10. Diochus conicollis (Motschulsky, 1858)

(Fig 1F)

Rhegmatocerus conicollis Motschulsky, 1858: 658 (Type locality: Indes orientales).

Diochus conicollis; Gemminger and Harold, 1868: 608 (catalog); Bernhauer, 1902: 32 (Ceylon); Bernhauer and Schubert, 1914: 319 (catalog); Bernhauer, 1922: 231 (Formosa); Cameron, 1932: 45 (Ceylon; India); Scheerpeltz, 1933: 1324 (catalog); Shibata, 1973: 131 (Taiwan); Coiffait, 1977: 206 (Bhutan); Coiffait, 1981: 329 (Andaman Islands; misidentification); Coiffait, 1982: 27 (Nepal); Herman, 2001: 2445 (catalog); Smetana, 2004: 624 (Hongkong, Taiwan; Nepal, India, Bhutan); Löbl & Löbl, 2015: 1007 (Palaearctic catalog; Hongkong, Taiwan; Nepal, India, Bhutan); Zhou and Zhou, 2016: 22 (lectotype designation, redescription); Huang, Janák, and Zhou, 2024c: 529 (Thailand; Myanmar).

Syn.: Diochus major Kraatz, 1859: 113 (Type locality: India orientalis; Ceylan); Bernhauer, 1902: 32 (synonym of D. conicollis); Bernhauer and Schubert, 1914: 319 (synonym of D. conicollis); Cameron, 1932: 46 (synonym of D. conicollis); Smetana, 2004: 624 (synonym of D. conicollis); Löbl & Löbl, 2015: 1007 (Palaearctic catalog; synonym of D. conicollis).

Material examined. MYANMAR: env. Maymyo: 1 male, 12–13. 02. 1996, 700–900 m, Kurbatov (MHNG) . THAILAND: 4 males, 4 females, W. THAILAND: 300 m, Thung Yai Wildlife Sanctuary, 15°28'N – 94°48'E, Tak Province, Umphang District, Song Bae Stream, 18.-27.iv.1988, Evergreen rain forest, M.J.D. Brendell, B.M. 1988–183, Flight interception trap (NHMUK, JJRC) ; 1 male, Chiang Mai, Doi Suthep National Park, Mok Fa waterfall, leaf litter, 8.11.2019, leg. Kleeberg (AKBG) ; 1 female, Soppong, 19.29N, 18.18E, 13.5.1993, 750 m, L. Bocák lgt. (SMNS) ; 1 male, Khao Yai National Park, Haek Naew Falls, 19.XI.2004, Rossi (VAHG) ; 1 female, river 24 km from Chiang Mai, road to Chiang Rai, 27.XI.2004, leg. W. Rossi (VAHG); 1 female, Inthanon, Wachiratran waterfall, 18°32'N, 98°31'E, 700 m, stream, 18.II.2014, leg. Ob (VAHG) .

Diagnosis. In this species, posterior margin of male sternite VIII is widely and shallowly emarginate, and with numerous dark coarse setae on the posterior margin, which are similar only to that of D. japonicus Cameron, 1930 . The setae on lateral parts of male sternite VIII in D. conicollis is much denser than that in D. japonicus .

Distribution. Confirmed records are only from Myanmar, Sri Lanka (Ceylon) and Thailand. Published records from other countries (India, Nepal, Bhutan, China (Hong Kong, Taiwan)) have to be verified.