Trichomachimus hoanganus, Tomasovic & Constant & Rasmont, 1802

Tomasovic, Guy, Constant, Jérôme & Rasmont, 1802, Notes on Oriental Asilidae with six new species from Vietnam (Diptera: Brachycera), Belgian Journal of Entomology 47, pp. 1-23 : 1-23

publication ID	https://doi.org/ 10.5281/zenodo.13272459
persistent identifier	https://treatment.plazi.org/id/AB3B2105-FFAB-FFCD-CB45-FC92FF1BF7EF
treatment provided by	Felipe
scientific name	Trichomachimus hoanganus
status	sp. nov.

Treatment

Trichomachimus hoanganus sp. nov.

urn:lsid:zoobank.org:act:6F757485-80E9-45A5-BDE5-0

Figs 11 View Fig , 12 A–C. View Fig

DIAGNOSIS. The species is close to T. nigrus Shi, 1992 and T. oreophilus . It can be separated from T. nigrus by the black piles on the presutural area of the scutum and the subrectangular epandrium (yellow piles on scutum and epandrium slender and slightly curved in T. nigrus ); from T. oreophilus by the epandrium not notched at distal part (epandrium deeply notched distally in T. oreophilus ).

ETYMOLOGY. The species epithet refers to Hoang Lien National Park , the location where the holotype was collected in North Vietnam .

TYPE MATERIAL. Holotype ♂ ( Fig. 11 View Fig ): Vietnam, Hoang Lien N.P., 22°21’N 103°46’E, 1- 5.VII.2013. Leg J. Constant & J. Bresseel. IG. 33.453 GoogleMaps

DESCRIPTION

Male: ( Fig. 11 View Fig ) length: 14 mm. Medium sized, black species. Scutellum with yellowish grey tomentum. Abdomen with yellowish piles and setae. Wings infuscate.

Head: ( Fig. 11 C View Fig ) black, with yellowish grey tomentum; mystax with white setae and black setae on the upper part. Frons with orbital and ocellar bristles black, postocular setae black, occipital piles black anteriorly and white posteriorly, lower occipital piles yellowish. Palpi black with black and fine setae. Proboscis black with white piles on basal part. Antennae black with black setae; scape sligthly longer than pedicel; postpedicel twice longer than scape and pedicel together; style half as long as postpedicel; and with microsegment.

Thorax: ( Fig. 11 View Fig ) scutum with three broad black stripes; fine, black and sparse piles on presutural area, and longer ones on postsutural area. Setae black and long; 2 notopleural, 1 supra-alar, 2 postalar. Scutum with yellowish grey tomentum and sparse, fine, black piles on disc; 7 long, black, fine scutellar setae. Pleura with yellowish grey tomentum; anepisternum with fine, black piles on upper part; katepisternum with yellowish piles; katatergal and metepisternal setae black. Scutellum with yellowish grey tomentum and 6 black scutellar setae.

Legs: ( Fig. 11 D View Fig ) black, profemora devoid of setae and long whitish piles on ventral part; meso- and metafemora with black setae and short yellowish piles dorsally, and longer ones ventrally. Tibiae with black setae; pro- and metatibiae and tarsi with a short dense yellow brush.

Wings: ( Fig. 11 A View Fig ) brownish; discal cell and basal radial and medial cell devoid of microtrichia.

Abdomen: ( Fig. 11 A, D View Fig ) tergites and sternites with yellowish tomentum and long, fine, yellow setae and piles.

Male genitalia: shining black with sparse yellow piles. Epandrium nearly rectangular, with deep concavity at distal part ( Fig. 12 A View Fig ). Gonocoxites triangular, truncate apically. Dististylus without small denticles or piles ( Fig. 12 B View Fig ).

NOTE. Phallus of the Machiminus type ( Fig. 12 C View Fig ) .