Trachythorax gohi Brock, 1999

Bresseel, Joachim & Constant, Jérôme, 1893, Review of the Oriental stick insect genus Trachythorax Redtenbacher, 1908 with two new species from Vietnam and comments on egg parasitism and morphological counteradaptations (Phasmida, Lonchodidae, Necrosciinae), Belgian Journal of Entomology 120, pp. 1-56 : 34

Trachythorax gohi Brock, 1999

( Figs 9 , 24 )

Trachythorax gohi BROCK, 1999: 122 , fig. 81 [described and figured].

Trachythorax gohi – SEOW-CHOEN, 2000: 34, plate 87 [in Malaysia, figured]. — OTTE & BROCK, 2005: 336 [catalogued]. — BROCK et al., 2016: 181 [catalogued, type data].

MATERIAL EXAMINED. TYPE MATERIAL. (examined from photographs on PSF – BROCK et al., 2021) MALAYSIA: HT ♀: Peninsular Malaysia, Gunung Jerai, Kedah, 1987, D. Goh ( NHMUK) .

ADDITIONAL MATERIAL. (examined from photographs provided by Frank Hennemann) MYANMAR: Tenasserim, leg. Lemann, 18.III–16.IV.1996, FH 0306 - 1 ( FH) .

PHOTOGRAPHIC RECORDS. THAILAND: 2♀♀, 1♀ nymph ( Fig. 24 A–B, D ): Surat Thani Province, Phanom District, Khlong Sok, Khao Sok N.P., C. Hübner; 1♂ ( Fig. 24 C ); same data as preceding, 26.iii.2012, L. Day; mating pair: Narathiwat Province, Waeng District , 5.VII.2021, iNaturalist user Khonkhinaoi https://www.inaturalist.org/observations/85908458 .

COMMENTS. Trachythorax gohi was described based on a single female by BROCK (1999). The species is here recorded for the first time from Thailand. Both sexes of the species were photographed in Khao Sok National Park, revealing the unknown male ( Fig. 24 C ). It is quite similar to T. albomaculatus sp. nov., however, T. gohi can be distinguished by (1) the two black, longitudinal stripes behind the eye; (2) females lacking the conspicuous white V-shaped patch on the mesonotum which is chocolate-brown instead; (3) both sexes have the mesonotum with a distinct black, triangular marking on the posterolateral angles, contrasting with the rest of the mesonotum.

DISTRIBUTION. Myanmar (Tenasserim), Northern peninsular Malaysia, Southwestern Thailand ( Fig. 9 ).

Figures

Fig. 9. Trachythorax spp. distribution map.

Fig. 24. Trachythorax gohi Brock, 1998 in Khao Sok N.P., Thailand. A–B, ♀, dorsal view. C, ♂, dorsal view. D, ♀ nymph. A–B, D. © C. Hübner. C. © L. Day.