NORTH AMERICAN ACROLOPHIDAE — HASBROUCK 669 



Paratypes (9 cf cf , 2 99). — American Museum of Natural History 

 (2 d^ (f , 1 9); California Academy of Sciences (5 cf cf ); U.S. National 

 Museum (1 cf , 1 9); University of Kansas (1 d^). 



Type locality.^ — Patagonia, Santa Cruz Co., Ariz. (Aug. 1, 1924, 

 E. P. Van Duzee). 



Distribution.^ — Southwestern United States. Southern Arizona. 



Specimens examined.' — 13 (10 c?" cf , 3 99), from 2 localities: 



Arizona: Patagonia, Santa Cruz Co., c? (Aug. 1, 1924, J. O. Martin), 5 cf cf, 9 

 (Aug. 1, 1924, E. P. Van Duzee), d', ? (Aug. 2, 1924, Van Duzee), 2 d^ cf , 9 

 (July 18, 1948, C. & P. Vaurie); San Bernardino Ranch, Cochise Co., d^ (Aug., 

 elevation 3750 feet, F. H. Snow). 



Remarks. — ^This species undoubtedly ranges southward into 

 Mexico. It is closely related to davisellus, the two comprising a 

 small species gi-oup. A. serratus may be distinguished from its close 

 relative, as well as from the other species treated here, on the basis 

 of a number of external and internal features described in detail in 

 the key. In serratus the labial palpi are of intermediate length, 

 the antennae are of a type that is transitional between the laminate 

 and unipectinate forms, the color pattern is fairly characteristic and 

 constant, the cucullus of the harpe is very slender and not appreciably 

 capitate, and the apical portion of the aedeagus is wealdy dentate or 

 serrate. The genital structure is consistent throughout my series of 

 specimens representing serratus. In the davisellus-serratus species 

 group, the peculiar mesoventral process of the sacculus may be used 

 both to relate and to separate the two species. 



The name, serratus, refers to the serrate margin of the aedeagus. 



45. Acrolophiis seculatuSf new species 



Figures 206-207 



Female unknown. 



Male.^ — ^Similar to variabilis in general habitus, but much smaller 

 and more fragile. Head ochreous fringed with white. Labial palpi 

 shortened, fuscous suffused with ochreous, partially recurved over 

 head, partially erect, extending considerably above head, rather 

 narrowly separated from each other, major portions gradually 

 diverging from head distad, each segment heavily clothed with scales 

 developing into prominent tuft along anterior margin, segmentation 

 clearly visible despite vestiture. Eyes large, protruding, naked, 

 sparsely lashed. Antennae simple, ochreous, segments globose; 

 each segment completely encircled by ring of short, brown scales. 

 Forewings brown, marked with dark brown and fuscous, pattern 

 variable; markings commonly consisting of small spots or bars along 

 apical half of costa, suffused patch at outer end of cell merging with 

 larger patch on center of fold, small spot below fold near base, and 



