. Diptera Brachycera. Brachycera. LYCASTRIS. 277 separated on vertex ; facets all equal. In $ , a moderately wide, nearly linear frons, flush with eyes for a considerable distance. Frons in both sexes after a certain distance projecting abruptly forward into a strong prominence bearing the antennae at the tij). Below the anteiuice, the face is slightly cut away. Lower part of head extremely produced into a nearly i)orrectbare conical rostrum, not produced below eyes at sides, much longer than in lihiw/ia, and up to nearly three times as long as width of eye in profile. Proboscis about twice as
. Diptera Brachycera. Brachycera. LYCASTRIS. 277 separated on vertex ; facets all equal. In $ , a moderately wide, nearly linear frons, flush with eyes for a considerable distance. Frons in both sexes after a certain distance projecting abruptly forward into a strong prominence bearing the antennae at the tij). Below the anteiuice, the face is slightly cut away. Lower part of head extremely produced into a nearly i)orrectbare conical rostrum, not produced below eyes at sides, much longer than in lihiw/ia, and up to nearly three times as long as width of eye in profile. Proboscis about twice as long as rostrum, very slender, cylindrical, capable by means of its membranous basal part of being prolonged to a greater length than that of the whole body. Antennae normal, 3rd joint rounded or ovate. Thorax subquadrate; scutellum normal, semicircular; both densely pubescent. Abdomen approximately ovate, arched, tip narrowed, pubescent. Genital organs curved under tip of abdomen. Legs rather long and strong, simple, moderately pubescent. Winr/s with a distinguishing venation. Subcostal cell with a peculiar row of about seven or. Fig. 53.—Li/canfris alhipcs, Walk. eight small transverse veinlets, the first at the tip of the auxiliary vein. 3rd vein nearly straight; 4th vein bent downwards just before its upward turn, apical section wavy, closing 1st posterior cell in a fine ])oint almost exactly on wing-border. Anterior cross-vein extremely obli(]ue and very curved, placed towards tip of discal cell (more distal tlian in any other Oriental genus known to me), otli vein bent upwards in a broad curve, instead of angled as in most genera; anal vein continued forward for a considerable distance before reaching the margin. liantje. India and Formosa. Life-Jnstorif unknown. This genus is one of the most conspicuous in the family. Its extremelv produced conical rostrum and still longer proboscis, its abnormal venation (due to the numerous additional veinlets in the subeostal cell)
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
