84 IOWA STUDIES IN NATURAL HISTORY 
than in that species and with the humeri produced, either acute or spinose. 
Venter and legs also averaging paler. The ventral row of black spots is 
not so pronounced and in some specimens is reduced to a narrow longi- 
tudinal line on the last segment. 
This insect is more particularly southern in its distribution 
and but few specimens have been taken in the state. It was first 
recorded from Iowa by the writer in 1916 (1. c.). Six specimens 
are at hand from Iowa City and Solon. As with the preceding 
form, thickets along the edges of woods and fence rows seem to 
be the favorite haunts. All of the specimens have been taken in 
September from wild black raspberry (Rubus occidentalis 
Linn.). This is the smallest of our representatives of the genus 
Euschistus. 
Euschistus variolarius (Palisot de Beauvois) (PuatE I, Figure 
5, Puate II], Ficurr I, Puate IV, Figure 1, and Piate VI, 
FIGURE 4) 
1805. Pentatoma variolavia Pal. Beauv., Ins. Afr. Amer., 149, Hém., PI. 10, 
fig. 6. 
1825. ||\Pentatoma punctipes Say, Journ. Acad. Nat. Sci. Phila., IV, 314. 
1842. ||\Cimex sordidus Herrich-Schaeffer, Wanz. Ins., VI, 70, fig. 637. 
1842. ;Cimex ictericus Herrich-Schaeffer, Wanz. Ins., VI, 71, fig. 639. 
1844. ||Pentatoma sordidus Herrich-Schaeffer, Wanz. Ins., VII, 95. 
1844. ;~Pentatoma ictericus Herrich-Schaeffer, Wanz. Ins., VII, 95. 
1851. ||Huschistus punctipes Dallas, List Hem., I, 207. 
1859. ||Pentatoma punctipes Say, Compl. Writ., II, 241. 
1872. Euschistus variolarius Stal, Svensk. Vet. Handl., 10, no. 4, 26. 
1904. Euschistus variolarius Van Duzee, Trans. Am. Ent. Soc., XXX, 47. 
1905. Euschistus variolarius Forbes, Rept. Ent. Ills., XXIII, 195. 
General form ovate, robust. General color greenish yellow to light 
brownish with distinct but rather fine fuscous or black punctures. Head 
rather densely punctate, the lateral lobes sometimes slightly longer than, 
sometimes a little shorter than the median lobe; sinuation at sides of head 
before eyes not well marked; an oval, yellowish, impunctate area above 
the eyes. Antennae pale yellowish to reddish yellow, the apical portion of 
the fourth segment and the entire fifth segment fuscous or black; second 
segment shorter than third. Rostrum pale clay yellow, extending between 
posterior coxae. Pronotum more~finely punctate on anterior half, the 
antero-lateral margins pale, concavely arcuate and regularly dentate, the 
humeral angles more or less acute, almost spinose. Scutellum a little more 
densely punctate than pronotum, the apex slender, the extreme tip pale 
and scarcely or not at all punctate. Hemelytra punctured about like scu- 
tellum, the punctures more or less aggregated in places leaving irregular 
calloused areas between; embolium a little more finely and closely punc- 
tate than corium; membrane whitish, furnished with many orbicular 
brownish spots. Tergum blackish, the margins pale and extending slightly 
