NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 569 



closely appressed to head and to each other, apical portions gradually 

 diverging from thorax and from each other, inner sm^faces ochreous, 

 outer surfaces becoming progressively fuscous basad, central and apical 

 segments plumose and fringed with grayish-white distad. Eyes 

 moderately large and protruding, setose, without lashes. Antennae 

 simple, laminate, covered dorsad with scales, segmental pj-ocesses set 

 closely together throughout antennae. Forewings with coloration 

 quite variable, commonly rich brown with diffused luteous patches 

 below fold and in apical third. Hindwings, fringes, and abdomen 

 varying shades of brown. Wing expanse: 22 to 30 mm. 



Female. — Coloration variable as in cf , color pattern comparatively 

 reduced. Labial palpi short, porrect, densely clothed with scales, 

 basal and central portions closely appressed, apical portions divergent, 

 inner surfaces ochi-eous, outer surfaces suffused with fuscous. Eyes 

 essentially same as those of cf. Antennae similar to those of cf 

 except more slender and covered dorsolaterad with scales. Forewings 

 variable in coloration, commonly brown with luteous patches as in cf , 

 commonly dark brown to pale brown with little or no color pattern. 

 Hindwings, fringes, and abdomen dark brown to pale brown. Wing 

 expanse: 30 to 38 mm. 



Male genitalia. — Vinculum typical. 



Tegumen with lateral arm broad, narrowing considerably toward 

 base, mesal portion punctate; dorsal area broad, mesal portion 

 glabrous. 



Harpe simple. Lateral aspect: sublinear, broadest in central area. 

 Costa and sacculus fused, broad, comprising basal half of harpe, 

 glabrous except for heavily punctate and setose ventrocaudal margin 

 of sacculus, narrowing gradually to base. Cucullus set off from costa 

 and sacculus by constrictions and areas of reduced sclerotization, 

 comprising apical half of harpe, heavily punctate except for glabrous 

 dorsal area along basal two-thirds, basal portion slightly constricted; 

 apex somewhat narrowed, rounded. 



Transtilla with arm typical; sinuate, glabrous, approximately two- 

 sevenths as long as harpe, terminating above base of harpe. 



Uncus bifid. Dorsal aspect: base with deeply emarginate cephalic 

 margin occupied by large and subtriangular caudal extension of 

 tegumen, lateral areas punctate, lateral margins sublinear and con- 

 vergent; angle of bifurcation very narrow, acute; furcae rather short, 

 robust (but not laterally flattened), narrowly separated, slightly 

 divergent, gradually narrowing distad, directed strongly ventrad, 

 apices acute. 



Gnathos paired, typical; arms rather narrow, directed ventrocaudad, 

 well sclerotized, apical thirds minutely scobinate and overlapping, 

 apices rounded. 



