Philodicus phiadenensis, 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-FFAE-FFCB-CB23-FD20FC74F92B
treatment provided by	Felipe
scientific name	Philodicus phiadenensis
status	sp. nov.

Treatment

Philodicus phiadenensis sp. nov.

urn:lsid:zoobank.org:act:944325D9-145F-4C79-85BC-15EB7EFF1465

Figs 3 View Fig , 5 D–E View Fig , 6. View Fig

DIAGNOSIS. Philodicus phiadenensis sp. nov. can be separated from P. chinensis Schiner, 1868 by the postpedicel as long as the scape and pedicel combined (much shorter than scape and pedicel combined in P. chinensis ); from P. fuscipes Ricardo, 1921 by the hind femora covered with black setae (covered with mixed white and black setae in P. fuscipes ); from P. javanus (Wiedemann, 1919) by the white and black setae on the mesotibiae (only black setae in P. javanus ).

ETYMOLOGY. The species epithet refers to Phia Den, the location where the holotype was collected in Cao Bang province, North Vietnam .

TYPE MATERIAL. Holotype ♂ ( Fig. 6 View Fig ): Vietnam, Phia Den , 22°34’N 105°53’E, 08.VIII.2010. IG. 31.668, Leg. J. Constant & P. Limbourg. GoogleMaps

DESCRIPTION

Male: ( Fig. 6 View Fig ) Length of body: 18 mm. Body black and smoky brown. Legs black. Wings slightly infuscate.

Head: ( Fig. 6 B View Fig ) face with yellowish tomentum. Mystax yellowish. Ocellar tubercle small. Occiput with greyish tomentum, postocular bristles black and stout, occipital setae white. Antennae black, scape as long as pedicel, both with black setae; postpedicel oval, as long as scape and pedicel together; style black and narrow, as long as postpedicel. Proboscis shiny black with tuft of white setae on ventral part. Palpi black with fine and long white setae.

Thorax: ( Fig. 6 A, C–D View Fig ) antepronotum with black bristles. Scutum sparsely covered with short black setae. Bristles: 2 notopleurals, 2 supra-alar, 2 postalar, 6 dorsocentral. Scutellum with short ridge, 2 scutellar bristles, and black, fine setae on disc. Katatergal and metepisternal setae white.

Legs: ( Fig. 6 C–D View Fig ) black covered with short and fine white hairs; stout, black or yellowish setae. Profemora with only 2 setae; mesofemora with 3 rows of setae; metafemora with numerous setae. Pro- and mesotibiae with black and white setae; metatibiae with black setae and short, sandy yellow brush. Pro- and mesotarsomeres with black and yellowish setae; metatarsomeres with only black setae.

Wings: ( Fig. 6 C View Fig ) iridescent, slightly infuscate.

Abdomen: ( Fig. 6 A, C View Fig ) tergites blackish with black and white short hairs and distal silvergrey stripe; tergites 1-4 with lateral white setae. Sternites greyish with fine, long, white hairs.

Male genitalia: ( Fig. 5 D–E View Fig ) epandrium broadly triangular with some black setae. Gonocoxite short; dististylus large, menbranous and with apical tuft ( Fig. 5 E View Fig ). Phallus with complex, articulated distiphallus ( Fig. 5 D View Fig ).

NOTE.

The condition of having the phallus with complex, articulated distiphallus is currently not recorded in any Afrotropical species. In those species, all males show a distiphallus with three tubes of various lengths ( LONDT, 1978; TOMASOVIC, 2012).