Trachythorax expallescens Redtenbacher, 1908

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 : 33-34

publication ID	https://doi.org/ 10.5281/zenodo.13271854
persistent identifier	https://treatment.plazi.org/id/B2191E3C-3157-FFAE-FE41-F995FCA941B2
treatment provided by	Felipe
scientific name	Trachythorax expallescens Redtenbacher, 1908
status

Treatment

Trachythorax expallescens Redtenbacher, 1908 View in CoL

Trachythorax expallescens REDTENBACHER, 1908: 508 View in CoL [described].

Trachythorax expallescens View in CoL – OTTE & BROCK, 2005: 336 [catalogued].

MATERIAL EXAMINED. TYPE MATERIAL. (examined from photographs on PSF – BROCK et al., 2021) SRI LANKA: HT ♀: Nord-Ceylon, Coll. Bolivar ( MNCN) .

COMMENTS. The female holotype was never examined by REDTENBACHER (1908) as he stated “I only know this species from Brunner’s notes”. The specimen’s colouration is strongly faded and the mesonotum is slightly more than two times the length of the pronotum, a feature not found in any other species of Trachythorax . In T. sparaxes ( Westwood, 1859) , another species from Sri Lanka, the mesonotum is 2x the length of the pronotum. REDTENBACHER (1908) distinguished this species from T. sparaxes by the globose head. However, the specimen was mounted with the head in a strange position and a detailed examination of the holotype or the study of conspecific material is necessary to fully clarify the generic attribution of the species.

DISTRIBUTION. Sri Lanka ( REDTENBACHER, 1908).