12 U.S. NATIONAL MUSEUM BULLETIN 248 posthumous 



of the legs, especially coxae and femora, differ somewhat in shape from 

 the neotropical species of Colaptes. 



The basal plate and the parameres are shorter, the endomeral sac 

 slightly different, and the movable sclerite differs decidedly in shape from 

 those of M. henii (see figures). 



Represented by a large series of both sexes, all paratypes. The types 

 will be deposited with the Catholic University of Valparaiso, together 

 with most of the paratypes, many of which are in poor condition. Several 

 pairs of paratypes will remain in the author's collection. 



Note on setae of M. pitius: Setae of posterior margin of tergites fewer in 

 number, segments IV and V having but 8 on each side (excluding lateral 

 angle), while in M. pici pici there are 15 on each side. Setae of posterior 

 margin of sternites also fewer in number. Measurements follow preceding 

 species. 



Menacanthus ceophloeus ceophloeus, new species 



FiGUitE i:6,a,i 



Types, cf and 9 adults, from Dryocopus lineatus mesorhynchus (Cabanis 

 and Heine), collected by the author at Guapiles, Costa Rica, March 1903. 

 Type in USNM. 



Diagnosis: Head narrower, longer (proportionately) than in the above 

 species, parasitic on the genus Colaptes, with almost circular, wide frons 

 and with temples smaller and narrower, the difference in width between 

 frons and temples being considerably less; chaetotaxy of head of same 

 pattern, but the four setae on the occipital margin are longer. 



The sternal pleurites are clearly visible and bear 5-7 short stout setae; 

 only sternite VHI visible with flatly rounded posterior margin bearing 

 6-9 fine, short setae on each side ; the fairly long setae of posterior margin 

 of sternites range from five on I, to ten on IV, and six on VIII; tibiae 

 longer and more slender, but with same arrangement of spines. 



Male genitalia differ considerably in detail, especially the basal portion 

 of the basal plate, while the endomeral sac is smaller, especially shorter, 

 and with movable sclerite unusually small and without chitinized margins. 



Represented by $ holotype, cf allotype, and 3 99 paratypes. Meas- 

 urements follow next species. 



Menacanthus ceophloeus chocoanus, new subspecies 

 FiGtmE i:^,c,d 



Types, cf and 9 adults, from Dryocopus lineatus nuperus (Peters), collected 

 by the author at Acandi, Dept. of Choco, Colombia, Jan. 6, 1950. Type 



in USNM. 



