THE RED-BUG FAMILY. 441 



III. Pyrrhocoris Fallen, 1814, 9. 



Oval subdepressed species of medium size having the front 

 of head declivent, as wide across eyes as front margin of prono- 

 tum ; first joint of beak slightly longer than head ; pronotum 

 subquadrate, front margin broadly concave, side margins acute, 

 reflexed ; elytra often abbreviated and then without a mem- 

 brane, apical margin of corium rounded. One introduced Euro- 

 pean species has been taken in the eastern states. 



397 (626). Pyrrhocoris apterus (Linnaeus), 1758, 447. 



Elongate-oval. Black, shining; pronotum orange-red, a large sub- 

 lunate transverse callosity on front lobe and cross-bar on hind one black; 

 corium orange-red, a triangular spot near base and a larger round one 

 on apical third black; membrane fuscous-brown; connexivum, coxa? and 

 hind margins of all pleura and sixth ventral orange-red. Antenna? fus- 

 cous-black, finely and sparsely pubescent; joint 1 rather stout, feebly 

 curved, as long as head; 2 more slender and slightly longer than 1; 3 

 half the length of 2. Pronotum with callosity on front lobe smooth or 

 minutely strigose; remainder of disk, as well as that of scutellum, 

 coarsely and irregularly punctate, hind margin truncate. Elytra very 

 finely and sparsely punctate. Length, 9.5 — 10.5 mm. 



France (U. S. Nat. Mus.) . A cosmopolitan species recorded 

 from Snake Hill, N. J., by Barber (1911b, 112). Distant men- 

 tions it also from Costa Rica. 



IV. Dysdercus Amyot & Serville, 1843, 272. 



Elongate-oval, depressed glabrous species of medium size 

 having the head porrect, convex, inserted in thorax to eyes and 

 wider across them than front margin of pronotum ; antennae 

 slender, first joint usually longest, second and fourth often sub- 

 equal, third shortest ; beak reaching second ventral ; pronotum 

 subtrapezoidal, narrowed in front, side margins acute, reflexed, 

 disk with a deep transverse impression in front of middle, front 

 lobe with a wide usually pale collar ; scutellum small, impunc- 

 tate, not carinate ; fore femora armed beneath with several 

 small preapical spines. This is a large genus of particolored 

 species, the red largely predominating. Stal (1874, 117) recog- 

 nized 32 from America and Van Duzee (1917) nine from 

 the United States. Of these four occur in our territory. 



KEY TO EASTERN SPECIES OF DYSDERCUS. 



a. Corium red, narrowly margined with white, usually with a large 

 transverse dark spot on apical third; length usually less than 11 

 mm. 398. andre^e. 



