14 U.S. NATIONAL MUSEUM BULLETIN 248 posthumous 



Diagnosis: Closely related to ceophloeus ceophbeus, with same pattern of 

 abdominal chaetotaxy, but differs from it as follows: Body length greater 

 in both sexes; frons wider and more circular; temples wider (longitudinally), 

 with occipital margin less concave, so that length of head at occiput 

 is the same in both races but longer at temples in ceophloeus chocoanus. 



Pro- and pterothorax wider and longer (except length of prothorax in 

 9, which is the same) ; chaetotaxy of abdomen the same but brushes of 

 setae on third femora sparser in C. chocoanus and tibiae slightly wider, espe- 

 cially first pair. Pleurites (not shown in figure) are sternal and equal in 

 size with those of C. ceophloeus, with the same accompanying short setae, 

 but in only one female out of nine examined are they visible, being com- 

 pletely concealed by the tergites. The abdominal chaetotaxy of the male 

 is the same as that of the female, but since the male is smaller, the abdomen 

 has the appearance of being more densely hirsute. 



The d^ genitalia differ considerably. The basal plate is longer and 

 differs in shape basally ; the parameres are longer and the movable sclerite 

 much wider basally, of different shape and with the narrow, chitinized 

 margins more pronounced on one side. Represented by 9 holotype. 

 d^ allotype, and 4 cf cf and 8 99 paratypes. 



Measurements of the types are given below. 



M.c. ceophloeus M.c ceophloeus M.c. chocoanus M.c. chocoanus 



Menacanthus exsanguis exsanguis (Paine and Mann) 



Figures \:l,afi,c 



Menopon exsanguis Paine and Mann, 1913, Psyche, vol. 20, no. 1, p. 19, fig. 4, Host: 

 Campophilus melanoleucus. 



Menacanthus exsanguis. — Hopkins and Clay, 1952, Checklist of Mallophaga, p. 210. 

 Host: {Campophilus melanoleucus)— Phloeoceastes melanoleucus? albirostris (Vieillot) 

 [=Phloeoceastes m. melanoleucus (Gmelin)]. (The host for this species is given in 

 the 1952 Checklist as P. melanoleucus albirorostris (Vieillot), but Paine and 

 Mann give the host as P. m. melanoleucus and state that all hosts were collected 

 and identified by Dr. E. Snethledge and were from the Museu Emilio Goeldi, 

 Para, Brazil, thus clearly within the range of P. m. melanoleucus.) 



