NORTH AMERICAN ACROLOPHIDAE — HASBROUCK 533 



Walsingham (1887) quoted Chambers' original description and 

 stated : 



To this I may add that the antennae are compressed, flattened, having a 

 roughened or serrated appearance caused by lines of sHghtly raised scales around 

 each joint. The apical vein of the fore wing is not forked. The lateral claspers 

 are narrow, elongate, slightly upturned from near the base, but straightened 

 beyond, not spoon-shaped, but evenly rounded and slightly inverted at the apex. 

 The uncus is double, straight, the points scarcely at all bent over, very short, 

 not closely approximate, slightly diverging. 



Walsingham also figured a dorsal view of the uncus and a lateral 

 view of the uncus and cucullus for this species. 



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



Tegumen glabrous; lateral arm rather elongate and broad, margins 

 sublinear and gradually converging toward point of articulation with 

 vinculum; dorsal area of medium width, not separated along meson. 



Harpe simple. Lateral aspect: sublinear, approximate apical half 

 considerably narrower than basal half; costa and sacculus fused, 

 linear, comprising approximate basal half of harpe; glabrous except 

 for sparsely punctate and setose, angulate, ventrocaudal margin of 

 sacculus; broadest in apical third, approximate basal half gradually 

 narrowing basad, basal extremity rather narrowly rounded; cucullus 

 set off from costa and sacculus by dorsal and ventral constrictions 

 and by area of reduced sclerotization, comprising approximate apical 

 half of harpe, commonly directed slightly ventrad, dorsal portion of 

 basal two-thirds glabrous, major portion becoming increasingly 

 punctate and setose ectad and entad toward apex, rather slender, 

 about two-thirds as broad as costa and sacculus, gradually narrowing 

 toward rather narrowly rounded apex, dorsal margin sinuate, ventral 

 margin linear to minutely sinuate in basal half and minutely sinuate 

 in apical half; slender area extending along ventral margin markedly 

 reduced in thickness and with smooth, glassy appearance. 



Transtilla with arm of medium length and width, well sclerotized, 

 glabrous, slightly diverging from to strongly converging toward 

 dorsal margin of costa, terminating acutely or subacutely at or near 

 basal extremity of harpe. 



Uncus bifid. Dorsal aspect: base largely set off from tegumen by 

 areas of reduced sclerotization, heavily punctate and setose except 

 along meson, cephalic margin evenly emarginate mesad; lateral 

 margins very heavily sclerotized, sublinear, gradually converging 

 distad; angle of bifurcation rather broad, evenly rounded; furcae 

 short, of medium width, tubular, punctate and setose, slightly di- 

 verging and curving ventrad toward apices, narrowing distad, apices 

 finely acute. 



