Cothornobata viriata ( Enderlein, 1922 )

Li, Xuankun, Marshall, Stephen A. & Yang, Ding, 2015, A review of the Oriental species of Cothornobata Czerny (Diptera, Micropezidae, Eurybatinae), Zootaxa 4006 (2), pp. 201-246 : 242-244

19. Cothornobata viriata ( Enderlein, 1922)

( Fig. 24 )

Grammicomyia viriata Enderlein, 1922: 174 . Type locality: Deli, Sumatra. Trepidarioides viriata (Enderlein) : Hennig, 1935: 307.

Cothornobata viriata (Enderlein) : Steyskal, 1977: 13.

Diagnosis (From photo and original description).

Male and Female. Head brownish. Head with 1 frontal seta and 1 orbital seta. Antenna dark yellow; pedicel with 1 ventral apical seta nearly half length of first flagellomere; first flagellomere 1.7X as long as broad; arista brown and bare, nearly 3.6X length of first flagellomere. Proboscis brownish-yellow. Thorax dull orange. Scutellum slightly convex, angled dorsally. Legs mostly yellow, with coxae brownish-yellow; fore femur brownish-yellow on apical half; fore tibia pale yellow. Wing clear, with a light brown apical band and a light brown middle band. Bm-cu distal to CuA2, A1+CuA2 3X as long as CuA2; distance between apex of R2+3 and R4+5 half as long as M1 beyond dm-cu. Halter pale yellow. Abdomen dark brown. Male genital fork yellowish brown, relatively short.

Material examined. LECTOTYPE: SUMATRA, Ober–Langkat, Deli, 1894. M.Ude S. (♂, MNBG) (Male and fenale cotypes were examined and the male type photographed by the second author in 2002). The male is here designated as lectotype.

Distribution. Oriental: Sumatra. Previous records from New Guinea ( Evenhuis 1989) were in error ( McAlpine, 1998).

Remarks. This species differs from all other Oriental Cothornobata in its yellow legs and pale reddish-brown thorax. The lectotype was not dissected as it is the only known male. Relationships of this species should be reevaluated when additional males become available for dissection.

Figures

FIGURE 24. Cothornobata viriata Enderlein, type male, left lateral.