080 m) (ICML-EMU- 12802 C). TALUD VII, St. 15 B (23 ° 25 ’ 06 ” N, 107 ° 47 ’ 31 ” W), June 7, 2001, 3 M, 1 F, MN, from surface to 1425 m (TD, 2320 m) (ICML-EMU- 12803 A); St. 36 (25 ° 42 ’ 37 ” N, 110 ° 04 ’ 35 ” W), June 9, 2001, 2 F, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU- 12803 B). TALUD XI. St. 6 A (16 ° 58 ’ 00 ” N, 100 ° 57 ’ 00 ” W), June 7, 2007, 4 M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU- 12804 A). TALUD XII. St. 4 (16 ° 59 ’ 39 ” N, 100 ° 58 ’ 07 ” W), March 28, 2008, 1 F, MN, from surface to 1200 m (TD, 1995 m) (ICML-EMU- 12804 B); St. 15 C (17 ° 27 ’ 51 ” N, 102 ° 10 ’ 43 ” W), March 31, 2008, 1 M, MN, from surface to 1530 m (TD, 1880 m) (ICML-EMU- 12804 C); St. 28 B (18 ° 56 ’ 00 ” N, 104 ° 59 ’ 57 ” W), April 2, 2008, 2 F, MN, from surface to 1425 m (TD, 2041 m) (ICML-EMU- 12804 D).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514DBF32FF0FD982FEDF0EF7.taxon	distribution	Distribution. Cosmopolitan (Vinogradov et al. 1996). In the eastern Pacific from off the Columbia River, off western Baja California, and in the Gulf of California, Mexico (Siegel-Causey 1982, García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514DBF32FF0FD982FEDF0EF7.taxon	discussion	Remarks. Siegel-Causey (1982) reported this species as a common inhabitant in the northern, central and southern Gulf of California. From 0 to 200 m depth (Vinogradov et al. 1996, García Madrigal 2007). Gasca et al. (2012) found it among the most abundant species in the Mexican tropical Pacific area linked to the California Current conditions.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514EBF33FF0FDC24FB480D43.taxon	materials_examined	Material examined. 13 M, 15 F, in 8 localities (Fig. 7). TALUD III. St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 M, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12805 A). TALUD IV St. 7 (22 ° 00 ’ 22 ” N, 106 ° 49 ’ 18 ” W), August 23, 2000), 1 F, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU- 12805 B); St. 22 (24 ° 17 ’ 20 ” N, 108 ° 50 ’ 30 ” W), August 26, 2000, 1 F, MN, from surface to 1325 m (TD, ca. 1800 m) (ICML-EMU- 12805 C). TALUD V. St. 29 (25 ° 14 ’ 36 ” N, 109 ° 24 ’ 15 ” W), December 17, 2000, 1 F, MN, from surface to 1290 m (TD, 2040 m) (ECO-CH-Z- 10394). TALUD VI. St. 7 (22 ° 21 ’ 39 ” N, 107 ° 01 ’ 42 ” W), March 14, 2001, 8 M, 12 F, MN, from surface to 1305 m (TD, 2100 m) (ICML-EMU- 12806). TALUD VII. St. 36 (25 ° 42 ’ 37 ” N, 110 ° 04 ’ 35 ” W), June 9, 2001, 1 M, MN, from surface to 1390 m (TD, 2400 m) (ECO-CH-Z- 10395). TALUD X. St. 11 (27 ° 34 ’ 16 ” N, 111 ° 40 ’ W), February 11, 2007, 2 M, MN, from surface to 1215 m (TD, 1801 m) (ICML-EMU- 12809 A). TALUD XI. St. 19 B (17 ° 56 ’ 00 ” N, 103 ° 10 ’ 00 ” W), June 9, 2007, 1 M, MN, from surface to 1490 m (TD, 1750 m) (ICML-EMU- 12809 B).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514EBF33FF0FDC24FB480D43.taxon	distribution	Distribution. Pacific Ocean. In the eastern Pacific from off San Diego, USA, throughout the Gulf of California, Mexico, to off Panama and the Galapagos Islands (Siegel-Causey 1892, Vinogradov et al. 1996, Brusca & Hendrickx 2005, García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514EBF33FF0FDC24FB480D43.taxon	discussion	Remarks. Siegel-Causey (1982) reported this species as the third most abundant species in the Gulf of California where it was found from the upper to the southern Gulf. Occasionally to> 560 m depth (Siegel-Causey 1982); from 0 to 200 m depth (Vinogradov et al. 1996, García Madrigal 2007). This species has been reported among the most abundant in the Mexican tropical Pacific area during ENSO conditions (Gasca et al. 2012).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF33FF0FD89EFAEE0A9F.taxon	materials_examined	Material examined. 12 M, 4 F, in 7 localities (Fig. 7). TALUD III, St. 19 (25 ° 12 ’ 00 ” N, 109 ° 07 ’ 00 ” W), August 20, 1991, 1 M, 2 F, I-K, surface to 410 m (TD, 920 m) (ICML-EMU- 12808 A); St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 M, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12808 B). TALUD IV. St. 15 (23 ° 23 ’ 30 ” N, 107 ° 47 ’ 48 ” W), August 24, 2000, 1 F, MN, from surface to 1500 m (TD, 2350 m) (ECO-CH-Z- 10396). TALUD V. St. 29 (25 ° 14 ’ 36 ” N, 109 ° 24 ’ 15 ” W), December 17, 2000, 1 M, MN, from surface to 1290 m (TD, 2040 m) (ICML-EMU- 12809). TALUD XI. St. 6 A (16 ° 58 ’ 00 ” N, 100 ° 57 ’ 00 ” W), June 7, 2007, 4 M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU- 12810 A); St. 19 B (17 ° 56 ’ 00 ” N, 103 ° 10 ’ 00 ” W), June 9, 2007, 2 M and 1 F, MN, from surface to 1490 m (TD, 1750 m) (ICML-EMU- 12810 B). TALUD XII. St. 4 (16 ° 59 ’ 39 ” N, 100 ° 58 ’ 07 ” W), March 28, 2008, 3 M, MN, from surface to 1200 m (TD, 1995 m) (ECO-CH-Z- 20397).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF33FF0FD89EFAEE0A9F.taxon	distribution	Distribution. Indian and Pacific Oceans (Vinogradov et al. 1996). In the eastern Pacific from British Colombia, Canada, to the southern tip of the Baja California Peninsula, Mexico (García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF33FF0FD89EFAEE0A9F.taxon	discussion	Remarks. Phronimopsis spinifera has been reported by Siegel-Causey (1982) in the central and southern Gulf of California, occasionally abundant but little frequent. Recorded between surface and to 300 – 500 m depth (Vinogradov et al. 1996, García Madrigal 1982). Related to the California Current system (Bowman 1973, Lavaniegos 2014).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF33FF0FDC3AFECE090F.taxon	description	monotypic genus	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF34FF0FDCAEFEA70EAF.taxon	materials_examined	Material examined. 2 F, in two localities (Fig. 7). TALUD III. St. 19 B (25 ° 18 ’ 24 ” N, 109 ° 18 ’ 36 ” W), August 20, 1991, 1 F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU- 12811). TALUD VII. St. 36 (25 ° 42 ’ 37 ” N, 110 ° 04 ’ 35 ” W), June 9, 2001, 1 F, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU- 12812).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF34FF0FDCAEFEA70EAF.taxon	distribution	Distribution. Atlantic, Pacific, and Indian oceans. In the eastern Pacific from off Baja California, Gulf of California, and south to off Guatemala and Nicaragua (García Madrigal 2007).	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
EC62878D514FBF34FF0FDCAEFEA70EAF.taxon	discussion	Remarks. A commonly collected species in the central and southern Gulf of California, T. fusca has mostly been found in epipelagic layers (Siegel-Causey 1982). Also found in the Mexican tropical Pacific (Gasca et al. 2012). Only two female specimens were found. Specimens measured about 2.5 mm in length. Five thoracic segments are fused; fourth segment partially free dorsally. Dactyli of pereopods VI and VII distinctively bent upwards. Telson small and rounded. There are only two other lestrigonids known to have five thoracic segments fused: L. bengalensis (male juveniles) and L. ducrayi Zeidler, 1992 which has a proportionally longer telson and a shorter pereopod 2 carpal process.	en	Gasca, Rebeca, Hendrickx, Michel E. (2021): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae. Zootaxa 4974 (1): 169-187, DOI: https://doi.org/10.11646/zootaxa.4974.1.8
