Melanagromyza obtusa (Malloch)

(Figs 25–27)

Agromyza obtusa Malloch, 1914: 323 .

Melanagromyza obtusa: Hennig, 1941: 174 . Melanagromyza weberi Meijere, 1922: 20 .

Material examined. 1♂,2♀, Loei, Phu Ruea National Park, 17˚29.907´N, 101˚20.483´E, 1195 m a.s.l., 5–12 viii 2006, Malaise trap, Nukoonchai Jaroenchai; 1♀, Phetchabun, Khao Kho National Park, 16˚32.546´N, 101˚02.501´E, 274 m, 5–12 xi 2006, Malaise trap, Somchai Chachumnan & Saink Singtong.

Remarks. This black species is characterized by the shining coppery-greenish mesoscutum and abdomen, a whitish fringe on the calypter, a large ocellar triangle with the ventral apex obtuse and extending almost to the dorsal margin of the lunule, and a long phallapodeme and phallus; wing length 2.2–2.7 mm in male. Larva is known as a seed-feeder in young pods of Cajanus, Phaseolus, Vigna spp., etc. (Leguminosae).

Description. The male genitalia are described below in detail: epandrium with a spine in inner posteroventral corner (as seen in M. cirrappendicula) and a long spine mesal to that; surstylus projected roundly on anteroventral part of epandrium, bearing 15–17 spines in two irregular rows along distal margin; cercus 2/3 as high as epandrium, with a row of five stout setae on anteroventral part; phallic hood 140 µm long, with serrations of minute spinules along lateral margins and a pair of distinct spines before lateral apices; hypandrium 440 µm long, with basal apodeme about 1/2 as long as sidearm; pregonite crescent-shaped, with several sensillae; postgonite as long as pregonite, shortly bifurcate at base; phallapodeme 740 µm long; phallus 530 µm long, basiphallic sclerites narrow and extremely long, ending a approximate midpoint of meso+distiphallus; mesophallus with ventral process extending posteriorly on lateral sides of distiphallus; distiphallus with long tube distally and surrounded by spinulose membrane laterally; ejaculatory apodeme 240 µm long, 190 µm wide.

Distribution. Taiwan, Malaysia (Peninsula), Thailand, Indonesia (Java, Irian Jaya), India, Sri Lanka, Papua New Guinea, Australia.