228 
Ohio Biological Survey 
posterior portion globose. Membranous pronotal margins broad, kidney-shaped, 
bullate about the middle, slightly raised at the anterior and posterior margins, 
Pronotum and base of triangular process distinctly and quite regularly punctured. 
Apex of triangular process reticulated; the sides feebly raised anteriorly, with a 
few areolae. Length, 3.1 mm.; width, 1.6 mm. 
Color: Antennae yellowish; fourth segment brownish. Legs yellowish; tips 
of tarsi brownish. Hood hyaline, with one or two dorsal nervures more or less 
embrowned. Membranous pronotal margins hyaline, sometimes one or two areolae 
brown. Pronotum yellowish-brown. Elytra hyaline, with a band near the base, 
tumid elevation, and more or less of a band near posterior end fuscous. 
A common species found feeding on oak and the leaves show whitish 
or yellowish-brown patches from their attacks. This species is quite 
variable in color. We have specimens with the hood, membranous pro¬ 
notal margins, and the posterior portion of the elytra almost entirely 
hyaline. 
No doubt common thruout the state. We have numerous examples 
from Columbus and Athens. 
Corythucha pergandei Heidemann (Figs. 4 and 5). 
Corythucha pergandei Heid., Proc. Ent. Soc., Wash., Vol. VIII, p. 10. 
Antennae slender, the basal segment twice as long as the second. Rostrum 
reaching the meso-metasternal suture. Pronotal hood considerably raised, ab¬ 
ruptly constricted about the middle; posterior portion globose, widely reticulated; 
anterior portion triangular, more closely reticulated. Membranous pronotal mar¬ 
gins evenly reticulated, reniform, bullate about the middle, slightly raised at the 
anterior and posterior margins. Pronotum and base of triangular process deeply 
Pig. 4. Corythucha pergandei Heidemann, adult (after Heidemann). 
punctured, the latter with the sides feebly raised anteriorly (a few distinct 
areolae) and with the apex irregularly reticulated. Median carina moderately 
raised, with five or six areolae and sometimes two additional ones formed by a 
