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137 



on middle and hind legs) ; tibiae mainly covered by blended yellow and purple 

 recumbent scales, with those of apices dark purple, suberect, particularly on 

 hind legs. Tarsi primarily dark scaled blended with yellow; second segment and 

 often first segment of each tarsus with a narrow basal pale ring; segments 3, 4, 

 and 5 dark. Wings: Scales narrow, dark. 



ADULT MALE. — Coloration similar to that of female. TERMINALIA (Fig. 

 69). Ninth tergite (IX-T) with dorsal band narrow, heavily sclerotized; lobes 

 (IXT-L) narrow, heavily sclerotized, widely separated, each bearing a variable 

 number of stout spine-like setae. Tenth sternite (X-S) prominent, heavily 

 sclerotized. Phallosome (Ph) heavily sclerotized, conical, open ventrally, closed 

 dorsally on basal half; apical third of each plate with a broad lateral thorn-like 

 projection and a dorsal longitudinal toothed ridge. Claspette (Cl) extending 

 near apical third of basistyle, consisting of a short broad stem fused with basi- 

 style, and a very large subspherical crown; crown entirely covered with short 

 curved setae and bearing subapically a large, erect sickle-shaped filament on 

 outer margin. Basistyle (Bs) about twice as long as basal width, curved, nar- 

 rower beyond middle, and bluntly rounded at apex, clothed with sparse scales 

 and long setae; basal and apical lobes absent. Dististyle (Ds) about half as 



Fig. 69. Psorophora horeardii Coquillett. A, Hind leg. B, Male terminalia. 



