224 
IOWA ACADEMY OF SCIENCES. 
Vertex nearly flat, one-half wider than long, shorter than pronotum, 
obtusely angled before, margin obtuse; front one-third longer than wide, 
width on clypeus more than half that at ocelli; clypeus narrow, nearly 
parallel margined; lorse large, wdder than clypeus; pronotum more than 
three times wider than long, obtusely rounding before; side margins, one- 
half the length of the eyes; elytra occurring in two lengths, a short form 
in which the apical cells are minute, reaching only to the penultimate seg- 
ment, this usually associated with rudimentary wings, the long-winged 
form with fully developed apical cells elytra exceeding the abdomen and 
associated with fully developed wings; venation simple, inner branch of 
first sector forked near its middle, making one more anteapical cell than 
in comma; four terminal and two costal cells. 
Color: Clear, creamy white with testaceous and black markings as fol- 
lows: Four quadrate spots on the anterior margin of vertex, the outer pair 
between the eyes and ocelli, two large round spots near the base of the 
vertex and a smaller irregular pair on the disk midway between these and 
the inner marginal pair, black; a small black spot under the base of the 
antennas, four equidistant dark brown or black stripes on the pronotum, the 
inner pair extending across the scutellum; a small dash behind the eye and 
a stripe just under the lateral margin of pronotum, black; elytra with eight 
brown stripes, a complete longitudinal stripe just outside the first sector 
and another next the claval suture, a narrow stripe between the branches 
of the first sector, a shorter one between branches of its inner fork, a broadly 
interrupted one between the first and second sectors, a complete median 
stripe on the clavus, one on the outer, apical half and another on the inner, 
basal half. The apical cells and the apex of the anteapicals, fuscous mar- 
gined. Tergum with four black lines posteriorly; pygofers with two round 
black spots above; connexivum broadly margined on the outside, narrowly 
on the inside, with black; legs lined and spotted with black. 
Genitalia: Ultimate ventral segment of the female with the posterior 
margin angularly excavated; apex of excavation truncate, sharply notched, 
black; lateral angles acute; male valve narrow, apex rounding, one-half 
longer than the ultimate segment; plates slightly broader than valve at 
base, narrowing to the middle, then parallel margined to the broad trun- 
cate apex, twice the length of the valve, equaling the pygofers; pygofers 
with the side margins compressed below, an oblique black mark just back 
of the margin beneath. Described from numerous specimens collected at 
Ames, Iowa. 
Readily separated from comma by the additional fork of the 
first sector, the spots on the disk of the vertex and the number 
of stripes on the elytra. Superficially it so closely resembles 
that species that hitherto specimens have been confused with 
those of that species. 
Larvae very broad, stout forms; head large, resembling the adult; ver- 
tex slightly more pointed; color creamy white, with four brown stripes as 
follows: An inner parallel pair arising from distinct spots on the apical 
margin of the vertex and extending to the tip of the abdomen on either 
side, a pair just inside the margin of the body arising behind the eyes and 
terminating before the last abdominal segment. 
