Family Pulicidae Stephens 19 



Pulex irritans Linnaeus 



(Plate V, figs. 17, 19, 21) 



1758 Pulex irritans Linnaeus, Systema Naturae, p. 614. 



1761 Pulex irritans Linnaeus, Fauna Suecica, No. 1965, p. 479. 



1895 Pulex irritans Baker, Can. Ent., 27: 67. 



1896 Pulex irritans Osborn, United States Dept. Agric. Div. Ent., Bull. V 

 (n.s.), p. 147, fig. 80. 



1904 Pulex irritans Baker, Proc. United States Nat. Mus., 27:379, PI. XI, 

 figs. 3-6. 



1905 Pulex irritans Baker, Proc. United States Nat. Mus., 29: 129. 



1910 Pulex irritans C. Fox, United States Public Health and Mar. Hosp. 



Ser., Bull. 30, p. 142, PI. V, figs. 1-4. 

 1914 Pulex irritans C. Fox, United States Public Health Ser. Hyg. Lab., 



Bull. 97, PL XIV, fig. 21; PI. XXI, fig. 64. 

 1925 Pulex irritans C. Fox, Insects and Disease of Man, p. 132, fig. 60. 



1928 Pulex irritans Stewart, Cornell Univ. Agric. Exp. Sta., Mem. 101, 

 p. 868. 



1929 Pulex irritans Jordan, Nov. Zool., 35: 176. 



1929 Pulex irritans Ewing, Manual External Parasites, p. 164, fig. 91. 

 1931 Pulex irritans Ewing, Amer. Nat., 65: 363. 



1933 Pulex irritans Stewart, Jour. New York Ent. Soc, 41: 254. 



1934 Pulex irritans Shaftesbury, Jour. Elisha Mitchell Sci. Soc, 49:250. 



Male. Preantennal region of the head with but two long 

 bristles, one situated near the eye, the other at the base of the 

 maxilla. Dorsal region of the head with numerous minute setae. 

 First antennal segment with three or four bristles of various 

 sizes; second antennal segment with five or six long bristles. 

 Mandible distinctly serrated. Labial palpus reaching beyond 

 one-half the length of the anterior coxa. A series of small setae 

 situated posterior to the third antennal segment; remainder of 

 the postantennal region with but a single bristle. Each segment 

 of the thorax with a row of bristles consisting of alternating 

 long and short bristles. Modified segments: Clasper with two 

 movable processes arranged to form pincers; about these proc- 

 esses is a broad conspicuous flap supplied with numerous 

 slender curved bristles along the margins. Posterior movable 

 process of the clasper with four or five small bristles; anterior 

 process without distinct bristles. Manubrium rather short, 

 distally curved and finger-like. Penis not wide, blunt and 

 rounded anteriorly; spring long, completing at least one turn. 

 For further details concerning the structure of the male geni- 

 talia, see Plate V, fig. 17. 



Female. Chaetotaxy of the head (Plate V, fig. 21) and gen- 

 eral structure essentially as in the male. Sternite VII without 



