J. R. MALLOCII 281 



Phaonia diruta (Stein) 



Sphiliga.sUr diruta Stein, Berl. ent. Zeitschr., 1897, p. ISS. 



I have before me, l^esides the defective type male, several 

 specimens of l)oth sexes of this species. It superficially ro- 

 sem])les/;7.sca, ])ut is much smaller. The cross- veins of the wings 

 are not noticeably infuscated and the structural differences 

 pointed out in the key to species will serve to distinguish it 

 from its closest allies. 



Length, 5 to 6.5 mm. 



The type was taken at Manayunk, Pennsylvania. Specimens 

 before me are from Cumberland Count}', Xew Jersey and 

 Lafayette, Lidiana. 



Phaonia prisca Stein 



Phaonia prif;ca Stein, Arch, fiir Xaturges., 1918, abt. A, heft 9, p. 14, 1920. 



Male. — Black, slightly shining, den.sely gray pruinescent. Orbits, face, 

 cheeks, and parafacials with silver}- tomentum; antennae yellow, third segment 

 l)rownish fuscous; palpi fuscous. Thorax rather indistinctly vittate. Ab- 

 <]omen with a linear dorsocentral black vitta, fifth sternite largely yellowish. 

 I,egs entirely yellow, tarsi slightly darkened. Wings hyaline, veins yellow. 

 Calyptrae and halteres yellow. 



E\-es almost bare; narrowest part of frons a little wider than distance 

 across posterior ocelli; orbits broad, obscuring the interfrontaha for the 

 greater part of its length, bristles only on the anterior half; parafacial at base 

 of antennae as wide as third antennal segment, slighth- narrowed below; 

 cheek a little less than twice as high as widest part of parafacial with a series 

 of rather widely spaced long bristles along the lower margin, some hairs above 

 lliem posteriorly and two bristles anteriorh' which are upwardly curved 

 <i\g. 18); third antennal .segment about twice as long as second; arista with its 

 longest hairs about as long as width of third antennal segment; palpi normal. 

 Thorax without distinct presutural acrostichals, the hairs sparse; postsutural 

 <l()rsocentrals three; prealar over half as long as the bristle behind it; hypo- 

 pleura bare. Abdomen ovate; basal sternite bare. Fore tibia without a 

 median po.sterior bristle; fore tarsus a httle longer than tibia, without long 

 sensory hairs along posterior side of basal segment; mid femur with four or 

 five long bristles on basal half of postero ventral surface; mid tibia with four 

 or five posterior bristles which are not equal in length; hind femur with an 

 almost complete series of anteroventral and posteroventral bristles, those of 

 the latter series weak apically; hind tibia with one anterodorsal and three or 

 four anteroventral bristles, the anterior and jxjsterior surfaces with some erect 

 setulae. Outer cross-vein sUghth' curved. 



Length, 7 mm. 



Originally described from one male from Ithaca, New York. 

 I have before me a male from the same locality. 



TRAX.S. AM. EXT. SOC, XLVHI. 



