PUINIVERSITY STUDIES 
VoL. XVII OCTOBER, 1917 No. 4 
NEW SPECIES OF SPHECOIDEA FROM THE CENTRAL 
AND: WESTERN STATES 
BY CLARENCE E. MICKEL 
LINCOLN, NEBRASKA 
The following descriptions of new species have been drawn 
from material collected for the most part in Nebraska and Cali- 
fornia but also including some from Wyoming, Colorado and 
North Dakota. <A large part of the material was collected dur- 
ing the seasons of 1916 and 1917. The types of all the species 
here described are in the entomological collection of the Univer- 
sity of Nebraska. 
Family SPHECIDAE 
Subfamily Nyssoninae 
Hoplisus corrugis sp. nov. 
6. Length io mm. Black with yellow markings. Head black; covered 
with sparse silvery pubescence; eyes strongly converging below; space 
between the eyes at the base of the clypeus about one fourth more than 
the median length of the clypeus; front very finely punctate with a median 
longitudinal impressed line from the anterior ocellus to the base of the 
antennae; ocelli situated on a slight prominence, the distance between the 
posterior ones greater than the distance between the lateral ocelli and 
the nearest eye margin; palpi, small basal spot on mandibles, labrum, 
clypeus, subraclypeal area, inner eye margins, scape and pedicel beneath, 
all yellow. Thorax black; covered with a very sparse silvery pile; shin- 
ing, very minutely punctured; mesepisterna shining, impunctate; suture 
between mesonotum and scutellum foveolate; propodeum with a deep 
median, longitudinal sulcus; enclosed space of propodeum triangular, 
coarsely sculptured but scarcely reticulate; posterior face of propodeum 
coarsely reticulate; lateral spots on pronotum, spot on mesepisterna be- 
neath the tegulae, and minute, median spot on the posterior margin of 
the scutellum, all lemon-yellow. Abdomen black, shining, with a sparse, 
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