UNITED STATES NATIONAL MUSEUM BULLETIN 207 



sclerotization developed at genital opening into a stout, squarish ventral 



plate Olybria (p. 113) 



Male genitalia without projecting arms from tegumen. Ductus bursae of female 

 otherwise 49 



49. Harpe of male genitalia with a long hair brush from inner surface, along lower edge of 

 basal half of sclerotized costa. Bursa copulatrix of female with the lobe giving ofi' 

 ductus seminalis strongly sclerotized; or most of dorsal area of bursa strongly and 

 smoothly sclerotized; or bursa with conspicuous, round or oval, strongly pigmented 

 and sclerotized, densely granulate patches [absent in Nephopteryx suhcaesiella (fig. 



826)], the bursa otherwise spinose over its membranous areas 50 



Harpe of male without such hair brush. Bursa of female not as above 53 



60. Male with sacculus of harpe strongly produced at apex. Female with most of dorsal 



sm-face of bursa strongly and smoothly sclerotized Glyptocera (p. 100) 



Male with sacculus of harpe simple (not produced at apex) . Female with only the lobe 

 giving off ductus seminaUs sclerotized: or biu-sa with granulate sclerotized 

 patches 51 



51. Penis of male armed with numerous strong, slender spines. Female with lobe of bursa 



giving off ductus seminalis strongly sclerotized Oreana (p. 112) 



Penis of male armed with two stout spines or (very rarely) one spine. Bursa of female 

 with granulate patches, the lobe giving off ductus seminalis not sclerotized ... 52 



52. Harpe of male genitalia with an appressed, stout, thorny or serrate clasper. Female 



with ductus bursae unsclerotized adjacent to bm-sa, but with strong sclerotization 



at genital opening Meroptera (p. 121) 



Harpe of male with clasper digitate, slender, simple (without spining). Female with 

 ductus bursae sclerotized along ventral surface from junction with bursa, the sclero- 

 tization terminating before genital opening, the latter simple (unsclerotized) . 



Nephopteryx (p. 123) 



53. Forewing with veins 4-5 stalked for nearly half their lengths Tacoma (p. 178) 



Forewing with veins 4-5 not stalked (slightly separated or closely approximate at 



cell) 54 



54. Male genitalia with transtiUa complete but very weakly sclerotized (a narrow angulate 



band); aedeagus slender, elongate, not spined or divided. Female genitalia with 

 bursa entirely membranous and smooth; ductus bursae rather narrow, tubular and 

 sclerotized throughout, nowhere appreciably widened; genital opening narrow (no 



wider than narrowest part of ductus bursae) Tota (p. 170) 



Male genitalia with transtUla incomplete or absent; aedeagus moderately broad to stout, 

 if sometimes slender and elongate then spined or partially divided or {Chorrera) 

 vinculum with produced lateral lobes from terminal margin. Female with or with- 

 out signa in bursa; if without signa, bursa spinose or with same sclerotizations 

 adjacent to ductus bursae; if bursa entirely membranous and smooth, genital 

 opening decidedly broadened 55 



55. Male with aedeagus of genitalia spined or partially divided; if sometimes simple, then a 



strong knoblike and spinose projection from harpe at base of costa. Female without 

 signa in bursa, the latter usually simple (unsclerotized and smooth), but sometimes 

 with sclerotized, convolute, longitudinal bands near jimction of biu-sa and extending 



into the ductus, the bursa never spinose Pyla (p. 142) 



Male with aedeagus neither spined nor divided; if harpe sometimes with projection from 

 base of costa, the latter neither knoblike nor spinose. Female with or without signa 

 in bursa; if without signa, the bursa spinose (at lease partially so) or sclerotized at 

 junction of bursa and ductus bursae, but such sclerotization not in the form of 

 convolute, longitudinal bands 56 



56. Male with maxillary palpus squamous or filiform. Female without signa; a serrate or 



minutely spined sclerotization at junction of bursa and ductus bursae, the latter 

 broad and strongly sclerotized or with a pair of elongate sclerotized plates behind 



