taxonID	type	description	language	source
03C66077FFB03E3183D8FE0FFC98FA0A.taxon	type_taxon	Type species: Cryptotendipes lenzi Zorina, 2001. Other included species: Olecryptotendipes arienus Yan et Wang, 2017, Olecryptotendipes exilis Yan, Wang et Bu, 2012, Olecryptotendipes extentus Mukherjee et Hazra, 2022, Olecryptotendipes macropodus (Lyakhov, 1941), Olecryptotendipes melasmus Yan, Wang et Bu, 2012, Olecryptotendipes obtunsus Mukherjee et Hazra, 2022, Olecryptotendipes secundus (Zorina, 2003), and Harnischia complex genus C sp. Epler, 1995.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3183D8FE0FFC98FA0A.taxon	diagnosis	Diagnosis. The following combination of characters will separate the genus Olecryptotendipes Zorina from other members of the Harnischia complex: Male: frontal tubercles absent; thorax and legs with or without spots; AR 1.13 – 2.24; acrostichals present, sometimes absent; squama with 0 – 5 setae; hypopygium with Y-type band, rarely separated medially; posterior part of tergite IX elongated with setae, sometimes with caudolateral shoulders; superior volsella with sclerotised part and membranous ridge, with 1 – 2 dorsal and 1 ventral setae, microtrichia absent or present; inferior volsella absent or reduced; gonostylus curved medially or in distal third. Pupa with well developed frontal tubercles; frontal setae present or reduced to short rod-shaped outgrowths apically serrated; thoracic horn plumose; hook row widely interrupted medially; pedes spurii B present on segment I anteriorly; pedes spurii B absent on tergite II; sternites IV with pedes spurii A; tergites II – V with rectangular patches of shagreen or tergites II – VI or I – VI a median longitudinal band of spines; posterolateral comb or spur absent. Larval body consisting of 20 apparent segments; anterior parapods with large claws; posterior parapods thin and elongated; antenna with 6 segments; pecten epipharyngis a simple scale with median notch apically or a triangular serrated scale or consists of 3 scales, median one slightly longer than lateral ones; premandible with 2 apical and 1 – 2 teeth in base, brush absent; mandible with sickle-shaped dorsal tooth, apical tooth and 2 – 3 inner teeth; seta interna present (with 4 – 6 simple branches) or absent; mentum with pale triangular median tooth and 6 – 7 pairs of yellowish brown lateral teeth or 2 median teeth and 5 pairs lateral teeth.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3883D8F9FAFDB7FCAA.taxon	description	Figs. 1 – 29.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3883D8F9FAFDB7FCAA.taxon	materials_examined	Material examined. Male, Russia, SAKHALIN ISLAND, Rybnoe Lake near Nogliki Village, 27. vii. 2002 (E. Makarchenko) (Holotype); males, KHABAROVSK TERRITORY, Sunny region, Amur River basin, spring, near the city of Amursk, 12. vi. 2010 (leg. I. Tiunov); pupa with larval exuviae, same data, Amur River near the village of Nizhneleninskoye, 01. vi. 2018 (leg. S. Kulbachny); pupa, N 48 ⁰ 44.827 ’ E 135 ⁰ 26.607 ’, same data, the Amur River below the city of Khabarovsk and above the Noevskaya channel, 05. vi. 2018 (leg. O. Kudrevsky); 2 pupae, N 48 ⁰ 44.894 ’ E 135 ⁰ 26.669 ’, same data, the Amur River below the city of Khabarovsk, 06. vi. 2019 (leg. S. Kulbachny); larva, AMUR REGION, mouth of the Selemdzha River, 19. ix. 2008 (leg. T. Tiunova).	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3883D8F9FAFDB7FCAA.taxon	description	Description Male imago (n = 3). General colour yellowish. Total length 3.5 – 4.7 mm; total length / wing length 1.89 – 3.26. Head (Fig. 1). Frontal tubercles absent. Temporal setae 11 – 16. Clypeus with 6 – 10 setae. Maxillary palp brown, lengths of last 4 palpal segments (µm): 33 – 55, 81 – 121, 90 – 132, 132 – 165. Palp length / head width 0.78. Scapus yellowish brown, flagellomeres (1 – 11) dark-brown, 880 – 1210 µm long. AR 1.75 – 1.89. Antenna length / palp length 2.49 – 2.62. Thorax. Ground colour of scutum pale yellow, mesonotal strips yellow. Aps 0 – 1, Ac 0, Dc 5 – 7, Pa 2 – 4, Su 1 – 2. Scutellum pale yellow, with 6 – 8 setae. Postnotum in distal 2 / 3 dark brown. Wings. Wing length 1.44 – 1.85 mm. Squama with 1 – 5 setae. R, R 1 without setae, R 4 + 5 with 2 apical setae. VR 1.11. Haltere pale yellow. Legs (Table 1). Legs pale yellow, with exception of distal end of Fe 1, proximal 1 / 3 and distal end of Ti 1 (sometimes all Ti), distal 1 / 3 or 2 / 3 of Ta 1, Ta 2 – 5 brown. Р 2 and Р 3 yellowish, with exception of brown Ta 5. Terminal combs of Ti 2 and Ti 3 with 15 – 18 µm long spurs. BR 1 2.5 – 3.2, BR 2 3.3 – 4.3, BR 3 3.0 – 3.6. Abdomen. Pale yellow. Hypopygium (Figs. 2 – 6). Anal tergite bands Y-type. Anal point 54 – 63 µm long, wide at about apical 1 / 3 (9 – 12 µm), apically rounded. Anterior margin of tergite IX with caudolateral shoulders bearing 4 – 5 setae. Gonocoxite 90 – 105 µm long. Inner margin of gonocoxite with 5 – 6 setae. Width of transverse sternapodeme 45 μm. Phallapodeme 60 μm long. Superior volsella 51 – 60 µm long, without microtrichia, bearing usually apical dorsal seta (length 21 – 24 µm) and ventral seta (length 24 – 30 µm) on preapical lobe (Fig. 2). Gonostylus 120 – 135 µm long, curved medially, with 4 – 5 setae in apical part and 1 short apical seta. HR 0.75 – 0.78. Female. Unknown. Pupa (n = 4) Cephalothorax. Length of thorax 0.90 – 0.90 mm. Frontal tubercles 30 – 36 µm high, 81 – 90 µm wide, with short, 9 – 15 µm long, rod-shaped, apically serrated outgrowths (Figs 7, 13). Thorax granulose along median suture (Fig. 8). Thoracic horn plumose; basal ring oval, 30 µm long, 24 µm wide. Antepronotal 1 (median, 90 – 105 µm long). Precorneals 2 – 3 (length 60, 45, 75 µm). DC 1 strong, sometimes split, 30 – 45 µm long, DC 2 hairy, 45 – 90 µm long, DC 3 hairy, 45 – 60 µm long, DC 4 strong, 30 – 45 µm long. Distance between DC 1 and DC 2 54 – 90 µm, DC 3 and DC 4 6 – 15 µm, DC 2 and DC 3 63 – 96 µm. Wing sheath 900 µm long, 220 µm wide. Prealar tubercle present. Abdomen (Figs 9 – 12, 14 – 16) 2.4 – 2.8 mm long. Hook rows divided into two parts, each part with 12 – 17 hooks, 64 – 80 µm wide, distance between hook rows 40 µm. Tergites I – III with mesh structure. Tergites I – VI with a median longitudinal band of spines. Tergite I: length of stripe 64 µm, with ~ 15 spines; tergite II: length of stripe 96 – 144 µm, with 30 – 45 spines; tergite III: length of stripe 136 – 240 µm, with 42 – 65 spines; tergite IV: length of stripe 224 – 264 µm, with 82 – 100 spines; tergite V: length of stripe 240 – 256 µm, with 80 – 85 spines; tergite VI: length of stripe 240 – 264 µm, with 65 – 105 spines. Tergites VII – VIII with two lateral bands of spines. Pedes spurii B present on segment I and absent on segment II; pedes spurii A well-developed on sternite IV. Sternites I – IV with shagreen. Laterosternites IV – VII with spines posterolaterally. Segment VIII without posterolateral comb or spur. Segment I with 1 L seta, II – IV with 3 L setae, V – VIII with 4 LS setae. Anal lobe well-developed with complete fringe of 44 – 53 taeniae in a single row, with 1 – 2 dorsal setae. Anal segment 224 – 256 µm long and 176 – 224 µm wide. Fourth instar larva (n = 3) Coloration white (in alcohol), with yellowish head capsule. Head capsule 1.41 mm long, 1.10 mm wide, cephalic index (W / L) 0.78. Head (Figs 17 – 22, 25 – 29). Posterior part of head capsule dorsally convex with several rounded small pits. Setae on dorsal surface: S 7 plumose, S 9 two-branched. Antenna (Figs 21, 26). Six segmented, total length 81 – 101 µm, length of each segment (in µm): 30 – 36; 18 – 24; 21 – 27; 3; 4.5 – 9; 6. AR 0.56 – 0.59. Basal segment with ring organ at 12 – 15 µm from base. Blade 36 µm long, situated medially on second segment, extending to apex of fourth segment. Lauterborn organ 6 µm long, at apex of third segment, reaching apex of fifth segment. Labrum (Figs 19, 25). S I 21 – 27 µm long, blade-like; S II 18 µm, slender and simple; S III 12 – 15 µm, short, and simple; S IV 56 – 71 µm long, 3 - segmented (length of each segment (in µm): 15 – 23, 24 – 30, 14 – 18). Pecten epipharyngis consists of 3 scales, median one slightly longer than lateral ones. Premandible 45 – 54 µm long, with 2 large apical and 2 small basal teeth; brush absent. Mandible (Figs 20, 27) 60 – 75 µm long, 18 – 24 µm wide, with an apical (15 – 18 µm long) and two inner teeth and a blade-like dorsal tooth (21 µm long). Seta subdentalis 18 µm long. Pecten mandibularis with 6 branches. Seta interna absent. Maxillary palp (Figs 22, 28). Basal segment 21 – 24 µm long, ring organ located near base, with two 2 - segmented (24 and 9 – 12 µm long, respectively) and one simple (21 µm long) sensillae. Mentum (Figs 22, 29) 33 – 45 µm wide; 2 median teeth and 5 pairs lateral teeth. Ventromental plate 27 – 30 µm wide, 24 – 30 µm long. Abdomen. Anterior parapods large, with large claws (Fig. 23). Posterior parapods 328 – 344 µm long, with 10 simple hooks (Fig. 24). Procercus 30 µm high, 21 µm wide. Anal tubules 104 µm long.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3883D8F9FAFDB7FCAA.taxon	discussion	Remarks. The male of O. secundus (Zorina) can be distinguished from all known species of the genus by having a superior volsella without microtrichia and bearing apical and ventral setae, and by the absence of acrostichals and setae on both R and R 1. The pupa is well distinguished by the presence of rod-shaped outgrowths on the frontal tubercles and longitudinally located shagreen in the form of stripes on the tergites I – VI. Collected pupae are similar to Chironomini gen.? sp.? Pe 5 Langton & Visser (2003, Fig. 149 b) with respect to location of shagreen on tergites II – IV, medially interrupted band of hook-shaped spines, number of setae on segments V – VIII and absence of caudolateral spur, but differ from the latter in the above features. The larva of O. secundus (Zorina) is similar to the larvae of O. lenzi (Zorina) and Harnischia complex genus C sp. Epler, but differs from the latter in the following features: AR 0.56 – 0.59, S IV 3 - segmented (2 nd and 3 rd segments about the same length), premandible with 2 large apical and 2 small basal teeth. Mandible with 2 inner teeth, seta interna absent. Maxillary palp with two 2 - segmented and one simple sensillae apically. Mentum with 12 pale teeth, 2 median teeth and 5 pairs lateral teeth. The larvae of O. secundus (Zorina), which we found in the Amur River basin, are very similar in structure of the body and head capsule to Cryptochironomus macropodus Lyakhov, that was described from the Volga River basin. Despite the rather detailed description and figure of the larva C. macropodus given by Pankratova (1983), we cannot reliably say that this is one and the same species. At present, it is not possible to carry out a comparative morphometric analysis of the larvae found by us with the type specimens of C. macropodus.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
03C66077FFB03E3883D8F9FAFDB7FCAA.taxon	distribution	Distribution. The species is known from Amur River basin and Sakhalin Island, Russian Far East. The larvae live on sandy-pebbly soils of large rivers.	en	Orel, Oksana V. (2022): Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae). Zootaxa 5205 (1): 87-96, DOI: https://doi.org/10.11646/zootaxa.5205.1.6
