taxonID	type	description	language	source
7C4D1C27FFC4BF78B4D0FB88FBABF8A0.taxon	description	GenBank Accession No. ON 898600	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC4BF78B4D0FB88FBABF8A0.taxon	materials_examined	Material examined. Holotype male, labelled ‘ Holotype Demicryptochironomus (Demicryptochironomus) praeacutus sp. n., India, Assam, Kohora [26.15 ° N, 91.79 ° E], 16. iv. 2022, Coll. B. Khan’. Paratypes 2 males, same data as holotype, labelled ‘ Paratype Demicryptochironomus (Demicryptochironomus) praeacutus sp. n. Paratype 1 male, labelled ‘ Demicryptochironomus (Demicryptochironomus) praeacutus sp. n., India, West Bengal, Burdwan [23.2441319 ° N, 87.8368799 ° E], 17. ix. 2019, Coll. B. Mukherjee’. Paratype 1 male, labelled ‘ Demicryptochironomus (Demicryptochironomus) praeacutus sp. n., India, West Bengal, Burdwan [23.2393 ° N, 87.8512 ° E], 14. x. 2019, Coll. B. Mukherjee’. Paratypes 4 males, labelled ‘ Demicryptochironomus (Demicryptochironomus) praeacutus sp. n., India, West Bengal, Burdwan [23.2393 ° N, 87.8512 ° E], 16. vii. 2020 & 10. i. 2021, Coll. N. Hazra’. Diagnostic characters. The adult male is distinguished from other species of the genus Demicryptochironomus by the presence of tapered gonostylus with pointed apex and bilobed or trilobed superior volsella having clubbed apical end.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC4BF78B4D0FB88FBABF8A0.taxon	etymology	Etymology. The name “ praeacutus ’’, a Latin word, refers to the sharply pointed gonostylus at apex. Male (n = 9) Total length 2.8 – 3.2, 3 mm. Wing length 1.65 – 1.7, 1.675 mm. Costal length 1.57 – 1.62, 1.59 mm. Antennal length 0.88 – 0.91, 0.895 mm. Colouration. Thorax yellowish brown, leg colour light brown, abdomen yellow to light brown. Head. Head width 570 – 580, 575 µm. Temporal setae 7 – 11 (IV 2, OV 5 – 6, Po 0 – 2). Clypeal setae 12 – 15. Frontal tubercles present, 6.9 µm long. Eyes bare with dorsomedial extension of 119 – 130, 124.5 µm. Ultimate flagellomere 570 – 590, 580 µm long; AR 1.7 – 1.93, 1.82. Length of palpomeres (I – V) (µm): 25 – 27.6: 30: 94 – 97.5: 134.6 – 138: 165.6. CA 0.64 – 0.66, 0.65. Thorax. Acrostichals 10 – 12, dorsocentrals 24, prealars 3, supraalars 2 and scutellars 9 – 10. Wing (Fig. 1 A). VR 1.10 – 1.11. R with 36 setae, R 4 + 5 with 26 setae. Brachiolum with 2 setae. Squama with 6 fringed setae. FCu distinctly distal to RM. Anal lobe moderately developed. Legs. Fore tibia with 2 – 3 setae. Mid legs with 2 tibial spurs; 18.4 – 20.7 µm and 23 µm long, comb with 28 – 36 teeth. Hind leg with 2 tibial spurs; 25.3 µm and 27.6 – 29.9 µm long, comb with 50 – 52 teeth. Lengths (µm) and proportions of legs shown in table 1. Hypopygium (Figs. 1 B – D). Anal tergite band V shaped. Anal point slender, parallel sided; 46 – 48, 47 µm long, 6.9 µm wide. Anal point bearing 2 – 3 lateral setae on each side. Tergite IX with 16 – 18 setae. Transverse sternapodeme 64.5 – 69, 66.75 µm long. Superior volsella (Fig. 1 D) nearly bilobed or trilobed, apically pommel in shape, bearing 3 long setae and microtrichia; 46 µm long and 11.5 µm wide at apex. Inferior volsella absent. Gonocoxite 115 – 119, 117 µm long. Gonostylus 126.5 – 131, 128.75 µm long, tapered apically with pointed apex. HR 0.91 – 0.94, 0.925; HV 2.4 – 2.7, 2.55.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC4BF78B4D0FB88FBABF8A0.taxon	distribution	Distribution (Fig. 2). West Bengal and Assam, India (present record).	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC4BF78B4D0FB88FBABF8A0.taxon	discussion	Remarks. Characters such as V shaped anal tergite band, absence of inferior volsella, bilobed or trilobed superior volsella and presence of frontal tubercles assert the positioning of this new species in Demicryptochironomus (Demicryptochironomus). Parallel sided anal point without ridge present in both the new species and D. (D). zairensis Lehman, 1979 but they differ in the shape of superior volsella and gonostylus.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC2BF7BB4D0F8C1FCF8FE79.taxon	description	GenBank Accession No. ON 881144	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC2BF7BB4D0F8C1FCF8FE79.taxon	materials_examined	Material examined. Holotype male, labelled ‘ Holotype Demicryptochironomus (Irmakia) dividuus sp. n., India, West Bengal, Darjeeling [26.7095 ° N, 88.3542 ° E], 04. ix. 2021, Coll. G. Pal’. Paratype 1 male, labelled ‘ Paratype Demicryptochironomus (Irmakia) dividuus sp. n., India, West Bengal, Burdwan [23.2393 ° N, 87.8512 ° E], 26. ii. 2021, Coll. N. Hazra’. Diagnostic characters. The species can be separated from other species of the genus Demicryptochironomus (Irmakia) by the following combinations of features: partially divided superior volsella at apex, and apically pointed gonostylus with strong concavity.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC2BF7BB4D0F8C1FCF8FE79.taxon	etymology	Etymology. The name “ dividuus ’’, a Latin word, refers to the partly divided superior volsella at apex. Male (n = 2) Total length 2.4 – 3, 2.7 mm. Wing length 1.85 – 1.87 mm. Costal length 1.78 mm. Antennal length 0.8 mm. Colouration. Thorax yellowish brown, leg colour light brown, abdomen yellow to light brown. Head. Head width 500 – 540 µm. Temporal setae 8 – 10 (IV 1, OV 6 – 7, Po 0 – 2). Clypeal setae 9 – 10. Frontal tubercles present, 4.6 – 5 µm long. Eyes bare with dorsomedial extension of 115 – 130 µm. Ultimate flagellomere 490 µm long; AR 1.58. Length of palpomeres (I – V) (µm): 23: 46: 92: 105: 149. CA 0.63 – 0.68. Thorax. Acrostichals 4, dorsocentrals 12 – 14, prealars 3, supraalars 1 – 2 and scutellars 6 – 8. Wing (Fig. 3 A). VR 1.14. R with 17 setae, R 4 + 5 with 18 setae. Brachiolum with 2 setae. Squama with 4 fringed setae. FCu distinctly distal to RM. Anal lobe moderately developed. Legs. Fore tibia with 2 – 3 setae. Mid legs with 2 tibial spurs; 16 – 18.4 and 20.7 µm long, comb with 36 – 40 teeth. Hind leg with 2 tibial spurs; 23 µm and 25.3 µm long, comb with 48 – 50 teeth. Lengths (µm) and proportions of legs shown in table 2. Hypopygium (Figs. 3 B – D). Anal tergite band Y shaped. Anal point 76 – 80.5 µm long, 9.2 – 11.5 µm wide, slightly widened sub apically, apically rounded, bearing 3 – 4 lateral setae on each side. Transverse sternapodeme 23 – 30 µm long. Digitiform superior volsella 18.34 – 20.7 µm long, 6.9 – 9.2 µm wide (Fig. 3 D), partially bifurcated apex bearing 2 setae. Inferior volsella absent. Gonocoxite 138 µm long. Gonostylus 156 – 166 µm long, widest medially, apically pointed and strongly curved in middle with strong longitudinal keel. HR 0.84 – 0.88; HV 2.17.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC2BF7BB4D0F8C1FCF8FE79.taxon	distribution	Distribution (Fig. 4). West Bengal, India (present record).	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
7C4D1C27FFC2BF7BB4D0F8C1FCF8FE79.taxon	discussion	Remarks. The new species shows closeness with D. (I). concavus Yan, Tang et Wang, 2005 in having somewhat similar shaped gonostylus but differs in the shape of superior volsella. Small thumb – like superior volsella is possessed by the new species and D. (I). fastigatus (Townes, 1945), but superior volsella is apically bisected in the new species while it is undivided apically in the latter species.	en	Mukherjee, Bindarika, Hazra, Niladri (2022): Two new species of Demicryptochironomus Lenz, 1941 from India with tentative phylogenetic relationship and a revised world key to known males (Diptera: Chironomidae). Zootaxa 5175 (1): 88-100, DOI: https://doi.org/10.11646/zootaxa.5175.1.4
