Coriophagus chaudhuri sp. n. (Strepsiptera: Halictophagidae: Coriophaginae): a male strepsipteran from Jharkhand, India with a tentative phylogeny and world key to known males Author Hui, Poulami 0000-0003-1455-7427 Entomology Research Unit, Department of Zoology, The University of Burdwan, Burdwan, India & moupou 1997 @ gmail. com; https: // orcid. org / 0000 - 0003 - 1455 - 7427 moupou1997@gmail.com Author Mukherjee, Bindarika 0000-0002-9792-7931 Entomology Research Unit, Department of Zoology, The University of Burdwan, Burdwan, India & bindabdn @ gmail. com; https: // orcid. org / 0000 - 0002 - 9792 - 7931 bindabdn@gmail.com Author Hazra, Niladri Entomology Research Unit, Department of Zoology, The University of Burdwan, Burdwan, India text Zootaxa 2023 2023-09-18 5346 2 131 150 http://dx.doi.org/10.11646/zootaxa.5346.2.2 journal article 268165 10.11646/zootaxa.5346.2.2 2ed2b685-8713-4365-ad04-994f78f42b4c 1175-5326 8354494 6165D835-38DA-45CE-B6F4-57DF10402720 A world key to the species of the genus Coriophagus Kinzelbach, 1971 (Male) 1. Total length less than 2.5 mm ........................................................................... 2 - Total length greater than 2.5 mm ......................................................................... 6 2(1). Posterior margin of postlumbium straight ( Fig. 7 )...... Coriophagus monteithi Kathirithamby, 1992 (Australasia: Australia ) FIGURE 7. Metathorax of Coriophagus monteithi Kathirithamby, 1992 . - Posterior margin of postlumbium sinuate................................................................... 3 3(2). Detached vein R 2 slender, longer than R 3 ( Fig. 8 )...................................................................................................... Coriophagus maai Kifune & Hirashima, 1989 (Australasia: New Guinea ) - Detached vein R 2 broad, shorter than R 3 vein............................................................... 4 4(3). Detached vein R 3 touching R 4 vein ( Fig. 4 )............................. Coriophagus chaudhuri sp. n. (Orient: India ) - Detached vein R 3 not touching R 4 vein..................................................................... 5 5(4). Detached vein R 2 ( Fig. 9 ) meets anterolateral margin of hind wing....................................................................................................... Coriophagus jennyae Kogan, 2012 (Neotropics: Brazil ) - Detached vein R 2 ( Fig. 10 ) does not meet anterolateral margin of hind wing.......................................................................................... Coriophagus casui Cowley, 1984 (Australasia: New Zealand ) FIGURE 8. Body and left hind wing of Coriophagus maai Kifune & Hirashima, 1989 . FIGURE 9. Coriophagus jennyae Kogan, 2012 . 6(1). Apex of maxillary palp pointed.......................................................................... 7 - Apex of maxillary palp blunt............................................................................ 8 7(6). Flabellum of antennomere III broader than rest of flabella ( Fig. 11 )................................................................................................ Coriophagus adebratti Kathirithamby, 1993 (Orient: Malaysia ) - Flabellum of antennomere III as broad as rest of flabella ( Fig. 12 )............................................................................................ Coriophagus medleri Luna de Carvalho, 1972b (Afrotopics: Nigeria ) 8(6). Number of ommatidia in each eye 25 or less................................................................ 9 - Number of ommatidia in each eye greater than 25........................................................... 13 9(8). Mandibles shorter than maxillae........................................................................ 10 - Mandibles longer than maxillae......................................................................... 11 10(9). Total length less than 3.00 mm; eyes with around 15 ommatidia; R 2 vein broader than R 3 vein; length of dorsal hook of aedeagus greater than that of ventral prong ( Fig. 13 )............... Coriophagus zanzibarae ( Bohart, 1962 ) (Afrotropics: Tanzania ) - Total length greater than 3.00 mm; eyes with around 22 ommatidia; R 2 vein as broad as R 3 vein; length of dorsal hook of aedeagus shorter than that of ventral prong ( Fig. 14 )........... Coriophagus hansoni Cook, 2019 (Neotropics: Costa Rica ) 11(9). Total length less than 3.00 mm; number of ommatidia less than 20 per eye; R 2 vein 1/3rd length of R 3 ; posterior margin of poslumbium sinuate ( Fig. 15 )............................. Coriophagus calcaneus Roy & Hazra, 2016 (Orient: India ) FIGURE 10. Coriophagus casui Cowley, 1984 . FIGURE 11. Antenna of Coriophagus adebratti Kathirithamby, 1993 . - Total length greater than 3.00 mm; number of ommatidia greater than 20 per eye; length of R 2 vein greater than 1/3rd of R 3 vein; posterior margin of postlumbium straight................................................................. 12 12(11). Eyes with around 25 ommatidia; postnotum with pointed tip ( Fig.16 ); R 2 vein half as long as R 3 ....................................................................... Coriophagus borneoensis Kathirithamby, 1993 (Orient: Malaysia ) - Eyes with around 20 ommatidia; postnotum with rounded tip ( Fig.17 ); R 2 vein 2/3rd length of R 3; tip of postnotum rounded................................. Coriophagus gressittorum Kifune & Hirashima, 1989 (Australasia: Solomon Islands ) 13(8). Total length greater than 4.00 mm; prescutum straight; postnotum with rounded tip ( Fig.18 )............................................................................... Coriophagus rieki Kinzelbach, 1971 (Australasia: Australia ) FIGURE 12. Antenna of Coriophagus medleri Luna de Carvalho, 1972 . FIGURE 13. Coriophagus zanzibarae ( Bohart, 1962 ) : Habitus (top), aedeagus (bottom). FIGURE 14. Coriophagus hansoni Cook, 2019 : Habitus (top), aedeagus (bottom). FIGURE 15. Coriophagus calcaneus Roy & Hazra, 2016 : Hindwing (left), Metathorax (right). FIGURE 16. Head and thorax of Coriophagus borneoensis Kathirithamby, 1993 . FIGURE 17. Coriophagus gressittorum Kifune & Hirashima, 1989 . FIGURE 18. Dorsal view of the thorax of Coriophagus rieki Kinzelbach, 1971 . FIGURE 19. Metathorax of Coriophagus lockerbiensis Kathirithamby, 1992 . - Total length less than 4.00 mm; prescutum sinuate; postnotum with pointed tip................................... 14 14(13). Eyes with around 50 ommatidia; anterior part of scutellum pointed; postlumbium moderately narrow at middle ( Fig. 19 ).............................................. Coriophagus lockerbiensis Kathirithamby, 1992 (Australasia: Australia ) - Eyes with around 40 ommatidia; anterior part of scutellum rounded; postlumbium uniformly very narrow ( Fig. 20 )................................................... Coriophagus latimanus Luna de Carvalho, 1972a (Afrotropics: Angola )