5o* 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



on Staphylea trifolia but not a single specimen of the typical 

 species. 



Mount Carmel, 24 July, 1904 (W. E. B.). 

 L. instabilis (Reuter). 



Acta Soc. Sci. Fenn., xxxvi, No. 2, 72, 1909. 



Male: Length 5.4 mm., width 2.02 mm. ; bright red, apical half 

 of clavus and inner half of corium darkened with fuscous ; mem- 

 brane uniformly blackish; tibiae blackish, becoming reddish at 

 base; genital claspers distinctive (fig. Jj). Antennae; segment 

 i, length .58 mm., thickness .08 mm. ; ii, 1.8 mm., greatest thickness 

 (.07mm.) at middle and tapering to smaller at each end; hi. 

 1.19mm., slender; iv, .52mm.; black, first two segments clothed 

 with moderately short black hairs. 



Female: Length 6 mm., width 2.4 mm.; similar to the male in 

 coloration and in structure of the antennae. 



District of Columbia, Maryland. 



marginalis 



Fig. 78. Lopidea marginalis Reuter, — male genital claspers, (a) left 

 clasper, dorsal aspect, (b) right clasper, dorsal aspect, (f) right clasper, 

 lateral aspect. Greatly enlarged. Drawing by Dr. H. H. Knight. 



L. marginalis (Reuter). 



Acta Soc. Sci. Fenn., xxxvi, No. 2, 72, 1909. 



Male: Length 6 mm., width 2.2 mm. ; very similar in form and 

 coloration to instabilis but usually with the embolium pale and the 

 scutellum darkened with fuscous; genital claspers distinctive oi 

 the species (fig. 78). In some specimens the embolium may be 

 bright red as in instabilis, but usually the scutellum, calli, and base 

 of head are distinctly blackish. 



Female: Length 6.6 mm., width 2.5 mm.; very similar to the 

 male in structure and in coloration. 



This form was originally described as a variety of instabilis but 

 proves on examination of the genital claspers to be a distinct 

 species. 



New Haven, 7 Aug., 1905 (W. K. B.). 



