THE FLEAS OF NORTH AMERICA 31 



This genus is represented in America by only three species, but it 

 is well represented in the Old World, where it ranges over much of 

 Europe and central and northern Asia. The species are parasitic 

 chiefly -on rodents of the family Muridae and carnivores that feed on 

 these rodents. 



Amphipsylla ewingi I. Fox 



(Fig. 6, C) 

 Amphipsylla ewingi I. Fox, 1940, Wash. Ent. Soc. Proc. 42: 61, pi. 10, fig. 1. 



Type host. — "Alaska short-tailed mouse." 



Type locality . — Golovin, Alaska. 



Range. — Known only from Alaska. 



This is a medium-sized, dark-brown species which is known only 

 from male specimens. The movable finger of the clasper has two 

 black, posterior, submarginal spines, the upper one being much the 

 shorter and somewhat stouter than the other and situated near the 

 posterodorsal angle. Sternal plate VIII of the male has a distinctive 

 comblike row of long setae on each side near the posterior margin. 



Amphipsylla neotomae I. Fox 



Amphipsylla neotomae I. Fox, 1940, Wash. Acad. Sci. Jour. 30: 273, fig. 3. 



Type host. — Neotoma desertorum Merr. (wood rat). 



Type locality. — Dos Palos, Calif. 



Range. — Known only from the type locality. 



The original description of neotomae was based on a single male 

 and is accompanied by a figure of the clasper. This is the only species 

 of its genus to be reported from the United States. It differs from 

 the other two species of Amphipsylla known from North America in 

 the structure of the male terminalia. 



Amphipsylla sibirica pollionis (Rothschild) 



Ceratophyllus pollionis Rothschild, 1905, Novitates Zool. 12: 171, pi. 9, figs. 28 r 



31, and 32. 

 Amphipsylla sibirica pollionis Wagner, Canad. Ent. 68: 195. 



Cotype hosts. — Microtus drummondii (And. and Bach.) (meadow 

 mouse) and Evotomys saturates Ehoads (red-backed mouse). 



Type locality. — Red Deer, Alberta. 



Range. — Known only from Alberta. 



This subspecies is similar to ewingi I. Fox, but in it the movable 

 finger is much broader at the top and the upper spine on the same is 

 longer and not so stout as in ewingi. Sternal plate VIII has a patch of 

 long setae on each side instead of the submarginal comblike row of 

 ewingi. 



The Genus Tarsopsylla Wagner 



(Fig. 6, B) 



Ctenonotus Kolenati, 1863 (not Fitzinger, 1843), Soc. Ent. Rossicae Horae 2: 34» 



Monotypic. Type, Ctenonotus octodecimdentatus Kolenati. 

 Tarsopsylla Wagner, 1927, Konowia 6 : 108. 



The name Tarsopsylla was proposed by Wagner to replace Ctenono- 

 tus Kolenati, 1863, which was found to be preoccupied. 



