106 MISC. PUBLICATION 5 0, U. S. DEPT. OF AGRICULTURE 

 Hoplopsyllus (Hoplopsyllus) anomalus Baker 



(Fig. 12, C) 



Pulex anomalus Baker, 1904, U. S. Natl. Mus. Proc. 27 : 381, pi. 10, figs. 1-6. 

 Hoplopsyllus anomalus Baker, 1905, U. S. Natl. Mus. Proc. 29:128. 



Type host. — "A large gray-brown spermophile." 

 Type locality. — Arboles, Colo. 

 Range. — Western part of the United States. 



The original description of anomalus, based on a single male and 

 female, is accompanied by six detail figures. 



The Subgenus EUHOPLOPSYLLUS Ewing 



Euhoplopsijllus Ewing, 1940, Wash. Biol. Soc. Proc. 53: 37. Type, Holopsyllus 

 afflnis Baker (by original designation). 



Antennal club clavate to strongly clavate, but not capitate, segments separated 

 anteriorly by grooves. Antennal groove partly or entirely open in the male, 

 closed in the female. Clasper of male with a broad, setigerous, anterior process 

 and a slender, fingerlike, posterior process (immovable finger), armed apically 

 with a stout, pigmented, spinelike seta ; movable finger subclavate, almost 

 straight. 



Rabbits and hares are the natural hosts. 



This subgenus includes three species listed in this paper as valid, 

 one of which (glacialis Taschenberg) is circumpolar, the other two 

 being North American only. The species show a high degree of 

 individual variation. 



Hoplopsyllus (Euhoplopsyllus) affinis (Baker) 



Pulefl! a films Baker, 1904, U. S. Natl. Mus. Proc. 27 : 3S2. 

 Hoplopsyllus afiinis Baker, 1905, U. S. Natl. Mus. Proc. 29 : 139. 



Type host. — Lepus sp. (hare). 

 Type locality. — Near Grand Canyon, Ariz. 

 Range. — Western part of the United States eastward to Iowa. 

 This species has recently been figured by I. Fox (25, p. 137). It is a 

 common flea upon different species of rabbits throughout its range. 



Hoplopsyllus (Euhoplopsyllus) exoticus Jordan and Rothschild 



Hoplopsyllus exoticus Jordan and Rothschild, 1923, Ectoparasites 1 : 311, fig. 

 314. 



Type host. — Fells sp. 



Type locality. — Boquete, Panama. 



Range. — Known only from Panama. 



This species was described from a single female. The male is 

 unknown. According to the original description it is similar to lynx 

 Baker, but sternal plate VII of female is "more widely excised be- 

 neath than in H. lynx" and the stylet is "much longer than in H. lynx." 



Hoplopsyllus (Euhoplopsyllus) glacialis glacialis (Taschenberg) 



Pulex glacialis Taschenberg, 1880, Die Flbhe, p. 76, pi. 3, figs. 17-17a. 

 Hoplopsyllus glacialis Baker, 1905, U. S. Natl. Mus. Proc. 29 : 130. 



Type host. — Lepus arcticus Ross (polar hare). 

 Type locality. — "Nordpole." 



