324 PR0CEEDIN08 OF THE NATIONAL MUSEUM. vol.43. 



Family HYSTRICIID.E. 



Sia^bfainily KRlSTElSTIIN^^gE. 

 ECUADORANA, ne-w genus. 



Runs into section Erigonem Braiier and Bergenstamm's tables, 

 and is evidently most allied therewith. Body short, broadened, 

 especially in female. Front tarsal joints of female widened and 

 flattened. Macrochsetse bristlelike, discal and marginal, female with 

 none on first two abdominal segments, or only a very atrophied 

 median marginal pair on second. Male with a discal and marginal 

 pair on intermediate segments. Oral margin produced noselike, 

 vibrisssD inserted far above same. Second antennal joint elongate, 

 third longer than second. Cheeks about five-sixths of eye-height 

 in female, two-thirds same in male. Front of male very narrowed 

 behind, at vertex one-half the width of that in female. Frontal bris- 

 tles descending to base of third antennal joint. Eyes thickly hairy. 

 Ocellar bristles very weak, but distinct in both sexes. Male without, 

 female with two orbital bristles. Proboscis rather short and fleshy. 

 Palpi well developed, elongate, moderately slender. Three post- 

 sutural and three sternopleural bristles. Long apical pair of straight 

 nondecussate scutellar bristles, three lateral pairs, and a shorter 

 discal pair. Apical crossvein strongly bowed in, forming nearly 

 right angle with fourth vein, latter in female continued in very short 

 stump, apical cell well open a little before tip of wing. Hind cross- 

 vein nearer apical crossvein. Claws of male elongate. 



Reproductive habit, probably leaf -larviposition of colored maggots. 



Type-species. — Ecuadorana hicolor, new species. 



The genus is named in honor of the Republic of Ecuador. 



ECUADORANA BICOLOR, new species. 



Length of body, 8 to 9 mm. ; of wing, 7 to 8 mm. The females are 

 the larger. One female and three males, Manchi, below Utuana, 

 in the Cordillera Occidental of southern Ecuador, about 7,500 feet, 

 November 22 to 26, 1910, on flowers of Baccharis fioribunda. 



Palpi yellowish; cheeks, parafacials, and facial plate silvery-cine- 

 reous pollinose; frontalia brown; parafrontals blackish to lower limit 

 of frontal bristles, where they abruptly give way to the silvery, but in 

 very oblique view they appear also silvery pollinose. First and 

 second antennal joints reddish-yellow, the third joint and arista 

 blackish. Thorax and scutellum brown, very thinly pollinose. 

 Abdomen yellowish-red; the median one-third of first segment in 

 female blackish, median one-half or more blackish in male; broad 

 median blackish patch on segments two to four, quite rectangular 

 in male, irregular in female. Venter and hypopygium wholly yel- 



