220 
Ohio Biological Survey 
Slender insects; elytra narrow, shorter, the outer margin more or less 
constricted about the middle, hairs on outer margin wanting. 
Genus Leptostyla Stal 
8. Membranous pronotal margins not expanded.Genus Leptophya Stal 
IMenibranous pronotal margins reflected vertically; or reflected more or less 
against the dorsal surface of the pronotum . 9 
9. Reflected pronotal margins very broad, broadly rounded, touching or 
nearly touching the outer carinae.Genus Physatochila Fieber 
Reflected pronotal margins very narrow, subquadrate. 10 
10. Subcostal, discoidal, and sutural areas undifferentiated; body very thick; 
antenniferous tubercles very large.Genus Alveotingis n. gen. 
Subcostal, discoidal, and sutural areas distinct; antenniferous tubercles 
much smaller . 11 
11. Antennae contiguous at the base; elytra broadly rounded at the apex. 
Genus Teleonemia Costa. 
Antennae not contiguous at the base; elytra greatly narrowed or obliquely 
rounded at the apex.Genus Melanorhopala Stal. 
Genus Acalypta Westwood. 
Acalypta Westwood, Mod. Class. Ins., Vol. II, Syn. Gen., p. 121, 1840. 
Acalypta Stal, Enum. Hemipt., Band. II, p. 118, 1873. 
Antennae moderately long, rather stout; first segment swollen, 
longer than the second; second segment less swollen, short; third seg¬ 
ment very long, slender; fourth segment fusiform. Pronotum tricari- 
nate; rather closely reticulated; hood small, covering the base of the 
head; lateral margins expanded, subquadrate. Costal area narrow, 
coarsely reticulated, with one complete or with one complete and a par¬ 
tial series of areolae; subcostal area closely reticulated, much narrowed 
behind; discoidal area rather wide, extending beyond the middle of the 
elytra; sutural area (hrachypterous form) with the inner margin straight, 
narrow. In the macropterous form the sutural area is broad with the in¬ 
ner margin rounded. 
KEY TO THE SPECIES OF ACALYPTA. 
Costal area of the elytra with one complete and the greater part of a second 
series of areolae . A. thoinsonii Stal 
Costal area with a single series of areolae, or uniseriate in greater part 
(Figs. 1 and 2). A. UUianis Bueno 
Acalypta thomsonii Stal. 
Acalypta thomsonii Stal, Enum. Hemipt., Band. HI, p. 122, 1873. 
Acalypta thomsonii Bueno, Bull. Brook. Ent. Soc., Vol. XI, p. 39. 
Head armed with two rather stout, blunt porrect spines—one on each side 
of the median line just above the antennae. Rostrum reaching almost to the end of 
the first abdominal segment. Antennae rather stout, beset with a few short hairs; 
first segment considerably swollen, about twice the length of the second; second 
