NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 633 



Grote's original description follows : 



Eutheca mora. — 9- I have several specimens of a Psychid (?) form which I 

 cannot find in the books, and in collections the species is always unnamed. The 

 antennae are simple, scaled. Eyes naked; ocelli wanting. Maxillae not per- 

 ceivable. Labial palpi slight, hairy, ascending, curved. Body slender, sparsely 

 haired. Legs rather stout and long; hind tibiae with two pairs of spurs. Fore 

 wings elongate; costa arched; e.xternal margin oblique, even; internal margin 

 rounded at base, retiring before internal angle. Veins 12, simple, cell divided; 

 veins 2, 3, 4, equidistant from the end of median vein. Vein 1 furcate at base. 

 Cell incompletely closed. Veins 5 and 6 nearly equidistant between 4 and 7; 

 7 from extremity of the vein dividing the cell; 8, 9, 10 near together from upper 

 corner of cell, running to costa before apex; 11 out of subcostal vein very near 

 the base; 12 free. Hind wings 8-veined; veins simple; the cell incompletely 

 closed; vein 2 out of median vein at within outer third; veins tending to be equi- 

 distant. The fore wings are ochrey brown, with costal dots noticeable before 

 apices. A pale ochrey shade on internal margin at base, extending upwardly in 

 a triangular manner beyond the middle. This shading is not always defined. A 

 curved discal streak. Hind wings brownish fuscous. Fringes on both wings a 

 little darker; even, concolorous. Beneath much as above; costal region of 

 secondaries ochrey brown. The hairy body parts concolorous fuscous brown; 

 with paler hairs about the head and face. Expanse, 30 mil. Hab. — New York. 

 I have not seen the male. This form has a curious resemblance to Hepialus, 

 but the antennae are longer. 



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



Tegumen glabrous; lateral arm rather slender, weakly sinuate, 

 narrowing to point of articulation with vinculum; dorsal area of 

 medium width, not separated along meson. 



Harpe simple. Lateral aspect: slender, approximate basal five- 

 sevenths sublinear, apical two-sevenths curving noticeably ventrad, 

 broadest slightly basad of center; costa and sacculus fused, reduced, 

 rather slender, shortened, comprising approximate basal three-sevenths 

 of harpe, glabrous except for sparsely punctate and setose ventrocaudal 

 margin of sacculus, broadest in apical half, basal half strongly narrowed 

 immediately basad of point of attachment of arm of transtilla, basal 

 extremity subacute; cucullus indistinctly fused with costa and sacculus, 

 comprising approximate apical four-sevenths of harpe; basal half 

 broadest, slightly narrowing distad, sublinear, with dorsal margin 

 sinuate, becoming sparsely punctate and setose distad; apical half 

 slightly narrowed, with dorsal and ventral margins sublinear and 

 subparallel, directed somewhat ventrad, becoming heavily punctate 

 and setose distad especially on ental surface; apex bluntly rounded. 



Transtilla with arm rather short, very slender, well sclerotized, 

 glabrous, rather broadly separated from costa, gradually converging 

 distad toward dorsal margin of costa, terminating acutely somewhat 

 distad of basal extremity of harpe. 



Uncus bifid. Dorsal aspect: base partially separated from tegumen 

 by lateral areas of reduced sclerotization, rather sparsely punctate, 



