. Diptera Brachycera. Brachycera. PHTIIIIUA. 285 considerably longer than 2nd, 3rd vein forked, the 2nd sub- niarginal cell elengate; anterior cross-vein at about middle of discal cell; anal cell closed just before wing-border. Range. World-wide. Life-history unknown. The adults occur on bare patches of ground among low-growing flowers, and on Composite. 227. Phthiria gracilis, Wall: Phthiria gracilis, "Walker, Ins. Saund., Dipt. pt. 3, p. 194 (1852). S $ . Head in S black ; vertex very small, dark grey, with three or four short black hairs ; ocelli dark ruby-red, shining; eyes closely co
. Diptera Brachycera. Brachycera. PHTIIIIUA. 285 considerably longer than 2nd, 3rd vein forked, the 2nd sub- niarginal cell elengate; anterior cross-vein at about middle of discal cell; anal cell closed just before wing-border. Range. World-wide. Life-history unknown. The adults occur on bare patches of ground among low-growing flowers, and on Composite. 227. Phthiria gracilis, Wall: Phthiria gracilis, "Walker, Ins. Saund., Dipt. pt. 3, p. 194 (1852). S $ . Head in S black ; vertex very small, dark grey, with three or four short black hairs ; ocelli dark ruby-red, shining; eyes closely contiguous for nearly all the distance to the small protruding triangular dark grey frons, which bears a few black hairs; mouth-opening extremely large, extending from immediately below base of antennae to lower part of head, black ; face and under part of head black, both with long black hairs : antennae black ; 1st and 2nd joints as long as wide, subglobular, with two or three short black hairs each, 3rd joint narrower, flattened, about two and a half times as long as first two together, with microscopic depressed pubescence and a short style-like prolonga- tion at tip on upper side; proboscis as long as whole body, black, slender, gently curved ; palpi half as long as head, porrect, black. Head in 2 bright orange-yellow ; frons at vertex about half as. Fig. 20.—Phthiria gracilis, Walk., wing. wide as at level of antennas, where it forms nearly one-third the width of the head ; a broad black stripe from vertex to above antenna?, sometimes wholly interrupted in middle ; ocelli distinct; sides of face between antennas and eyes blackish ; occiput black, broadly orange behind eye-margins, the colour not extending behind the vertex. Thorax in $ dark blackish brown, with a little short dark brown pubescence, which is longer towards the sides of the dorsum; scutellum concolorous. In $ greenish grey, lower margin of dorsum rather broadly though somewhat irregu- larly pale yellowish ;
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
