206 



FAMILY V. — PENTATOMID^E. 



relatively more narrowed in front, the cheeks more deeply 

 sinuate in front of eyes ; pronotum with humeri not emarginate 

 or concave behind the angles, the posterior side margins 

 straight ; scutellum much narrower toward apex, the latter less 

 than one-third the width of corium. Female with basal genital 

 plates subtriangular not longer than wide. Three species are 

 known from the United States, two of which occur in our 

 territory. 



KEY TO EASTERN SPECIES OF ELASMOSTETHUS. 



((. Antennae pale, the apical joint dusky; humeral angles pale. 



147. CRUCIATUS. 



aa. Antenna? piceous or black throughout; humeral angles black. 



148. ATRICORNIS. 



148. (204). Elasmostethus cruciatus (Say), 1831, 2; I, 311. 



Elongate-oval, subdepressed above, convex beneath. Above greenish- 

 yellow, bases of pronotum and scutellum and a 

 broad stripe along inner margin and apex of 

 elytra, dull red; under surface and legs dull yel- 

 low; tarsi and tip of beak fuscous, the acute 

 strongly projecting angles of sixth ventral red- 

 dish-brown. Head as long as broad, strongly 

 tapering; cheeks with a few coarse punctures 

 near base. Pronotum very sparsely, unevenly 

 marked with coarse reddish-brown or fuscous 

 punctures. Scutellum evenly and more closely 

 marked with similar punctures. Elytra more 

 finely, closely and evenly punctate. Abdomen 

 smooth or very minutely rugose; pro-thoracic 

 pleura coarsely and rather closely punctate. 

 Other characters as in key and under generic 

 heading. Length, 10 — 11 mm.; width, 5.5 — 6 

 mm. (Fig. 40). 



Fig. 40, X 3. 

 (After Lugger). 



Adirondack Mountains, N. Y., July 6 — Aug. 29 (Denis). Lake 

 Superior (///. Nat. J list. Surv. Coll.). Ranges from Quebec and 

 New England west to the Pacific and south to North Carolina 

 and New Mexico. Nothing has been recorded regarding its 

 habits, though it appears to frequent more mountainous 

 regions and higher altitudes than does /:. atricornis. Say states 

 that "when the hemelytra are at rest their sanguineous mar- 

 gins represent a common cross," whence the specific name 

 which he bestowed upon it. Hart records one specimen from 

 northern Illinois, but no members of the subfamily are men- 

 tioned by Zimmer or Stoner from Nebraska or Iowa. 



