TAXONOMY OF MUSCOIDEAN FUFS — TOWNSEND 131 



EUACAULONA, gen. nov. 



Differs from Acaulona in having somewhat more than costal half 

 of wings pronounced fuscous, the rest of wing not being clearly 

 hyaline, but more or less so, the fuscous rather gradually fading out 

 on inner border. There are also two distinct grayish or milky vittae 

 on wings (male), one between the first and second veins, one be- 

 tween the third and fourth veins, besides a short one in front of the 

 auxiliary vein. Tegulse brownish or fuscous, paler in middle. 



The front at vertex is nearly as wide as either eye, and gradually 

 widens anteriorly to almost width of both eyes as viewed from in 

 front, the face in same view being fully three-fifths width of head. 

 The frontalia are very wide, of equal width, as wide as front at 

 vertex. 



Apical cell closed in margin. Hind tibiae not ciliate, bearing only. 

 a row of short appressed bristles with one or two stronger bristles 

 among them. Claws of male elongate. Abdomen of male flattened. 

 Type, the following species : 



Euacaulona sumichrasti, sp. nov. 



One male, Tehuantepec, Sumichrast. Length, 9.5 mm. 



Blackish, the venter and basal half of femora, also base of hind 

 tibiae, yellow ; the usual golden yellow markings on prothorax along 

 and in front of suture, also extending posteriorly on the sides and 

 along the scutellar suture. Frontalia black, the narrow parafrontals 

 and all of face and cheeks golden yellow. Thorax, scutellum, and 

 abdomen above brown or blackish. 



Type.— Cat. No. 10,879, U. S. N. M. 



Genus Homogenia van der Wulp 



Syn. Trichopododes Townsend. 



This genus has the wings wholly infuscate, those of male with 

 considerable luteous and more or less of a milky bloom (latipennis 

 and nigroscntellata) ; female not known. Hind femora not ciliate 

 at all, hind tibiae only weakly ciliate. Apical cell open. Tegulae 

 yellowish. Type, H. latipennis van der Wulp. The species rufipes 

 van der Wulp evidently does not belong with the other two described 

 under the genus, and will have to be separated generically. 



H. latipennis van der Wulp. — One male, Tehuantepec, Sumichrast. 

 Labeled "Trichopoda luteipennis Wd." This specimen agrees with 

 van der Wulp's description except that there is no trace of a black 



