68 IOWA STUDIES IN NATURAL HISTORY 
Genus TRICHOPEPLA Stal 
1867. TRrIcHOPEPLA Stal, Gifv. Vet. Ak. Forh., XXIV, 528. 
Seven species are described in the genus; all are found in the 
New World, six in North America and one in Central America. 
Two of the North American representatives have been recorded 
from Iowa. The others which have recently been described by 
Van Duzee are from California and Idaho. Diagnostic char- 
acters of the genus follow: 
Body pilose, dorsal surface with coarse black punctures more or less 
irregularly disposed. Sides of head nearly straight, slightly sinuate in 
front of eyes. Juga rounded at apex, not longer than tylus. Rostrum ex- 
tending to posterior coxae. Antennae short, first segment not reaching 
apex of head. Pronotum convex, deflexed anteriorly; lateral margins 
entire, slightly reflexed; lateral angles rounded. Apex of corium with a 
distinct but somewhat rounded lateral angle; veins of membrane simple. 
Ostiolar canal continued into a suleus which ends abruptly. 
Key to the species 
Antennae rufous, two apical segments only black; head nar- 
rowed at apex; rostrum at least attaming apex of posterior 
coxae; pronotum shorter, the sides oblique......... semivittata 
Antennae black, first segment only rufous; head broader at 
apex; rostrum not surpassing base of posterior coxae; pronotum 
longer, the sides less oblique. . 5275. .22 3.3 42— eee atricornis 
Trichopepla semivittata (Say) (Puate V, Ficure 7) 
1831. Pentatoma semivittata Say, Descr. Het. Hem., 9. 
1844. ||Pentatoma semivittatum Herrich-Schaeffer, Wanz. Ins., VII, 101, fig. 766. 
1851. {||Pentatoma pilipes Dallas, List Hem., I, 247. 
1859. Pentatoma semivittata Say, Compl. Writ., I, 322. 
1872. Trichopepla semivittata Stal, Svensk. Vet. Handl., 10, no. 4, 34. 
1876. Trichopepla semivittata Uhler, Bull. U. S. Geol. Geogr. Surv., II, 289. 
1880. Trichopepla semivittata Distant, B. C. A. Rhynch. Het., I, 64, Pl. 6, fig. 15. 
1904. Trichopepla semivittata Van Duzee, Trans. Am. Ent. Soc., XXX, 34. 
General form ovate, broadest behind the middle, more or less pointed 
anteriorly. General color pale clay yellow with numerous large black 
punctures and with numerous fine, short, erect, yellowish white hairs most 
abundant on head and prothorax. Head elongate, densely punctured, 
black with a median and two lateral pale vittae which are sparsely or not 
at all punctured; apex slightly emarginate the median lobe higher than 
lateral lobes, its apex more or less reddish; lateral margins black, densely 
punctate. Rostrum pale with median line and apical segment black. An- 
tennae with the three basal segments yellowish to rufous with the two 
apical segments black. Pronotum closely, strongly punctate anteriorly, the 
punctures on disk and posterior part more sparse and irregularly placed; 
three pale vittae continuous with those on the head become obsolete pos- 
