NO. 4 FLEA GENUS PEROMYSCOPSYLLA — JOHNSON AND TRAUB 3I 



The range of P. scotti is apparently the eastern half of the United 

 States. 



Records of Specimens Examined 



United States. Kansas: Douglas County (Peromyscus leucopus). Mary- 

 land: Montgomery County {Peromyscus sp.). Massachusetts: Dukes County 

 (F. leucopus fustis). Missouri: Ozark County, "wild mouse." New York: 

 Tompkins County (Blarina brevicauda, Clethriononiys gapperi, Peromyscus 

 leucopus). North Carolina: Halifax County (Peromyscus sp.). Oklahoma: 

 Comanche County (Peromyscus sp.). South Carolina: Georgetown County 

 (Peromyscus sp.). 



PEROMYSCOPSYLLA SELENIS (Rothschild, 1906) 



Figures 53-58, 114 



Ctenopsyllus selenis Rothschild, Canadian Ent., vol. 38, p. 322, fig. 43, 1906. 



Lcptopsylla selenis Jordan, Nov. Zool., vol. 34, p. 186, 1928. 



Ctenopsylla selenis Wagner, Akad. Nauk S.S.S.R. Zool. Inst., Parazitol. 



Sbornik (Mag. Parasitol. A'lus. Zool. Acad. Sci.), Leningrad, vol. i, p. 148, 



pi. 13, fig. 94, 1930. 

 Ctenopsyllus selensis (sic) Harkema, Ecol. Monogr., vol. 6, p. 209, 1936. 

 Peromyscopsylla duma Traub, Field. Mus. Nat. Hist. Publ., zool. ser., vol. 29, 



p. 217, 1944 (new synonymy). 

 Peromyscopsylla selenis Til\ub, Field Mus. Nat. Hist. Publ., zool. ser., vol. 29, 



p. 217, 1944. — Hubbard, Fleas of western North America, p. 334, fig. 200, 



1947. 

 Peromyscopsylla duma Hubbard, Fleas of western North America, pp. S33, 334> 



fig. 200,a, 1947. 

 Peromyscopsylla selenis Holland, Canada Dept. Agr. Techn. Bull. No. 70, 



pp. 175, 178, pi. 40, figs. 331-333, map 42, 1949. 



Head. — As in hesperomys except: with six long bristles on pre- 

 antennal area (discounting marginals and subdorsals) (fig. 55), not 

 five (fig. i) ; upper genal spine the longer, genal lobe (G.L.) not 

 extending one-half length of lower genal spine.^ Bristles on second 

 antennal segment not reaching beyond second segment of club in both 

 sexes. 



Thorax. — As in hesperomys except no erect bristles present dorsally 

 on mesonotum. 



Abdomen. — Male with three antepygidial bristles, female with three 

 or four. 



Male. — Eighth tergum mediolaterally with two rows of three or four 

 bristles each, bristles of second row quite long. Eighth sternum (fig. 

 53) very broad, slightly rounded apically; bearing seven to nine long 



2 Figure 54 illustrates a male unique in that on one side it bears three genal 

 teeth. This is probably atavistic in origin and is one of two cases observed while 

 studying hundreds of Peromyscopsylla. Specimen ex Clethriononiys sp., Plumas 

 County, Calif., E. W. Jameson. 



