Agromyza flavisquama Malloch

Sasakawa, Mitsuhiro, 2013, Thailand Agromyzidae (Diptera) — 2, Zootaxa 3746 (4), pp. 501-528 : 503

Agromyza flavisquama Malloch

( Figs 1, 2 )

Agromyza flavisquama Malloch, 1914: 318 .

Material examined. 1♂ 2♀, Loei, Phu Kradueng National Park, 16˚56.569´N, 101˚49.045´E, 274 m a.s.l., 18–25 ix 2006, Malaise trap, Sutin Glong-Iasae.

Remarks. This black species is similar to the Australian Agromyza mellita Spencer, 1977 , in having the yellowish white fringe on the calypter, the brown-tinged tibiae and brown tarsi, and the typical form of the paraphallus as a grass-miner; wing length 1.9 mm in male. However, in A. flavisquama , the epistome is undeveloped and the distiphallus is short and globular, whereas in mellita , the epistome is distinctly broad and the distiphallus consists of long tubules distally. The dc are variable in number from 1+4 to 0+3, and also ori are two to four. Larva mines the leaf of Panicum repens Lamk. (Poaceae) in Taiwan (Sasakawa 1972).

The male genitalia are described for the first time: surstylus small, lobate, bearing nine or ten spines in two to three irregular rows and few setae along ventral margin; cercus slightly lower than epandrial height, slightly broadened ventrally, densely setose ventroapically; hypandrium 340 µm long, with sidearm curved and basal apodeme very short, pregonite minutely spinulose, postgonite with three or four sensillae apically; phallapodeme 650 µm long; phallus 300 µm long (figs 1, 2, showing typical form of grass-miner, but host plant unknown); ejaculatory apodeme 180 µm long, blade well-expanded, 150 µm wide. The distiphallus is similar structurally to that of A. latipennis , but its distal lobe is distinctly rounded in lateral side, and the basiphallus is lacked the spinulose, membranous processes.

Distribution. Taiwan, Thailand (new record).

Figures

FIGURES 1 – 8. Male genitalia of Agromyza flavisquama Malloch (1, 2) and Melanagromyza ancyla sp. nov. (3 – 8, holotype). 1, 6, phallus, lateral view; 2, 7, phallus, ventral view; 3, surstylus, inner view; 4, proctiger, ventral view; 5, hypandrium, left half of ventral view; 8, ejaculatory apodeme, lateral view. Scale 0.1 mm.