24 Fleas of Eastern United States 



lumbia, Florida, Georgia, Iowa, Maryland, Massachusetts, New 

 Jersey, North Carolina, Tennessee, Virginia, Wisconsin. 



Type material. Male holotype on "he-pus species" from 

 Michigan in the United States National Museum. 



CTENOCEPHALIDES STILES AND COLLINS 



Ctenocephalides Stiles and Collins, 1930, United States Public Health Rep., 

 45: 1308 (new name for Ctenocephalus Kolenati, preoccupied) . 



Genotype: Pulex canis Curtis 



Both a genal and a pronotal ctenidium present. Genal 

 ctenidium more or less horizontal, consisting of long sharp 

 spines. Frontal incrassation distinct. Ocular bristle placed on 

 a level with or above the eye. 



This genus is represented in the East by two exceedingly 

 common species, the dog flea and the cat flea. Typical forms of 

 these two species may be separated by the following key: 



Key to the Eastern Species of Ctenocephalides 



First genal spine much shorter than the second; head about one and one- 

 half times as long as high C. cants 



First genal spine about as long as the second or only slightly shorter; 

 head about twice as long as high C. jelis 



Ctenocephalides felis (Bouche) 

 (Plate VI, figs. 22, 23, 25) 



1835 Pulex felis Bouche, Nov. Act. Acad. Leop. Carol.. 17:505. 



1901 Pulex felis Rothschild, Ent. Rec, 13: 126, PI. Ill, fig. A. 



1905 Pulex felis Rothschild, Nov. Zool., 12: 192, fig. B. 



1910 Ctenocephalus felis Banks, United States Public Health and Mar. 



Hosp. Ser., Bull. 30, p. 75. 

 1925 Ctenocephalus felis C. Fox, United States Public Health Rep., 40: 1917. 

 1925 Ctenocephalus felis C. Fox, Insects and Disease of Man, p. 136. 



1928 Ctenocephalus felis Stewart, Cornell Univ. Agric. Exp. Sta., Mem. 

 101, p. 868. 



1929 Ctenocephalus felis Ewing, Manual External Parasites, p. 165, figs. 

 89, 92. 



1929 Ctenocephalus felis Jordan, Nov. Zool., 35: 176. 



1930 Ctenocephalides felis Stiles and Collins, United States Public Health 

 Rep., 45:1308. 



1933 Ctenocephalides felis Stewart, Jour. New York Ent. Soc, 41:254. 



1934 Ctenocephalides felis Shaftesbury, Jour. Elisha Mitchell Sci. Soc, 

 49: 252. 



1937 Ctenocephalides felis Jordan, Nov. Zool., 40:283. 



Male. Preantennal region of the head with but two bristles, 

 one located near the eye, the other at the base of the third genal 



