644 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



cept for small, glabrous, dorsobasal area; basal half slender, with 

 margins subparallel, curving somewhat dorsad ; apical half moderately 

 expanding distad, curving considerably ventrad; apex broad, truncate, 

 with dorsal extremity rounded, ventral extremity angulate. 



Transtilla with arm very short, approximately one-seventh as long 

 as harpe, broad, well sclerotized, glabrous, rather closely subparallel 

 with dorsal margin of costa, terminating acutely considerably distad 

 of basal extremity of harpe. 



Uncus simple. Dorsal aspect: base small, concave beneath, set 

 off from tegumen by areas of reduced sclerotization ; glabrous except 

 for small, finely punctate and setose, caudolateral areas; lateral margins 

 well sclerotized, strongly converging distad into base of uncal process; 

 uncal process elongate, rather robust, curving caudoventrad, well 

 sclerotized, with faint trace of median longitudinal suture, major 

 portion glabrous, apical third finely punctate and setose ventrad, nar- 

 ro^ving only slightly to subacute apex. 



Gnathos fused, large, flattened dorsoventrad, directed caudoventrad, 

 large mesobasal portion membranous to weakly sclerotized, apical por- 

 tion finely but densely scobinate entad, lateral margins heavily sclero- 

 tized and converging distad into smoothly and evenly rounded apex. 



Anellus large, membranous, unarmed but with portion encircling 

 aedeagus weakly sclerotized and suggesting trace of juxta. 



Aedeagus approximately two-thirds as long as harpe, slender, cylin- 

 drical, asymmetrical, sublinear in dorsal and ventral aspects, basal 

 extremity and approximate apical third curving considerably ventrad 

 in lateral aspect, base weakly expanded laterad and emarginate mesad, 

 rather small apical portion opening dorsad; apex irregularly rounded 

 and with dextral margin produced distad into small, well sclerotized, 

 acute, spinelike process. 



Vesica small, membranous, unarmed. 



Type. — Holotype cT (type no. 61446) in the U.S. National Museum. 



Paratypes (3 cTcf ). — U.S. National Museum (3 <^&). 



Type locality. — Chiricahua Mountains, Cochise Co., Ariz. (Aug. 

 16-23, collector unknown). 



Distribution.- — Southwestern United States. Southern Arizona. 



Specimens examined: 4 (all cf cf ), from 2 localities: 



Arizona: Chiricahua Mountains, Cochise Co., cf (June 16-23, collector un- 

 known), cf (Aug. 16-23, collector unknown), cf (date and collector unknown, 

 labeled "Felderia dorsimacula Dyar" in Dyar's handwriting); locality and date un- 

 known, cT ("So. Arizona," 0. C. Poling). 



Remarks. — This species undoubtedly ranges southward into Mexico. 

 It appears to be quite rare in collections. Although A. chiricahuae 

 is not closely related to any of the other acrolophids known to occur 

 in America north of Mexico, its strongly bipectinate antennae, naked 



