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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 78 



spots ; fourth abdominal segment densely pollinose to apex " (Al- 

 len) ; first two segments with a median marginal pair, third with 

 marginal row, and fourth more or less thickly bristly. 



Legs black; mid tibiae with one strong bristle, sometimes one 

 weaker one above it; hind tibiae evenly ciliate with one longer 

 bristle, front pulvilli longer than last tarsal joint. 

 Wing venation as in frenchii. 



Genitalia (fig. 9) apparently of the same structure as in the 

 frenchii complex. Differs from the typical frenchii in that the entire 

 genitalia are larger and the inner forceps are inclined inwardly at 

 their apices and terminate in more slender points. 

 Length, 5-8 mm. 

 Distrihufion. — Eastern part of the United States. 



According to Allen, melalophae is 

 readily distinguished by its more slender 

 shape and smaller size, narrow front, 

 deep golden pollen of face and front, 

 and the mottled, yellowish gray pollina- 

 tion of the abdomen which is in contrast 

 to the more uniform sheen of frenchii 



6. ACHAETONEURA CUCULLIAE, new species 



Front of female at vertex 0.33, at base 

 of antennae 0.41 the head width; front 

 and face cinereous, the former without 

 sheen, the latter more or less shiny; 

 frontal bristles ten in number, the inter- 

 mediate pairs weaker than those which precede or follow them, the two 

 uppermost ones reclinate. When viewed from front, the inner eye 

 margins are but slightly divergent ; frontal bristles descending nearly 

 or quite to the lower half of the head ; facial ridges bristly on lower 

 half, the uppermost bristles hardly reaching the lowest frontals. 

 Two pairs of large proclinate orbital bristles; inner verticals large, 

 the outer ones one-third their size. Facial depression cinereous, 

 shining, and about four times as wide as either parafacial. The 

 antennae appear to arise at a point about two-thirds the head height, 

 black, the second joint about one-half the length of the third, and the 

 arista tapering from base to apex. Palpi yellow ; bucca narrow, 

 about one-eight eye height. 



Thorax black, gray pollinose, bearing four dorsocentral and four 

 sternopleural bristles; lateral bristles strong. Scutellum with three 

 pairs of marginal bristles besides the apical ones. 



Abdomen black, thinly gray pollinose with a slight bluish cast; 

 first segment black, destitute of bristles; second segment with one 

 median pair; third with marginal row; fourth wholly covered with 



Figure 9. — Achaetoneura mela- 

 lophae allen, male genitalia, 

 side view 



