588 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



18. Acrolophus luriei, new species 



Figures 100-101 



Male. — Somewhat similar to arizonellus in general habitus. 

 Head, labial palpi, and antennae luteous. Labial palpi elongate, 

 recurved back over head and extending slightly beyond center of 

 thorax, well clothed with scales but not plumose, basal portions 

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

 diverging from thorax and from each other distad. Eyes rather small, 

 weakly protruding, heavily setose, wealdy lashed. Antennae simple, 

 laminate, covered dorsad with scales, segmental processes set closely 

 together thi'oughout antennae. Thorax ochreous tinged with black 

 and white. Fore wings rich brown sprinkled with bars and spots of 

 darker bro\vn; markings in form of short bars along apical half of 

 costa, small dots along apical margin, large spot at outer end of cell, 

 and diffused patch beneath center of fold; color pattern variable, 

 commonly reduced or almost entirely wanting. Hindwings rich 

 brown, fringes considerably paler. Legs ochreous. Abdomen dark 

 brown. Wing expanse: 19 to 24 mm. 



Female. — General coloration similar to that of cf, pattern 

 variable as in cf". Labial palpi short, basal portions appressed to 

 head, apical portions strongly diverging from head. Eyes essentially 

 same as those of d^. Antennae simple, slender, segments completely 

 encircled by scales. Wing expanse: 26 to 29 mm. 



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



Tegumen with lateral arm broad, glabrous, gradually narrowing 

 toward point of articulation with vinculum; dorsal area fairly broad, 

 not emarginate along meson, mesocaudal area very finely punctate 

 and indistinctly fusing with base of uncus. 



Harpe simple. Lateral aspect: linear, rather elongate and slender. 

 Costa and sacculus fused, glabrous except for sparsely punctate and 

 setose ventrocaudal margin of sacculus, apical half slightly and even- 

 ly expanded dorsad and ventrad, basal portion narrowing beneath 

 point of attachment of arm of transtilla to approximately half width 

 of apical portion, without angular formation at ventrocaudal ex- 

 tremity of sacculus. CucuUus rather indistinctly fused with costa 

 and sacculus, comprising approximate apical half of harpe, linear or 

 sublinear, heavily punctate ectad except for dorsal portion of basal 

 two-thirds, base slightly narrowed, expanding slightly toward apex; 

 apex broadly and evenly rounded, margin very finely dentate. 



Transtilla with arm glabrous, well sclerotized, rather elongate, sub- 

 linear, slightly convergent with costal margin, less than one-third as 

 long as harpe, terminating subacutely near basal extremity of harpe. 



