72 Fleas of Eastern United States 



Record. IOWA — Dubuque, November 6, 1937, on Glaucomys 

 volans volans (Linnaeus) , male (T. Scott) . 



Eastern host. Flying Squirrel (Glaucomys volans volans 

 (Linnaeus) ) . (Known also from various rodents in the West.) 



Eastern localities. Iowa, (Western United States and 

 Canada) . 



Type material. Male cotype from Moscow, Idaho, on "Pero- 

 myscus leucopus" in the United States National Museum. 



This species has hitherto been found only in the western half 

 of the country, where it is thought to break into several sub- 

 species. These subspecies have been established by Jordan 

 (1929) almost entirely on the basis of the female genitalia, 

 hence it is not possible to place subspecifically the Iowa male. 

 It is believed, however, that this specimen is referable to M. 

 wagneri wagneri (Baker) . 



Megabothris vison (Baker) 

 (Plate XIX, figs. 95, 98, 99) 



1904 Ceratophyllus vison Baker, Proc. United States Nat. Mus., 27:388. 



1904 Ceratophyllus lucidus Baker, Proc. United States Nat. Mus., 27:388, 

 PI. XX, figs. 5-9. 



1905 Ceratophyllus lucidus Baker, Proc. United States Nat. Mus.. 29:132. 

 1905 Ceratophyllus vison Baker, Proc. United States Nat. Mus., 29:133. 



1928 Ceratophyllus vison Stewart, Cornell Univ. Agric. Exp. Sta., Mem. 

 101, p. 869. 



1929 Ceratophyllus vison Jordan, Nov. Zool., 35:35, 170. 



1933 Ceratophyllus vison Stewart, Jour. New York Ent. Soc, 41: 256. 

 1933 Monopsyllus vison Jordan, Nov. Zool., 39: 78. 



Male. Frontal notch distinct, much lower on the head than in 

 M. wagneri. Labial palpus reaching beyond the middle of the 

 fore trochanters. Chaetotaxy of the head (Plate XIX, fig. 95), 

 and general structure essentially as in M. wagneri. Modified 

 segments: Process of the clasper rather slender and finger-like, 

 much shorter than the movable finger. Movable finger large 

 and broad, the posterior margin concave; armed apically with 

 two slender bristles and one long stout spiniform. the lower 

 angle armed with another long stout spiniform. Manubrium 

 short, blunt terminally. Penis rather long, not ending in a 

 curved process; spring not completing a single turn. For further 

 details concerning the structure of the male genitalia, see 

 Plate XIX, fig. 99. 



Female. Chaetotaxy of the head essentially as in the male 

 except that the bristles of the upper preantennal row may be 

 reduced in size and number. Other general structural details 



