SUBFAMILY III. — ORTHOTYLIN^. 803 



Honesdale, Pa., Sept. 10 (Olsen). Described from Arizona. 

 Recorded from New England, Pennsylvania and Michigan. 



II. Strongylocoris Blanchard, 1840, 140. 



Elongate-oval, glabrous, shining species having the vertex 

 flattened, minutely punctate ; pronotum about twice as wide at 

 base as long, its posterior portion convex, not strongly declivent, 

 hind angles obtusely rounded; scutellum triangular, subtecti- 

 form, finely strigose ; elytra entire, surpassing abdomen, clavus 

 with sides strongly declivent, cuneus and membrane also de- 

 clivent, the fracture weak. Two of the five recognized North 

 American species occur in our territory. 



KEY TO EASTERN SPECIES OF STRONGYLOCORIS. 



a. Second antennal of female a fifth longer than width of head across 



eyes; legs in part pale. 843. stygicus. 



aa. Second antennal of female not longer than width of head across 



eyes ; legs, except tips of femora and base of tarsi, dark brown to 



black. 844. atratus. 



843 (1123). Strongylocoris stygicus (Say), 1832, 24; I, 344. 



Elongate- or oblong-oval. Black, moderately shining; cuneus pice- 

 ous, membrane dark brown; tibia?, tips of femora, joints 1 and 2 of tarsi 

 and basal half of trochanters dull yellow. Joint 1 of antenna? dull yel- 

 low, its length less than half the width of vertex, its basal fifth black, 

 female, wholly black, male; 2 with extreme apex and base blackish, middle 

 dull yellow, female, wholly fuscous, male; 3 and 4 fuscous, paler at base, 

 3 three-fifths the length of 2, twice as long as 4. Pronotum and elytra 

 densely minutely rugose-punctate, calli prominent, almost smooth. "Dex- 

 tral male clasper with median angle produced in a long tooth, thus form- 

 ing a semicircle with the incurved angle of the fan-shaped apex." (Van 

 D.) . Length, 4.3 — 5 mm. 



Frequent throughout Indiana, May 24 — Sept. 15. Occurs on 

 the great ragweed, Ambrosia trifida L., and Virginia creeper, in 

 alluvial soil along streams and on grasses and low herbage in 

 dense woodland. Ashland, Mass., May 2 (Frost) . Ranges from 

 Quebec and New England west to the Pacific and southwest to 

 North Carolina and New Mexico. Breeds on goldenrod and 

 probably on wild sunflower and other Composite. 



844 (1124). Strongylocoris atratus (Uhler), 1894, 268. 



Form and size of stygicus. Black, more strongly shining; membrane 

 dark fuscous-brown, the edge near tip of cuneus slightly paler; antennas 

 black or blackish-brown, the incisures alone paler; legs black, tibia? dark 

 brown, knees, tips of coxa? and basal joint of tarsi tinged with yellow. 

 "Dextral male clasper with median angle obtuse or produced in a short 



