202 



Genus Ixodes 



23. IXODES ACUTITARSUS (Karsch, 1880). 



Fig. 195. 



Lit., Synon. and Icon. : Haemalastor acutitarsus Karsch, 1880, p. 142 (Latin 



description in five lines ; quite insufficient). 

 Ixodes laevis Neumann, 1899, p. 148, Fig. 21 (reproduced); recognized as 



/. acutitarsus by Neumann (1901, pp. 285, 290) after examining Karsch's 



type. 

 Ixodes acutitarsus Karsch, in Neumann, 1899, p. 180; 1901, p. 286. 

 Eschatocephalus acutitarsus Karsch, in Neumann, 1901, p. 290. 



The following description is based partly on Neumann's /. laevis (Paris 

 Mus.), which we have examined. We see no reason why the species should have 

 been regarded as an Eschatocephalus, since the legs are not of inordinate length. 



Male : unknown. 



Female (unfed) : dark brown, very large, 7'5 x 3"8 mm. (Karsch's 

 type measured 8 x 3 - 3 mm.) ; body oval, dorsum convex, broadest behind 

 coxae IV. Scutum cordiform, as broad as long (25 mm., Nn.), the 

 antero-lateral borders slightly convex, one-half the length of the 

 postero-lateral borders which are straight or but slightly concave ; 

 rounded posteriorly ; cervical grooves parallel, then divergent, shallow, 

 attaining the postero-lateral borders ; traces of lateral grooves ; surface 

 glossy, a few fine punctations situated toward the anterior angles. 

 Dorsum convex, smooth ; marginal groove deep and broad, limiting a 

 broad marginal fold which is slightly incised by the dorsal extension of 

 the ventral grooves ; a few very short hairs. Venter : vulva facing 

 coxae IV, sexual grooves subrectilinear, divergent ; anal grooves rounded 



Fig. 195. I. acutitarsus J : (1) dorsum; (2) digit, 265/i'-> and (3) coxae. (Neumann, 

 1899, Fig. 21 of I. laevis Nn.) 



