330 



8. Heteromyia hirta, n. sp. 



Female. — Similar in coloration to flavipes. Structurally sep- 

 arable by the following characters : antennae not more than one and a 

 fourth times as long as head and thorax together ; mesonotum with 

 closely placed, very distinct hairs ; third vein to less than three fourths 

 the wing-length. 



Male. — Differs from the male of flavipes in having the mesono- 

 tum with distinct hairs and the hypopygium much smaller. 



Length: male, 1.5 mm.; female, 2-2.5 "^"''• 



Type locality, Muncie, 111., May 24, and July 5, 19 14. Taken by 

 the writer under the same conditions as flavipes. 



9. Heteromyia flavipes Meigen 



Ceratopogon flavipes Meigen, Syst. Beschr. Eur. Zweifl. Ins., Vol. 1, 1818, p. 82, 

 sp. 35. 



Female. — Glossy black. Base of abdomen sometimes yellowish. 

 Legs yellow, coxae, apices of femora, apices of fore and mid tibiae 

 (narrowly) and of posterior pair (broadly), apical three joints of fore 

 and mid tarsi and whole of posterior pair, blackened. Wings slightly 

 grayish, veins brown. Halteres black, stems yellowish. 



Frons narrow, the sides converging anteriorly; antennae with the 

 second joint of moderate size, flagellum slender, entire length of an- 

 tenna equal to one and a half tunes the combined length of head and 

 thorax. Mesonotum without distinct discal setulae. Abdomen elon- 

 gate, slightly flattened. Legs strong, fore femora distinctly thicker 

 than the mid and hind pairs, their apical half with about twelve short 

 stout thorns on antero-ventral surface ; mid and hind femora unarmed ; 

 hind tibiae with the hairs on dorsal surface rather setulose; basal joint 

 of hind tarsus slightly thickened, tapering to apex, as long as next 

 three joints combined; fourth joint of all tarsi short, obcordate; fifth 

 joint more than twice as long as fourth, without ventral spines ; claws 

 on all legs subequal, those on hind tarsi not longer than on the other 

 pairs. Third vein to four fifths the wing-length; first not reaching to 

 middle of last section of third, the section beyond the cross vein about 

 one third as long as preceding section ; media forking distinctly in 

 front of cross vein ; cubitus forking in line with base of posterior 

 branch of media. 



Male. — Much darker than the female ; legs black, the fore pair ex- 

 cept apices of tarsi, the bases of mid and hind femora, and bases of 

 tarsi vellow ; mid and hind tibiae generallv much obscured bv black. 



