. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 376 bulletin: museum of comparative zoology a. Costa without bristles; prothoracic bristle absent; tibiae without preapical bristle. (Palloptera (Fig. 640)) PALLOPTERiNiE Costa with bristles; prothoracic bristle present; tibiae with two pre- apical bristles. (Eurygnathomyia) . EURYGNATHOMYIINjE 122. Anal cell complete or nearly so; arista pubescent 123 Anal cell entirely wanting; no preapical bristles. (If hind meta- tarsi are short and thickened see Leptoceridae, couplet 142) .... 132. Figs. 640-646. Pallopteridae, L
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 376 bulletin: museum of comparative zoology a. Costa without bristles; prothoracic bristle absent; tibiae without preapical bristle. (Palloptera (Fig. 640)) PALLOPTERiNiE Costa with bristles; prothoracic bristle present; tibiae with two pre- apical bristles. (Eurygnathomyia) . EURYGNATHOMYIINjE 122. Anal cell complete or nearly so; arista pubescent 123 Anal cell entirely wanting; no preapical bristles. (If hind meta- tarsi are short and thickened see Leptoceridae, couplet 142) .... 132. Figs. 640-646. Pallopteridae, Lonchaeidae, Thyreophoridae, Sphaeroceridae, Leptoceridae, Astiidae, Canaceidae 640. Palloptera, head from side. Pallopteridae. 641. Lonchaea, wing. Lonchaeidae. 642. Thyreophora, head in profile view. Thyreophoridae. 643. Sphaerocera, dorsal aspect (Howard) Sphaeroceridae. 644. Leptocera, wing (Spuler) Leptoceridae. 645. Astia, wing. Astiidae. 646. Canace, wing. Canaceidae. 123. Hind metatarsi shortened and incrassate (Fig. 643); no sterno- pleural bristle, vibrissae strong, dorsocentral bristles weak. Cos- mopolitan, dung flies. (Sphaerocera (Fig. 643), Copromyza ( = Cypsela, Borborous), Lotobia, Scatophora ( = Olina)). (BOR- B6RID/E, CYPStLlDM) SPPLEROCERID^ Hind metatarsi not short and thick 124 124. Postvertical bristles converging, presutural dorsocentral bristle pres- ent, fronto-orbital bristles directed outward, interfrontal cross- bristles usually present, one sternopleural bristle. (If preapical tibial bristles are present see Trixoscelidae, couplet 117). Sea- shore species. (Tethina, Neopelomyia, Pelomyia, Phycomyza, Rhicnoessa) TETHlNIDiE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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