MORGAN HEBARD 99 



Characters of Female. — (Collison Ridge, Bath County, X'irginia.) Size rather 

 small, form more slender than in uhleriana or fiilve seen s, not as compact as in bol- 

 liana. Head broader and more evenly convex than in male. Interocular width 

 slightly greater than that between antennal sockets. Minute ocellar spots present. 

 Pronotum convex, without discal sulci, ample, with portion of greatest width near 

 caudal margin, which is truncate, very weakly convex. Tegmina quadrate pads, 

 with sutural margins slightly overlapping, extending slightly beyond caudal margin 

 of median segment, rounding broadly at apex of anal vein and with the more broadly 

 rounded angle at costal margin slightly the more produced, a slight emargination 

 (normally!") indicated on the margin of the discoidal field; veins distinct. Wings 

 represented by small atrophied pads, their apices extending slightly beyond the 

 distal margin of the metanotum. Sixth dorsal abdominal segment with distal 

 margin weakly and broadly convex in large mesal portion. Supra-anal plate de- 

 cidedly more than twice as wide as long, lateral margins straight convergent, 1^2 

 from bases of cerci to acute, sharply rounded apex. Cerci shorter than in male, 

 with lateral margins feebly crenate, joints distinct but dorsal. surface subdeplanate. 

 Subgenital plate convex, little produced, with free margin rather weakly convex. 



Measurements {in millimeters) 



■^ Length of Length of Width of Length of Width of 



^ body pronotum pronotum tegmen tegmen 



Cambridge, Massa- 

 chusetts (3) 13-13-9 3- 1-3-2 3-7-3-9 15-15- I 4-S-5 



West Point, Xew 



York (2) 1 1. 5-13. 8 2.7-3.2 3 -4-4 -I 14-3-16.6 4.6-5.6 



Ivy Hill, Pennsyl- 

 vania (9) 12.1-14.2 3-3.4 3-7-4-3 14-7-17 4-8-5-2 



Washington, District 



of Columbia (15) 11.7-13 3-1-3-3 3-^-4-3 I3-8-I5-7 4-6-4-7 



Tappahannock, \"ir- 



ginia (3) 11. 8-12 3-1-3-2 3-8-3-8 14-137 4-6-4-1 



'^' As in the other species showing this type of tegmina, the proportions show frequent 

 slight individual variation. Sometimes an appreciable elongation, sometimes a distinct 

 narrowing, is found. At the free margin of the discoidal field variation frequently 

 occurs, ranging from no emargination whatsoever, to a decided concavity, which gives 

 the tegmina a strongly truncate form. This latter condition is normal in fulvescens 

 from the eastern United States, though occasional specimens from that region show only 

 a slight emargination. 



It is evident that, though eastern material of virginica and fulvescens is normally dif- 

 ferent in this feature, it can only be used as of secondary importance. Valid characters 

 such as form, pronotal dimensions, production of the sixth dorsal abdominal segment 

 and form of supra-anal plate must be used in separating females of these species. Fail- 

 ure to recognize this has resulted in Rehn and Hebard's incorrectly recording small 

 females of fulvescens, unusual in tegminal contour, as borealis, a synonym of virginica, 

 from Goldsboro, North Carolina and IVIena, Arkansas. 



'^- Occasional specimens show a vcr>' weak concavity of these margins. 



MEM. AM. ENT. SOC, 2. 



