Cephalodromia gobica ( Zaitzev, 1972 )

Evenhuis J., Neal L., 2019, The genus Cephalodromia (Diptera: Mythicomyiidae) in China, Israel Journal of Entomology (Oxford, England) 49 (2), pp. 1-9 : 5-6

Cephalodromia gobica ( Zaitzev, 1972)

Cyrtosia gobica : Zaitzev 1972: 854. (Type locality: Mongolia: [SW Gobi], Arts Bogdo, 20 km S Hovd). HOlOtYpe ♂ in ZIS.

Cephalodromia gobica (Zaitzev) : Evenhuis 2010: 20.

Diagnosis: This species can be separated from the congeners in China by the predominantly black legs (predominantly yellowish brown in C. freidbergi and C. seia ). From C. freidbergi it is also separated in males by the black epandrium (yellow in C. freidbergi ).

Redescription: Lengths. Body: 1.5, wing: 2.0 mm.

Male. Head. Shining black, occiput and vertex with sparse short appressed brown hairs; eyes dichoptic, separated at vertex by 1.3× distance between lateral ocelli; antennae broken off and missing; venter of head black, extended posteriorly as single medial ridge; proboscis black, tubular, length ca 2× heaD heiGht; labRum ⅗ length of proboscis.

Thorax. Mesonotum subshining black with dusky yellowish patterning, with scattered sparse white hairs dorsally, laterally, and posteriorly, disc predominantly bare, slight pruinosity medially; yellowish brown on following: interhumeral mark and humeral callus (coalesced), notopleural line to postalar callus, broadly interrupted at transverse suture; scutellum yellowish brown with brown spot basomedially; pleura with propleuron and anepisternum shining, remaining pleura pruinose; propleuron yellowish brown, anepisternum black with yellow anteriorly and centrally, katepisternum and meron yellow above, dark brown to black below; katepimeron yellow; anepimeron and katatergite black with yellow dorsally; halter stem yellow, knob white with brown dorsally.

Legs. Coxae black; femora black, yellow apically; fore tibia yellow; mid and hind tibiae black; tarsi and claws black.

WinG. HYaline, sliGhtlY smOkY apicallY; veins bROwn; cOsta enDs ⅓ waY beYOnD end of R 4+5 to M 1; costal cell hyaline; vein Sc incomplete, ending at level about equal to origin of vein R 2+3; R 2+3 sliGhtlY upcuRveD apicallY, enDinG in cOsta ⅗ waY beyond end of R 1 to R 4+5; R 4+5 slightly downcurved to wing margin on apical third; anal cell open in wing margin by width subequal in length to crossvein r–m; fringe of hair on posterior margin of wing minute.

Abdomen. Dorsum black, scattered yellowish white hairs on tergites IV–VI; tergites with yellow fascia posteriorly; sternites dark brown to black.

Genitalia (not dissected). Epandrium and gonocoxa black.

Material examined: China: 1♂ MinG TOmbs, 40 km N BeijinG, 1.x.1993, A. FReiDbeRG & F. Kaplan (SMNHTAU) .