102 Fleas of Eastern United States 



CATALLAGIA ROTHSCHILD 

 Catallagia Rothschild, 1915, Ectoparasites, 1:41. 



Genotype: Pulex charlottensis Baker 



Frontal tubercle prominent, peglike, and acuminate. Eye 

 vestigial. Pronotal ctenidium consisting of about seven spines 

 on a side. Inner surface of the hind coxa with a patch of short 

 spines. Fifth segment of the fore and middle tarsi with four 

 lateral pairs of plantar bristles and a basal ventral pair; fifth 

 segment of the hind tarsi with four lateral pairs, the ventral 

 pair absent. 



This genus is represented in the East by two rare species 

 which occur on wild mice. Each is known from one sex only. 

 In the absence of adequate material it is best to leave them as 

 originally described, although it is not unlikely that they are 

 the two sexes of a single species. If this should prove to be the 

 case, then C. borealis Ewing (March, 1929) would have priority 

 over C. onaga Jordan (September, 1929) . 



Catallagia borealis Ewing 

 (Plate XXVIII, figs. 146, 147) 



1929 Catallagia borealis Ewing, Proc. Bio. Soc. Washington, 42: 125. 



Female. Preantennal region of the head with two oblique 

 rows of bristles; the upper row consisting of five or six bristles, 

 the lower row of four, with the second from the antenna the 

 smallest. Postantennal region with three rows of four to six 

 bristles each (Plate XXVIII, fig. 146) . Pronotum armed with a 

 single row of bristles. Meso- and metanotum each armed with 

 three or four irregular rows of bristles. Each abdominal 

 tergite armed with two rows of bristles; the anterior tergites 

 further armed with one to three stout dorsal teeth on a side. 

 Three antepygidial bristles present on a side, of which the 

 middle is the longest. Sternite VII divided by a deep sinus into 

 two lobes, of which the upper is more sharply denned than the 

 lower (Plate XXVIII, fig. 147). Unfortunately, the recepta- 

 culum seminis has been destroyed in the single specimen 

 known. 



Male. Undescribed. 



Eastern host. Meadow-mouse (Microtus pennsylv aniens 

 pennsylv anicus (Ord) ) . 



Eastern locality. Maine. 



Type material. Female holotype from Microtus pennsyl- 



