1949] 
W erner — Epicauta 
107 
Head suboval, widest just behind the eyes, broadly 
rounded behind, with the posterior margin straight in 
front view, excavated when seen from above. Seen in 
side view, the occiput appears bulged. Surface densely 
punctured except along the narrowly denuded midline. 
Antennal calluses small, denuded. Median impressed 
line distinct down to the level of the eyes. Eyes fairly 
prominent, rather narrow (.47 times as wide as long), 
transverse. Antennae reaching to the middle of the 
elytra in the male, two and two-thirds as long as an an- 
terior tibia, slightly shorter in the female, two and one- 
half times as long as an anterior tibia, slender, almost 
uniform in thickness, slightly thicker in the male than in 
the female. First segment reaching halfway across the 
eye, the stoutest segment; second .55 times as long as 
first; third as long as first; fourth and following sub- 
equal, three-fourths as long as third. The first three 
segments have some pale pubescence. 
Pronotum broadly campanulate, slightly longer than 
broad, densely clothed on the disc with short erect 
pubescence. This pubescence is composed of short, 
swollen but pointed hairs which are circular in cross- 
section. E. wheeleri Horn has similar discal pubes- 
cence, E. rileyi and E. rehni similar but much more slen- 
der. The midline and an oblique area from the anterior 
angles to the middle somewhat elevated. Elytra with 
a small scutellar black spot which may be reduced to a 
few hairs. Abdominal sternites of male with a denuded 
spot on the midline posteriorly, with only a few short 
black hairs and setae present on them. Middle and pos- 
terior trochanters, femora and tibiae of male flattened 
and broadly denuded behind, fringed above with long 
pale pubescence. The corresponding edge . of the an- 
terior trochanters and femora also denuded but not 
fringed with long hairs. Anterior tibial spurs of male 
slightly shortened, the first tarsal segment a little thick- 
ened. Posterior tibial spurs slender, sticklike. Tips 
of femora and tibiae and all but base of tarsi with black 
pubescence. 
Holotype: c? 20 mi. N. of Mesquital, Lower California 
