Family Dolichopsyllidae Baker 45 



Oropsylla arctomys (Baker) 



(Plate IX, figs. 40, 41, 43) 



1904 Ceratophyllus arctomys Baker, Proc. United Stales Nat. Mus., 27:388. 



1905 Ceratophyllus arctomys Baker, Proc. United States Nat. Mus., 29: 134. 

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



101, p. 869. 



1928 Ceratophyllus arctomys Jordan, Nov. Zool., 34: 183. 



1929 Ceratophyllus arctomys Jordan, Nov. Zool., 35: 176. 

 1929 Oropsylla arctomys Wagner, Konowia, 8:315. 



1933 Oropsylla arctomys Stewart, Jour. New York Ent. Soc., 41:258. 

 1933 Oropsylla arctomys Jordan, Nov. Zool., 39: 73. 

 1937 Oropsylla arctomys Jordan, Nov. Zool., 40:284. 



Male. Preantennal region of the head armed with two rows 

 of bristles, each consisting of three. A number of small setae 

 near the anterior and posterior margins of the antennal groove. 

 Posterior margin of the head armed with three or four bristles; 

 one located at the lower angle, the other two or three situated 

 dorsad. Postantennal region further armed with a robust 

 bristle situated near the second antennal joint. Pronotum with 

 a single row of alternating long bristles and weak setae. Meso- 

 and metanotum each armed with two rows of bristles anterior 

 to which there may be several other bristles. Metanotum and 

 anterior abdominal tergites further armed with one or two 

 stout dorsal teeth on a side. Each abdominal tergite with two 

 rows of bristles. Modified segments: Process of the clasper 

 broad and lobular, its dorsal margin armed with three or four 

 slender bristles. Movable finger large, convex at both margins, 

 the posterior margin armed with four or five bristles. Manu- 

 brium short, ending in a curved point. Penis broad and heavy, 

 terminating in a slender curved process; spring long, complet- 

 ing a turn. Sternite VIII armed with five or six stout bristles on 

 the posterior margin and two or three curved bristles apically. 

 For further details concerning the structure of the male geni- 

 talia, see Plate IX, fig. 40. 



Female. General structure and chaetotaxy of the head es- 

 sentially as in the male (Plate IX, fig. 41) . Sternite VII without 

 a deep sinus. Head of the receptaculum seminis longer than 

 wide, longer than the tail. For further details concerning the 

 female genitalia, see Plate IX, fig. 43. 



Records. CONNECTICUT— No specific locality, July, 1892, 

 on "woodchuck," male; Monroe, on same host, two females, two 

 males (G. Dimmock) . IOWA — Ames, July, 1935, on "wood- 

 chuck," two males, five females (R. L. Roudabush) ; Jewell, 



