SUBFAMILY I. — PENTATOMIN^]. 



137 



88b (125a). Euschistus tristigmus pyrrhocerus (Herrich-SchaefFer), 

 1842, 71. 



Females similar in form to those of tristigmus, the males a little 

 smaller, narrower and more elongate. Color much the same, the general 

 hue a little more fuscous, the white calloused spots of pronotum and 

 scutellum less transverse and more distinct, the antennae with all the 

 joints reddish-yellow; under surface and legs dull white instead of yel- 

 low. Ventrals 3 and 4 with black spots more often lacking, 5 and 6 with 

 the spots smaller and more oblong. Differs mainly in the form of the 

 humeral angles of pronotum, these being longer, narrower, more in- 

 clined upward and backward, with tips acute or distinctly spinose. 

 Length, 9 — 10 mm.; width, 6 — 7 mm. 



Marion, Knox, Crawford and Posey counties, Ind., April 20 — 

 Sept. 24 ; not taken north of the middle of the State. Dunedin, 

 and Sanford, Fla., March 12 — 30, mating on the former date. 

 This, the southern race or variety of tristigmus, has its main 

 distribution over the eastern United States south of latitude 

 38 degrees, or from Virginia west and south to Oklahoma, 

 Louisiana, Texas and Mexico, but occurs as far north as cen- 

 tral Indiana, central Illinois and southern Iowa. In southern 

 Indiana it is most common in July and August, when it is found 

 on tall weeds and grasses in alluvial soils along the larger 

 streams and the borders of ponds and marshes. 



89 (126). Euschistus variolarius (Palisot de Beauvois), 1805, 149. 



Males elongate-oval, females more broadly so, surface subdepressed 

 above, convex beneath. Above grayish- or greenish-yellow, marked with 



numerous rather sparsely placed, 

 fuscous punctures ; edge of side 

 margins of thorax and extreme tip 

 of scutellum yellow; antennae red- 

 dish-yellow, the fifth joint and 

 apical half of fourth, black or fus- 



Xcous; membrane pale brown with 

 vague rounded fuscous spots; un- 

 der surface greenish-yellow; legs 

 brighter yellow, necked with small 

 brownish dots; spiracle rings 

 white; genital segment of male 

 with a large rounded black " spot 

 at middle of base. Head longer 

 than wide, its apex rounded ; cheeks 

 slightly concave, equalling or 

 scarcely reaching tip of tylus. 

 Pronotum with side margins very 



^\ 



X 4. (Alter Hart & Malloch I 



