Pomona College Journal of Entomology 499 



Aphalara artemisiae angustipennis n. var. 

 (Figure 157, O; 158, F; 159, M; 16'0, K, L) 

 Body larger than in the species, whitisli yellow to yellowish; wings yellowish 

 white, often brownish by dense spotting; wing membrane less corrugated. Struc- 

 turally there is very slight differentiation. 



Described from many males and fem;iles collected in Colorado by C. F. Baker; 

 determined by E. A. Schwarz as identical to Riley's manuscript forms of Aph. 

 angiislipennis. 



Aphalara communis n. sp. 

 (Figure 157, S; 158, P; 159, H; 160, N) 



Length of body 2.7 mm.; length of forewing 3.0 mm.; greatest width 1.1 mm.; 

 length of vertex .36 mm.; widtli between eyes .52 mm.; with eyes .SI mm. General 

 color greenish yellow ; body moderately large. 



Head not deflexed, with eyes not quite as broad as thorax, not coarsely punctate. 

 Occipital margin arcuate ; vertex discally rather plane, with a shallow, lunate im- 

 pression posteriorly; discal areas large; anterior margin roundly emarginate at 

 median suture and less so over antennal insertions. Facial cones wanting. Genae 

 quite swollen. Eyes prominent, large ; anterior ocellus not visible from above, 

 under vertex, scarcely stalked. Labrum not large, subglobose, slightly pubescent. 

 Antennae inserted on frons under slightly projecting vertex. 



Thorax level, scarcely arched, large, broad, not coarsely pubescent, slightly 

 rugulose. Pronotum large, long, prominent, almost as long as dorsulum ; pleurites 

 small, short; pleural suture oblique; forecoxae mostly concealed. Dorsulum broad. 

 Wings large, rather long, hyaline and sliglitly flavous, about two and three-fourths 

 times as long as broad, broadest across first marginal cell, broadly rounded apically ; 

 first marginal cell long, more than half as long as radial cell ; cubital petiole 

 usually about equal in length to discoidal subcosta, sometimes shorter. 



Male — Genital segment very large, prominent; claspers long, conspicuously 

 spatulate apically ; anal valve large, with long posterior lobe ; inferior cusp not 

 large ; penis long. 



Female — Abdomen large, heavy. Genital segment very long; usually longer 

 than rest of abdomen ; dorsal plate longer and less acute than ventral ; genital pore 

 relatively rather short ; jjubcscence short and sparse. 



Described from numerous males and females collected by C. F. Baker at Pagosa 

 Springs, Colorado. Distribution: In the C. F. Baker collections as follows: 

 Colorado, Arizona, California, Nevada, Wisconsin, Louisiana, Alabama; Louisiana 

 (F. C. Bishopp) ; Wyoming (C. W. Metz). 



This species is very closely related to Aph. nervosa Forst., a European species. 

 The principal difference is in the wing membrane; in the European species it is 

 conspicuously transverselj' wrinkled, subhyaline and not flavous; in the American 

 species it is distinctly flavous and scarcely transversely wrinkled. 



Aphalara communis metzaria n. var. 



This variety is separated chiefly upon the presence of brown dots or spots in 

 the distal portion of the forewing, somewhat as in Aph. angustipennis Crawf., but 



