MORGAN HEBARD 



97 



1865. I[schnoptera] borcalis Brunner,'-" Xou\-. Syst. Blatt., p. 133. [d^. North 

 America.] 



The above synonymy is due to the fact that, at that time, the 

 sexes of the species of the present genus in which the females have 

 decidedly reduced tegmina, were supposed to represent distinct 

 species, universally referred to different genera. 



Males of this species are distinctive in the modification of the 

 median segment and in the decided truncation of the supra-anal 

 plate. In general appearance they are nearest males of P. iihler- 

 iana; which sex of these two species, among the medium small and 

 normally pale forms of the genus, has exceptionally broad tegmina. 



Proper association of the sexes of P. iihleriana and P. fulvescens, 

 and the extensive series of those forms, as well as of the present 

 species, now before us, leaves no room for doubt that the female, 

 described by Brunner as T. virginica, represents that sex of the 

 species the male of which was described, on a later page of the same 

 work, as /. borealis. 



As we now know, the female of uhleriana is very different from 

 that of the present species."'- Brunner's description of virginica 

 could only be confused with fulvescens, but the females of that 

 species average distinctly larger, are decidedly more robust and 

 more frequently show wide differences in coloration. In addition 

 we would state that, in virginica, the females normally ha\e the 

 supra-anal plate with lateral margins straight, convergent to the 

 more acute apex, the caudal margin of the sixth dorsal abdomi- 

 nal segment distinctly less convex and the large proximal spines of 

 the cephalic margins of the cephalic femora fewer than in females 

 of fulvescens. 



The only other species of the genus, the known females of which 

 have subquadrate tegmina,"^ is P. lata, an insect agreeing more 

 closely with fulvescens, but much larger and more robust; under 

 fulvescens full comparisons are made. 



'^' A male of this species is also described on page 134, incorrectly as /. unicolor 

 (Scudder). It is merely a specimen of recessive coloration, showing individual differ- 

 ences in the rami of the ulnar vein of the wings. 



!■*- See description under uhleriana. 



'^' Females of Symploce lita Hebard, show a general resemblance to those of the present 

 species, see page 151. 



MEM. AM. ENT. SOC, 2. 



