724 FAMILY XXIX. — MIRID^E. 



727 ( — ). Phytocoris cortitectus Knight, 1920, 55. 



"Very similar to eximius; pale parts of hemelytra more translucent, 

 infuscations paler; front of head transversely striate with fuscous each 

 side of median line; second antennal more uniformly fuscous but with 

 a pale reflection throughout the infuscation; genital claspers and flagel- 

 lum of male as in fig. 11. Length, 6 mm." (Knight). 



Recorded only from Glen House, N. Hamp. and Batavia, 

 N. Y., where it was found in late July in the crevices of the 

 bark of elm. 



Group IV. — Phytocoris. 



In this group the membrane is sometimes marbled but not 

 flecked with pale spots, the antennae are more pale than black- 

 ish with basal joint longer than width of head and the general 

 color is usually yellowish to reddish over a paler background. 

 It corresponds to Knight's Group IV and comprises twelve of 

 our eastern species. 



KEY TO EASTERN SPECIES OF GROUP IV, PHYTOCORIS. 



a. Disk of pronotum frequently in part or wholly red but without four 

 distinct reddish stripes on a pale background. 

 b. Pronotal disk with four to six black spots on basal submargin', 

 these often vague or sometimes wanting; scutellum usually uni- 

 formly pale, rarely with a fuscous spot each side on apical half. 



728. QUERCICOLA. 



bb. Pronotal disk without trace of black spots on basal submargin; 

 scutellum usually with orange or red each side on apical half. 

 c. Pronotum chiefly red, more red than pale or fuscous. 



d. Elytra with distinct yellowish dots or spots ; calli darkened with 



fusCOUS. 729. CONFLUENS. 



dd. Elytra nearly a uniform deep orange-red without pale spots ; 

 calli wholly pale. 737. (male) puella. 



cc. Pronotum with more pale or fuscous than red. 



e. Scutellum uniformly pale or bright yellow. 



/. Pronotum and elytra chiefly bright yellow, the former with an 

 orange stripe projecting backward along outer margin of 

 callus; scutellum bright yellow. 730. luteolus. 



ff. Pronotum and elytra pale brownish-yellow, the former with- 

 out orange stripes; scutellum pale whitish yellow. 



731. ANGUSTIFRONS. 



ee. Scutellum with an orange or reddish mark each side of median 

 line. 

 </. Disk of pronotum with basal and side margins dark fusco-red- 

 dish; scutellum yellow with a red mark each side on apical 

 half but without a stripe at middle of base. 



732. INFUSCATUS. 



