9. Diochus antennatus (Motschulsky, 1858)

(Fig 1J)

Rhegmatocerus antennatus Motschulsky, 1858: 659 (Type locality: Indes orientales).

Diochus antennatus; Gemminger and Harold, 1868: 608 (catalog); Bernhauer and Schubert, 1914:319 (catalog); Bernhauer, 1922: 231 (Formosa); Bernhauer, 1928: 15 (Sumatra); Cameron, 1932: 46 (characters; Penang; Malay Peninsula); Scheerpeltz, 1933: 1323 (catalog; Malay-Halbinsel, Formosa, Neu Guinea); Cameron, 1934: 79 (type examined); Cameron, 1937: 4 (Java); Shibata, 1973: 130 (Taiwan); Coiffait, 1982: 27 (characters; Nepal); Herman, 2001: 2444 (catalog); Smetana, 2004: 624 (Taiwan; Nepal); Zhou and Zhou, 2016: 20 (characters); Huang, Janák and Zhou, 2024c: 537 (type examined, Thailand; Myanmar; Malaysia).

Syn.: Diochus indicus Kraatz, 1859: 113 (Type locality: India orientalis); Bernhauer and Schubert, 1914: 319 (synonym of D. antennatus); Cameron, 1931: 360 (New Guinea); Cameron, 1932: 46 (synonym of D. antennatus); Smetana, 2004: 624 (synonym of D. antennatus); Löbl & Löbl, 2015: 1007 (Palaearctic catalog; synonym of D. antennatus).

Material examined. MYANMAR: Shan Prov.: 1 male, 2 females, Hsipaw, ca. 600 m, 22. 02. 96, litter, leg. S. Kurbatov (MHNG) ; 1 male: “ Birmanie, Helfer ”, “ Darjeeling, Sikkim ”, “indicus Kr. type ”, “punctipennis Mots., indicus Kr. ”, “Ex-Typis” (IRSNB-coll. Fauvel). THAILAND: Chanthaburi : 8 males, 3 females, Khao Sabap Nat. Park, 150–300 m, 23–24. XI. 1985, Burckhardt-Löbl (MHNG) ; 3 males, NE Bangkok, Khao Yai Nat. Park, Khao Khieo, 1150 m, 28. XI. 1985, Burckhardt-Löbl (MHNG) ; 1 male, 2 females, Khlong Nakha Wildlife Sanctuary, Kapoe Dist., 30 m, 29. 1. 1991, P. Schwendinger (MHNG) ; 1 male, 4 specimens, sex indet., Chiang Mai, Doi Suthep National Park, Nov. 2019, Mok Fa waterfall, leaf litter, 08.11.2019, leg. Kleeberg (AKBC, JJRC) ; 2 males, 1 female, Khao Lak N.P., Thone Chong Fa Fall, 100–300 m, 6.-15. I. 1998, leg. A. Schultz & K. Vock (SMNS, JJRC) . MALAYSIA: 1 male, 1 female, Penang, Dr. Cameron (NHML) .

Diagnosis. This species is externally similar to D. lombokensis sp. nov., D. bogorensis sp. nov. and D. punctipennis . This species has shorter antennae, and first segments of protarsi strongly dilated, distinguishing it from D. punctipennis . Compared to D. lombokensis sp. nov. and D. bogorensis sp. nov., this species only has a shallow emargination on posterior margin of male sternite VIII, and the aedeagus of this species has parameres distinctly longer.

Distribution. Myanmar, Thailand, Malaysia. Published records from other regions of Indonesia (Sumatra, Java, Kalimantan [Borneo]), China (Taiwan) and Nepal have to be checked.