NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 545 



(July 20, 1937, D. J. & J. N. KnuU); Hualapai Mountains, cf, 9 (July 15-30, 

 1921, O. C. Duffner); Oracle, ? (July 28, 1924, E. P. Van Duzee); Paradise, 

 Cochise Co., 9 (July, O. C. Poling); Patagonia, d", 9 (July 18, 1948, C. & P. 

 Vaurie). Texas: Davis Mountain, cf (Aug. 2, 1937, D. J. & J. N. Knull) ; 

 Fort Davis, cf (July 2, 1948, C. & P. Vaurie); Valentine, cf (July 7, 1917, 

 collector unknown). 



Remarks. — This species is here recorded from Mexico on the 

 basis of its synonym, mexicanellus BeutenmuUer, the holotype 9 of 

 which was collected in Mexico City. A. JUicicornis is related to 

 those species having elongate labial palpi, setose eyes, and strongly 

 bipectinate antennae. However, it is not closely related to any 

 other acrolophid. It may be easily separated from its nearest relatives 

 on the basis of its distinctive color pattern, uncus, harpe, and aedeagus. 

 In appearance, filicicornis is one of the more robust members of the 

 genus. 



Photographs furnished me by Mr. Tams of the British Museum 

 (Natural History), labeled ^'filicicornis Wals., type," show the adult 

 cf and 9 and their respective genitalia and confirm the identity of 

 this species. Dyar (1900) listed the following distributional data for 

 filicicornis: "Oracle, Arizona, July 12 (E. A. Schwarz); Fort Grant, 

 Arizona, July 20 (H. G. Hubbard); Brownsville, Texas, June 10 (C. H. 

 T. Townsend)." 



Beutenmiiller described A. mexicanellus in 1888 as a new Mexican 

 species. Following the description, he stated: "This species has a 

 superficial resemblance to Acrolophus hulstellus, Beut., but may be 

 readily distinguished from it by being a much larger heavier insect, 

 and also by the rounded apices of the wings. Expanse of wings 30 mm. 

 1 9. Taken by Mr. Julius Mohn in the City of Mexico." 



In 1891, Smith placed mexicanellus as a subspecies of the slightly 

 older species, Felderia filicicornis Walsingham, by presenting the 

 trinomial, Felderia filicicornis mexicanellus, in his check list. 



In 1900, Dyar properly placed "Mexicanellus^' as a sjmonym of 

 "Felderia filicornis, Walsingham," despite his misspelling. Since that 

 date, mexicanellus has consistently appeared in the literature as a 

 synonym of filicicornis. 



The type 9 of A. mexicanella, in the U.S. National Museum is 

 labeled "type no. 408, Mexico City, Mexico, Beutenmueller Collec- 

 tion," and I find no differences between this specimen and my series 

 of 99 previously determined as filicicornis. Thus, mexicanellus 

 (9) BeutenmuUer should be considered an old synonym of filicicornis 

 (Walsingham) with Dyar receiving the credit for its placement. 



