NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 611 



consisting of several irregular, flattened, platelike, very weakly 

 sclerotized, dorsolateral areas; dorsodextral area near apex armed 

 with minute, acute, well sclerotized spine superficially appearing as 

 cornutus of adjacent vesica; narrow area along dorsal margin of 

 apical half of aedeagus armed with 8-10 extremely smaU and indistinct 

 spines directed distad. 



Vesica rather large, membranous, densely infolded, with subdigitate 

 sinistral expansion. Portion of membrane within aedeagus armed 

 with at least two cornuti: apical cornutus located just inside apical 

 opening of aedeagus and embedded in membranous ventral pouch, 

 rather elongate and slender, well sclerotized, apex acute, directed 

 distad; basal cornutus located within basal half of aedeagus and 

 embedded in membranes, larger than apical cornutus, well sclerotized, 

 directed distad, otherwise indistinct because of its location. 



This membrane enclosed within the aedeagus may represent the 

 penis or perhaps a portion of the vesica retracted into the aedeagus. 

 In the latter case, this might occur normally in the insect or it might 

 have been caused inadvertently during the process of dissection. 

 In any event, the flexibility of this membrane indicates that these 

 cornuti could easily be extruded through the apical opening of the 

 aedeagus during copulation, and thus appear as armature of the vesica. 



Type. — Type cf (type no. 9905) in the U.S. National Museum. 



Type locality. — Hot Springs, Ariz. 



Distribution. — Southwestern United States. Arizona, New 

 Mexico, and (?) Texas. 



Sources of material. — California Academy of Sciences (1 9); 

 New Mexico College of Agriculture and Mechanic Arts (1 cf). 



Specimens examined. — 2 (1 cf , 1 9), from 2 locahties: 



New Mexico: State College, Dona Ana Co., cf (July 8, 1945, collector un- 

 known); Busck, in his original description, also reported this species from Las 

 Cruces, Dona Ana Co., New Mexico. Texas: Terlingua, Brewster Co., ? 

 (May 6, 1927, J. O. Martin). 



Remarks. — This smaU species, apparently quite rare in collections, 

 undoubtedly ranges southward into Mexico. The 9 listed above has 

 been only tentatively associated with the cf of jpunctellus. 



A. punctelliLS is generally related to furcatus, the two comprising a 

 small species group in which the relationship is not exceedingly close. 

 These two species may be easily distinguished from each other, as 

 well as from the other acrolophids here treated, by their distinctive 

 harpes and aedeagi. 



I have examined the type cf specimen at the U.S. National Museum. 

 It is labeled "NeolophiLS punctatus Busck, type no. 9905, Hot Springs, 

 Arizona, June 27." Its genitalia had been removed and mounted on 



