NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 659 



Abdomen (missing). 



Legs brownish fuscous. 



Type.— Male (Walsingham determined, No. 4749, 1906), Cat. No. 10360, 

 U.S.N. M. 



Habitat. — Custer County, Westclifif, Colorado. (Collection Beutenmiiller). 

 Unique. 



This agrees with the genus Homonymus, described from South America, but 

 differs from the only species at present known in its shorter palpi and by the 

 absence of deep purple coloring in the hindwings, as well as by the somewhat 

 dififerent pattern of the obscure markings on the forewings. 



Male genitalia. — Vinculum typical, as in other species. 



Tegumen glabrous; lateral arm broadest in central portion, extrem- 

 ities narrowing, cephalic margin sublinear, caudal margin irregularly 

 rounded; dorsal area narrow, margins sublinear; weakly sclerotized, 

 finely pitted, transverse area lying between and fusing with caudal 

 margin of tegumen and cephalic margin of base of uncus. 



Harpe simple, rather elongate and slender (especially in apical por- 

 tion). Lateral aspect: costa and sacculus fused, comprising approxi- 

 mate basal half of harpe, glabrous except for punctate and setose ventro- 

 caudal area of sacculus, broadest just basad of this area, central 

 portion somewhat expanded dorsad and ventrad, basal portion evenly 

 narrowing to narrow basal extremity, approximate apical fourth some- 

 what narrowed ventrad. Cucullus somewhat variable, considerably 

 more robust in some specimens than in others, indistinctly fused with 

 costa and sacculus, basal half sparsely and apical half heavily punctate 

 and setose ectad and entad, approximate basal third directed slightly 

 dorsad and narrowing distad, approximate apical two-thirds directed 

 somewhat ventrad and gradually expanding toward apex; apex ap- 

 proximately as broad as base, somewhat reduced ventrad, broadly 

 but unevenly rounded. 



Transtilla with arm glabrous, well sclerotized, somewhat sinuate, ap- 

 proximately one-fourth as long as harpe, subparallel with margin of 

 costa, apical fifth converging to costa, terminating subacutely near 

 basal extremity of harpe. 



Uncus single. Dorsal aspect: base set off from tegumen by areas of 

 reduced sclerotization, rather broad, cephalic margin with broad and 

 shallow mesal emargination occupied by finely pitted transverse area, 

 laterobasal extremities irregularly rounded, lateral margins converging 

 distad quite sharply into uncal process; uncal process of medium width 

 and length, curving caudoventrad, well sclerotized, with median longi- 

 tudinal suture becoming obsolete toward apex, base sparsely punctate 

 and setose, narrowing only slightly toward subacute apex. 



Gnathos fused, large and broad, considerably flattened dorso ventrad, 

 curving ventrocaudad, large mesal portion rather weakly sclerotized 



