126 U.S. NATIONAL MUSEUM BULLETIN 261 



apex truncate and slightly concave, with a few setae arranged serially 

 behind preapical lobe. Connective U- or Y-shaped, not keeled medially. 

 Aedeagus symmetrical, with at least a pair of apical processes, and 

 occasionally with processes at base or near middle. Paraphyses present 

 or absent, when present reduced and occurring as a single transverse 

 sclerite at base of aedeagal shaft. 



Female abdominal sternum VII truncate and Vvith posterior margin 

 slightly undulate. 



This genus appears to be restricted to a region near the Atlantic 

 coast of South America. All but one of the specimens studied were from 

 the region from Trinidad and Venezuela to Rio de Janeiro. The one 

 (possible) exception is labeled "Amazonas." Acrocampsa is very closely 

 related to Peltocheirus, from which it can be distinguished by the 

 characters set forth in the key. 



The lectotype oi A. maculata (Walker) agrees well with the illustration 

 (fig. 115) of the female lectotype of A. rutilans (Fabricius); the latter 

 species, however, is probably the same as A. pallipes (Fabricius). The 

 male lectotypes of ^. pallipes (Fabricius) and oi A. rufa Melichar have 

 genitalia like figure 116. The male lectotype oi A. Integra Melichar has 

 genitalia like figure 117. The male holotype of yl. diminuta (Walker) is 

 like figure 118, except that its style apices are slightly broader and 

 slightly more concave. 



SPECIES OF ACROCAMPSA 



[f Known only from female type.] 



bakeri, new species. Brazil. 



diminuta (Walker), 185Ib:801 {Ciccus). Brazil, SE. Brazil. 



Integra Melichar, 1925a:339. Venezuela, Trinidad Is. 



pallipes (Fabricius), 1787a:261 (Fulgora). Trinidad Is., Venezuela, Fr. Guiana. 



rufa Melichar, 1925a:339. New synonymy. 

 radiata, new species. Brazil. 

 rutilans (Fabricius), I803a:64 (Cicada). Brazil. 



]maculatus (Walker), I851b:801 (Ciccus). 



KEY TO MALES OF ACROCAMPSA 

 Not included: rutilans (Fabricius) (fig. 1 15), known only from female. 



1. Aedeagus with a broad apical quadrate flange in caudoventral 



aspect, with each of the corners of the flange produced into a 



process A. bakeri, new species 



Aedeagus not so 2 



2. Aedeagal apex with six radiating processes. 



A. radiata, new species 

 Aedeagus with only two apical processes 3 



