NEW MUSCOID FUES FROM THE ANDEAN MONTANYA 89 



equal vittae well defined, especially in front of suture. Disk and apex 

 of scutellum noticeably paler. Abdomen same deep yellowish-red as in 

 C. cornutum, with faint suggestions of silvery pollen showing thickly on 

 median line of anal segment anteriorly. Wings and tegulae scune in col- 

 oration as in C. cornutum, the alulae clear on anterior half and smoky on 

 posterior half. Proboscis reddish, a little darker than the legs. 



Epalpellus, new genus. 



General characters of Eucorpulentosoma, but the abdomen and 

 abdominal macrochaetae on the plan of Corpulentosoma, the disk of scu- 

 tellum densely set with subspinelike macrochaetae, the ventral plates wath 

 only bristles, and arista not geniculate. Epistoma moderately produced. 

 Width of male front at vertex about one and one-fourth times eye-width, 

 the width anteriorly fully one and one-half times eye-width. Second 

 antennal joint weakly elongate, third joint elongate-rounded and about 

 twice as long as second ; second ciristal joint long. Proboscis but little 

 longer than head-height. No palpi nor palpal bristlets. Cheeks more 

 than one-half eye-height. 



Three stemopleural bristles, three postsutural, one postacrostichal, no 

 pre-acrostichai. Besides the erect subspinelike discal macrochaetae the 

 scutellum has two long lateral pairs and a weak strongly divergent apical 

 pair. Abdomen shaped like that of Corpulentosoma, swollen quite the 

 same, and macrochaetae both of same nature and disposed very similarly ; 

 third segment having two transverse rows across posterior half with a few 

 more at sides, second segment with about three irregular transverse rows 

 and a few additional ones, and anal segment covered except broad ante- 

 rior margin. Apical cell well open but narrowed for some distance ter- 

 minally, the fourth vein continued in slight stump beyond origin of apical 

 cross vein. Claws quite elongate, rather longer than last tarsal joint. 



Reproductive habit, probably larviposition of colored maggots. 



Type, Epalpellus corpulentus, new species. 



Epalpellus corpulentus, new species. 



Length of body, 8 mm. ; same to end of spines, 9.5 mm. ; of wing, 8 

 mm. One male, Uruhuasi Bridge, San Gaban Canyon, about 6,500 

 feet, Februciry 3, 1 9 I 0, on flowers of Baccharis sp. 



Coloration differs from description of Corpulentosoma cornutum as fol- 

 lows : Occiput silvery below, cinereous above ; antennae and arista brown 

 rather than black. Cheek pile gray like the occipital pile. Pleurae dark. 



