50 Harry Scott Snuth 
Ranges across the entire state, specimens having been taken 
at Glen, Niobrara, and Lincoln. Flies during the month of Au- 
gust. Some specimens have the three apical segments of the 
abdomen entirely black, and most of them do not have the yellow 
on the pleura which is found in the typical specimens. 
Eucerceris bicolor Cresson. 
1881. Ewcerceris bicolor Cresson, Transactions of the American En- 
tomological Society, ix, p. xXxviii. 
Western portion of state—Glen and Benkelman, during July 
and August (L. Bruner, H. S. Smith). Easily recognized by 
the red and black abdomen. One specimen has the basal segment 
black. 
Eucerceris zonatus laticeps Cresson. 
1865. Eucerceris laticeps Cresson, Proceedings of the Entomological 
Society of Philadelphia, v, p. 107. 
Inhabits the entire state. Glen, August 20, 1906 (P. R. Jones, 
H. S. Smith) ; Lincoln, August, on Euphorbia marginata (W. D. 
Pierce). In structure very similar to the preceding species. 
Eucerceris rubripes Cresson. 
1879. Eucerceris rubripes Cresson, Transactions of the American En- 
tomological Society, vii, p. xxiii. 
Abundant in northwest Nebraska. Warbonnet canyon, Glen, 
Gordon, West Point, and Lincoln, June to August, taken at flow- 
ers of Petalostemon and Solidago spp. Many of the specimens 
lack the red on the sides of the metathorax. 
Eucerceris fulvipes Cresson. 
1865. Eucerceris fulvipes Cresson, Proceedings of the Entomological 
Society of Philadelphia, v, p. 111. 
Up to date this species has been taken only at Glen and War- 
bonnet canyon in Sioux county, during August, where it is abun- 
dant at flowers of Solidago and occasionally also on Melilotus. 
Superficially the male is very much like that of the preceding, 
but differs in having yellow spots on the cheeks and metathorax 
instead of rufous; also it has two oblique yellow marks on the 
metanotum. The females are quite different, both in structure 
of clypeus and in coloration, the females of the former usually 
having a red head, and a conical projection on the clypeus. 
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