238 
Ohio Biological Survey 
KEY TO THE NEARCTIC SPECIES OF LEPTOSTYLA. 
1, Costal area of the elytra with a transverse, fuscous fascia just before the 
middle; first segment of the antennae twice as long as the second. 
L. clitoriae Heidemann 
Costal area of the elytra without a transverse fascia; first segment of the 
antennae three or slightly more than three times as long as the second.. 2 
2. Costal area of the elytra white, size small (length, 2.75 mm.; width, 1 mm.) 
L. oblonga Say 
Veins of costal area more or less embrowned; size larger (length, 3 mm.; 
width, 1 mm.). L. heidemanni n. sp. 
Leptostyla oblonga Say. 
Tingis oblonga Say, Journ. Acad. Sci. Phil., Vol. IV, p. 325; Compl. Writ., 
Vol. II, p. 248, 1859. 
This species can be distinguished from L. clitoriae Heid. by its larger 
size, the long acute spines on the head, the much longer first segment of 
the antennae, and the white costal area of the elytra. From L. heide¬ 
manni n. sp., it differs in its smaller size, white spines, and white costal 
area of the elytra; the costal area has one complete and a partial series of 
areolae about the middle. Length, 2.75 mm.; width, 1 mm. 
No specimens have been taken in the state; we have included it as a 
form that probably occurs here. 
Leptostyla heidemanni n. sp. 
Close to L. oblonga Say, but differing in the more swollen first seg¬ 
ment of the antennae, the four long acute spines on the head with black 
tips, and the costal area of the elytra has two almost complete series of 
areolae. 
Head short, with four long acute spines. Antennae rather long; first segment 
three times as long as the second; second segment very short; third very long; 
fourth segment swollen on the distal two-thirds. Rostrum reaching the middle 
of the mesosternum. Membranous pronotal margins moderately wide, recurved, 
converging anteriorly, with two series of areolae. Hood oval, considerably raised. 
Pronotal disc coarsely and regularly punctured. The three longitudinal carinae 
raised, each with a complete series of areolae. Elytra with three large areolae 
near the apex; costal area with one complete and another nearly complete series 
of areolae, very unevenly reticulated; subcostal and discoidal area closely and 
evenly reticulated; sutural area rather broad, unevenly reticulated. Length, 3 mm.; 
width, 1 mm. 
Color: Body black. First segment of the antennae fulvous; second and 
third segment yellowish; fourth segment fuscous, except proximal third yellowish. 
Legs yellowish; tarsi more or less embrowned. Disc of pronotum black. Mem¬ 
branous pronotal margins hyaline, a few nervures on inner humeral area brown. 
