218 
Ohio Biological Survey 
Pronotum not produced posteriorly; ocelli present; hemielytra with a distinct 
membrane, the rest reticulately punctate.Family Piesmidae 
Family Piesmidae. 
Head short and broad; juga free, longer than the tylus, produced 
before the apex of the head. Rostrum consisting of four segments. 
Eyes small, prominent; ocelli present, inserted close to the margins of 
the prothorax. Legs short; tarsi consisting of two segments. Hemi¬ 
elytra with a distinct non-reticulate membrane. 
This family contains only one Nearctic genus. 
Genus Piesma Lepelletier et Serville. 
Piesma Lepelletier et Serville, Encycl, Method. X, p. 653, 1825. 
Zosmenus Laporte, Essai class, syst. des Hemipt, p. 49, 1832. 
Aspidotoma Curtis, Entomol. Magaz., I, p. 196, 1833. 
Zosmerus Douglas et Scott, Brit. Hem.-Het., p. 237, 1865. 
Piesma Stal, Enum. Hemipt., Ill, p. 115, 1873. 
Head short, broad, deflected. Antennae short; first segment strongly 
swollen, with a short petiole; second segment shorter than the first, less 
swollen; third segment longer than the first and second conjoined; 
fourth segment stout, longer than the first, fusiform. Ocelli small, in¬ 
serted close to the posterior margin of the head. Legs short; tarsi 
composed of two segments; claws short, curved. Scutellum small, 
triangular. Hemielytra as long as the abdomen, with a distinct non- 
reticulate membrane at the apex, the rest reticulately punctate. 
The genus contains only one described American species. 
Piesma cinerea Say (Plate X, fig. a). 
Tingis cinerea Say, Descr. Heteropt. Hemipt., p. 26, 1832; Compl. Writ., Vol. I, 
p. 349, 1859. 
Piesma cinerea Stal,, Enum. Hemipt., Band. HI, p. 116, 1873. 
Piesma cinerea Comstock, Intro. Entom., p. 204, 1888. 
Piesma cinerea Summers, Bull. Agr. Exp. Stat. Tenn., Vol. IV, No. 3, p. 90, 
1891. 
This species is commonly known as the “ash-gray’’ leaf bug. Ac¬ 
cording to Prof. Summers it often does a considerable amount of damage 
to the leaves and flowers of grapes. 
Head with a short, stout spine between the antennae and eyes. Antennae 
short; first segment strongly swollen, abruptly smaller at the base, longer than the 
second; second segment short, less swollen; fourth segment swollen towards the 
apex, beset with a few short hairs. Rostrum reaching slightly beyond the first 
pair of coxae. Pronotum with four elevated lines, obsolete behind. Length, 2.9 
mm; width, about 1.2 mm. 
