ART. 3. DROSOPHILID TWO-WINGED FLIES MALLOCH. 7 



distinguish it from the species of ^tegana^ but some species of Leuco- 

 phenga have the interfrontalia more or less hairy. Tlie hitter are 

 distinguished, however, by the widely open first posterior cell of the 

 wing, the fourth vein being not or vQYy little bent forward at its 

 apex, and much Aveaker on its last section than the other veins, I 

 incline to the retention of Orthostegana as a good subgenus. 



The absence of the pleural vitta is a very good superficial charactei" 

 for the recognition of this species. 



Originally described from Bolivia. One female, Higuito, S;in 

 Mateo, Costa Rica (P. Schild). 



STEGANA BRUI'TOEA Malloch. 



Female.— Head testaceous yellow; ocellar spot and apex of third 

 untennal segment black; upper occiput fuscous. Thorax brownish 

 yellow, darker posteriorly; disk of scutellum brown; upper pleural 

 vitta deep black, loAver one absent. Abdomen dark brown. Legs 

 yellow, apices of fore femora on anterior side, and a large mark on 

 interior side of mid femora dark brown, hind femora and mid and 

 hind tibiae faintly or not at all mai'ked with broAvn. Wings brown, 

 paler posteriorly. Haiteres yellow. 



Eye much higher than long; cheek about half as high as width of 

 third antennal segment; face with a low sharp carina on upper half 

 in center; antennae extending to mouth. Humeri with one bristle. 

 Fore tarsi slightly compressed. Inner cross-vein a little in front of 

 middle of discal cell. 



Length, 2 mm. 



Type and two paraiy})es, Higuito. San M;iteo, Costa Rica (P. 

 Schild). 



Typr.—Femah, Cat. No. 26676, U.S.N.M. 



STEGANA AFFINIS Malloch. 



Male. — -Head testaceous yellow, ocellar spot, a transverse line above 

 mouth, and the third antennal segment black. Mesonotum brownish 

 yelloAv, darker on sides; disk of scutellum brown; upper pleural 

 vitta complete, lower one present only on sternopleura. Abdomen 

 dark brown. Legs yellow, fore femora at apices on anterior side, 

 fore tibiae on most of apical half, mid and hind femora except bases 

 broAvn, tibiae of mid and hind legs hardly darkened basallj^ Wings 

 brown, paler posteriorly. Haiteres brown. 



Eye as high as long; cheek at least half as high as width of third 

 ;intenual segment; antennae extending to mouth. Thorax and wing 

 as in last species. 



Length, 2.5 mm. 



TN^pe, Higuito, San Mateo, Costa Rica (P. Schild). 



rl'pe.—^Me, Cat, No. 26677, U.S.N.M. 



