14 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 70 



EUMYIOLEPTA BRAZIUANA. new Bp«cies 



Male. — A rather small dark species with scalelike vestiture only 

 on the thorax. Eyes contiguous ; ocellar triangle small, shining black ; 

 frontal triangle shining brown, bordered with silvery pollen; an- 

 tennae moderate, reddish yellow; arista darker; face tuberculate, a 

 median longitudinal shining stripe; sides silvery poUinose, jowls 

 shining ; thorax dark brown, the scales sparse, whitish ; legs yellowish 

 brown, all the femora spinose beneath ; abdomen dark brown, second 

 and third tergites each with a pair of brownish lateral spots ; wings 

 subhyaline, a faint cloud on anterior border near the apex; apical 

 cross vein twice angled with short spurs at the apices of the angles ; 

 posterior cross vein with an inward angle at its middle, which is also 

 spurred ; petiole beyond anal cell unusually long, nearly equal to the 

 section of fifth vein preceding it; spurious vein absent; halteres 

 bright yellow ; plumula present. Length, 5 mm. ; wing, 5 mm. 



One specimen. 



Type locality. — Theresopolis, Brazil (November 30, 1887). 



Type — In British Museum. 



Subfamily Eristalinae 



Genus QUICHUANA Knab 



Quichuana Knab, Ins. Ins. Mens., vol. 1, 1913, p. 13. — Shannon, Proc. Ent. 

 Soc. Wash., vol. 27, 1925, p. 111. 



Genotype. — Quichuana sylvicola Knab. 



The genus Quichuana was erected by Knab to contain two new 

 species of Neotropical Syrphidae. Knab also stated his belief that 

 %Mallota cJiampioni Williston belonged here too. 



Later investigations indicate that this genus is a natural and fairly 

 large one and apparently confined to the neotropic region. The 

 writer early in 1925 described two new species and during the sum- 

 mer of the same year saw five additional species, including 'iMallofa 

 chaTnpioni Williston, in various European collections. Each of these 

 five species has been described under a different generic name. 



A list of the species is here appended together with some of the 

 outstanding characteristics. Most of these species are very closely 

 related, and in order to work out a synoptic key for them one should 

 have specimens at hand. 



Quichuana sylvicola Knab, Ins. Ins. Mens., vol. 1, 1913, p. 14 (type in 



U.S.N.M.). 

 Quichuana picadoi Knab, Ins. Ins. Mens., vol. 1, 1913, p. 14 (In U.S.N.M.). 

 Quichuana inca Shannon, Proc. Ent. Soc. Wash., vol. 27, 1925, p. Ill (In 



U.S.N.M.). 

 Quichuana calathea Shannon, Proc. Ent. Soc. Wash., vol. 27, 1925, p. Ill 



(In U.S.N.M.). 

 Quichuana knahi, new species, described below. (In U.S.N.M.) 



