. Diptera Brachycera. Brachycera. PROSOPOCHKYSA.—MICROCHRYSA. 87 one-fifth width of head, slightly tinged with blue, brilliant violet immediately above antennae. Thorax punctate, wholly brilliantly shining metallic blue or blue-green, with very short whitish pubescence. Abdomen metallic black or dark bronze-green, with very short sparse whitish pubescence, which is a little longer round margin and tip ; venter darker, nearly black. Legs black, with microscopic pubescence : all the tarsi yellowish white except. Fig. 6.—Prosojxchrysa vitripennis, I)ol., wing. at tips. Wings clear, veins and stig
. Diptera Brachycera. Brachycera. PROSOPOCHKYSA.—MICROCHRYSA. 87 one-fifth width of head, slightly tinged with blue, brilliant violet immediately above antennae. Thorax punctate, wholly brilliantly shining metallic blue or blue-green, with very short whitish pubescence. Abdomen metallic black or dark bronze-green, with very short sparse whitish pubescence, which is a little longer round margin and tip ; venter darker, nearly black. Legs black, with microscopic pubescence : all the tarsi yellowish white except. Fig. 6.—Prosojxchrysa vitripennis, I)ol., wing. at tips. Wings clear, veins and stigmatic region )^ellowish; 3rd vein simple, straight, ending at some distance before wing-tip ; halteres apple-green. Length, 5 mm. Redescribed from two <S 6 and three § $ in the Indian Museum, and some in the Pusa collection. Genus MICROCHRYSA, Lw. Microchrysa, Loew, Verb. Ges. Wien, v, p. 146 (1855) ; Brunetti, Rec. Ind. Mus. i, p. 103 (1907). Clorisoma, Rondani, Dipt. Ital. Prod, i, p. 168 (1856). Chlorosia, Rondani, op. cit. iv, p. 11 (1861). Genotype, Musca polita, L. (Europe); by original designation. Head broader than thorax, face small, slightly pubescent; occiput concave in <5, posterior eye-orbits distinct in $ ; ocelli equidistant; eyes bare, in S contiguous, upper facets larger than lower ones, in $ widely separated, facets equal in size. Antenna? of typical Sargid form, 3rd joint with four annulations, arista practically apical. Thorax longer than broad, slightly wider behind, shining metallic, with short dense inconspicuous pu- bescence. Abdomen very short, rounded, shining : pubescence extremely short, though sometimes dense. Legs simple, tibiae sometimes slightly dilated apically. Wings of normal Sargid type, terminations of 4th vein less parallel; thoracic squamae more normally shaped than in Sargus, pubescent. In all minor characters mainly as in Sargus. Range. Europe, Asia, South Africa, North and South America. Life-history. The common M.
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
