NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 607 



Busck failed to compare diversus with the much more similar type of 

 kearfotti, also presumably then available to him for study at the 

 National Museum, because he felt that the latter species must be 

 distinct as a result of its smaller wing expanse (22 mm.) and different 

 type locality ("Yuma Co., Ariz. Desert"). 



26. Acrolophus furcatus (Walsingham) 



Figures 127-131 



Neolophus furcatus Walsingham, 1887, Trans. Ent. Soc. London, p. 141, pi. 7, 

 figs. 1, la, lb, June. — Smith, 1891, List Lep. Bor. Amer., p. 94, no. 5043. — 

 Dyar, 1903, List North Amer. Lep., p. 577, no. 6577. — Walsingham, 1915, 

 Biol. Centr.-Amer., pt. 12, vol. 4, p. 377. 



Acrolophus furcatus Bsirnes & McDunnough, 1917, Check List Lep. Bor. Amer., 

 p. 191, no. 8154. — McDunnough, 1939, Check List Lep. Can. & U.S. Amer., 

 p. 103, no. 9540. 



Walsingham's original description follows: 



Neolophus furcatus — Labial palpi, cT, slightly recurved, reaching to the back of 

 the head; the apical joint roughly clothed with appressed scales, not brush-like. 

 Antennae brownish ochreous, not serrated, although having that appearance at 

 the tips, owing to the presence of raised scales. Head, thorax, and palpi dull 

 greyish fuscous. Fore wings rather narrow, the costa almost straight, the 

 apical margin oblique, scarcely convex; apical vein forked; greyish, sprinkled and 

 striated around the margins with brownish fuscous; a broad irregular streak of 

 brownish fuscous, from the base to the end of the cell, partly connected with two 

 ill-defined spots of the same colour on the inner and outer thirds of the fold; 

 fringes greyish fuscous. Hind wings pale greyish brown. Abdomen the same; 

 lateral claspers narrow towards the base, rather triangular and upturned beyond 

 it, obtusely rounded at the apex; uncus double, nearly straight, scarcely at all bent 

 over, its opposing branch below being of nearly equal length with itself. Exp. al. 

 cf , 19 mm. 



Hab. A single male from Arizona, collected by Morrison. 



Walsingham's illustrations consisted of: figure 1, the adult cf in 

 dorsal aspect (in color); figure la, the head of the cf in lateral aspect; 

 and, figure lb, the uncus, gnathos, and cucullus of the cf genitalia in 

 lateral and dorsal aspects. 



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



Tegumen with lateral arm elongate, narrow, glabrous; dorsal area 

 of medium width, glabrous, cephalic portion upraised, caudal margin 

 irregular. 



Harpe simple. Lateral aspect: sublinear, broadest in caudal 

 portion of costa and sacculus, Costa and sacculus fused, broad in 

 caudal portion, narrowing toward base, comprising approximate 

 basal three-fifths of harpe, glabrous except for punctate and setose 

 ventrocaudal margin of sacculus. Cucullus partially set off from 

 costa and sacculus by areas of reduced sclerotization, very sparsely 

 and weakly punctate and setose, margins smooth, dorsal margin 



