NORTH AMERICAN ACROLOPHIDAE — HASBROUCK 539 



Anellus membranous, unarmed, juxta absent. 



Aedeagus of medium length, slender, cylindrical, asymmetrical, 

 sublinear in dorsal and ventral aspects, apical half cm-ving evenly 

 ventrad through angle of approximately 75° in lateral aspect, width 

 nearly constant tliroughout except at base and apex, base moderately 

 and irregularly expanded cephaloventrad, approximate apical fourth 

 narrowing and opening dextrad, apex acute; median dextral area 

 basad of opening with or without single row of approximately six 

 to twelve, minute, acute spines of various sizes. 



Vesica small, membranous, apex acute, ventral surface armed with 

 single row of approximately six to sixteen cornuti, Cornuti rather 

 small, nearly uniform in size, acute, du-ected distad, merging with 

 much smaller spines (when present) of aedeagus to form continuous 

 row. 



Type. — Type cf in the British Museum (Natural History). Addi- 

 tional type material at the Academy of Natural Sciences of 

 Philadelphia. 



Type locality. — "Texas." 



Distribution. — Texas eastward to Florida and northward to North 

 Carolina. 



Specimens examined. — 56 (all cf cf), from 3 localities: 



Florida: Gainesville, cf (June 2, 1927, traplight, J. S. Rogers), 43 cf cf (June 

 3, 1927, traplight, Rogers), cf (June 29, 1927, traplight, Rogers), cf (July 7, 1927, 

 traplight, Rogers). All specimens from Cornell University collection. North 

 Carolina: Maxton, cf (May 16, 1944, A. B. Klots), cf (May 20, 1944, Klots), 

 cf (no date, Klots). Specimens from American Museum of Natural History. 

 Texas: Locality and date unknown, 7 cf cf ("Tex.," Andreas Bolter collection). 



Remarks. — A. simulaius should also be found in South Carolina, 

 Georgia, Alabama, Mississippi, and Louisiana. Dyar, in 1903, re- 

 ported this species from Arizona as well as from Texas; however, 1 

 have seen no examples of A. simulatus from Arizona. It probably 

 ranges southward into Mexico. It is closely related to acomus and 

 hicornutus, with which it forms a species group. This group has been 

 characterized in the key and in the foregoing remarks on acornus. 

 A. simulatus may be distinguished from its close relatives, as well as 

 from all other acrolophids, by its characteristic harpe and aedeagus. 



Mr. Tams of the British Museum (Natural History) has sent me 

 photographs labeled "simulatus Wals., type," showing the adult cf 

 and its genitalia, that confirm the identity of this species. Dr. E. P. 

 Darlington, in a letter, 1946, has reported an additional type specimen 

 of this species at the Academy of Natural Sciences of Philadelphia 

 as follows: ''simulatus Wish. Type. Left wings and right hind wing 

 intact, much rubbed, sex not determined." The original description 

 of simulatus represents the first instance in which the generic name, 

 Acrolophus, was applied to a North American species. 



