612 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



a slide by Busck on February 10, 1935. My examination of this 

 preparation further confirmed the identity of this species. 



28. Acrolophus cockerelli (Dyar) 



Figures 139-143 



Eulepiste cockerelli Dyar, 1900, Can. Ent., vol. 32, no. 10, p. 307, Oct. — Dyar, 



1903, List North Amer. Lep., p. 577, no. 6581. 

 Acrolophus cockerelli Barnes & McDunnough, 1917, Check List Lep. Bor. Amer., 



p. 191, no. 8167.— McDunnough, 1939, Check List Lep. Can. & U.S. Amer., 



p. 103, no. 9553. 



Dyar's original description follows : 



Eulepiste Cockerelli. — Palpi upturned in front of the head, free, as high as the 

 vertex; male antennae simple, slightly serrated toward the ends; veins 8 and 9 of 

 fore wing stalked; thorax and fore wings dark brown-gray, somewhat grizzled or 

 mottled with darker and with an obscure darker spot at the end of the cell. Hind 

 wings dark brown; abdomen gray-brown; expanse 16 mm. One male, Mesilla 

 Park, New Mexico, at light, July 8th (T. D. A. Cockerell); U.S. Nat. Mus., Type 

 No. 4417. 



Prior to the above description, Dyar said of the genitalia of cockerelli: 



Uncus single, its opposing lower limb nearly as long as the upper and stouter. 

 Harpes nearly flat, the ends bent inward, rounded. 



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



Tegumen glabrous ; lateral arm elongate, slender, sinuate, narrowing 

 to point of articulation with vinculum; dorsal area narrow, with 

 mesal portion curving caudad. 



Harpe simple. Lateral aspect: costa and sacculus fused, enlarged, 

 broad, comprising approximate basal three-fifths of harpe, glabrous 

 except for punctate and setose ventrocaudal margin of sacculus, 

 broadest in apical third, evenly narrowing to narrow base. Cucullus 

 rather indistinctly fused with costa and sacculus, rather short, broad, 

 rectangular, comprising approximate apical two-fifths of harpe, di- 

 rected considerably ventrad, not curved mesad, ectal surface subgla- 

 brous, ental surface punctate and setose, dorsal and ventral margins 

 usually linear and parallel, apex truncate or nearly so. 



Transtilla with arm of medium length, glabrous, sublinear, evenly 

 narrowing to acute apex, diverging from margin of costa, failing to 

 reach base of harpe by half to its own length. 



Uncus simple, approximately same as those of pseudohirsutiLs and 

 kearfotti. Dorsal aspect: base small, sub triangular, set off from tegu- 

 men by areas of reduced sclerotization, sparsely punctate and setose, 

 laterobasal margins rounded, lateral margins converging distad into 

 uncal process. Uncal process indistinctly fused with basal area, tubu- 

 lar, rather elongate and slender, sparsely punctate and setose, direc- 



