. Diptera Brachycera. Brachycera. 392 PLATYPEZID-E. 7-segmeuted in § ,* with two-jointed ovipositor; pubescence sparse, especially in § . Legs normal; hind tarsi with basal joints much dilated; hind tibiae a little dilated towards tip; middle tibise spurred ; pubescence slight. Wings proportionately very broad; auxiliary vein ending before middle or wing ; 1st, 2nd, and 3rd longitudinal veins slightly sinuous, the last ending near wing- tip ; 4th vein when near wing-margin bending suddenly upwards at a sharp or reflexed angle (with an appendix at the flexure), t the remaining section curved (t
. Diptera Brachycera. Brachycera. 392 PLATYPEZID-E. 7-segmeuted in § ,* with two-jointed ovipositor; pubescence sparse, especially in § . Legs normal; hind tarsi with basal joints much dilated; hind tibiae a little dilated towards tip; middle tibise spurred ; pubescence slight. Wings proportionately very broad; auxiliary vein ending before middle or wing ; 1st, 2nd, and 3rd longitudinal veins slightly sinuous, the last ending near wing- tip ; 4th vein when near wing-margin bending suddenly upwards at a sharp or reflexed angle (with an appendix at the flexure), t the remaining section curved (the concavity hindwards), ending in wing-margin near tip of 3rd vein, but not meeting it; 5th and 6th veins straight. Three posterior cells; discal cell long, nar- row; anal cell shortened, of varying length, always distinctly longer than 2nd basal cell, tip pointed. Anterior cross-vein near base of discal cell; posterior cross-vein near wing-margin. Alula? rather long; squamae moderately large ; halteres large. Range. Europe, North and South America, South Africa, and the Orient. Life-history. Some species live in fungi, especially in Boletus. 327. Platypeza argyrogyna, Meij. Platypeza argyrogyna, de Meijere, Tijd. v. Ent. 1, p. 257 (1907). Platypeza orientalis, Brunetti, Itec. Ind. Mus. vii, p. 481(1912). Platypeza obscura, Brunetti, loc. cit. p. 482 (1912). ? Platypeza ylaucescens, Walker, Proc. Linn. Soc. Lond. iv, p. 117 (1860). Head in c? with eyes varying from red to bright or dull brown in the upper facets, lower ones coffee-brown ; vertical triangle small, greyish ; ocelli very distinct; face greyish or whitish grey ; proboscis brownish yellow, with very large labella marked with black ; palpi yellow ; antenna? brownish yellow, 3rd joint with microscopic whitish pubescence; arista black, yellowish at base ;. Fig. 39.—Platypeza argyrogyna, Meij., antenna. occiput ash-grey or bluish grey, with minute black bristles. In $ , Irons about one-quarter of head, with paralle
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
