714 



ARTHROPOD A 



The male is 3-35 by 1-55 millimetres, with a scutum covering the 

 dorsal surface, except at the sides and back. External apophysis 

 with only two teeth. 



Eurhipicephalus evertsi Neumann, 1897. 



This is the red-leg tick, which spreo-dsNuftallia equi, and is found 

 in Europe, Africa, and Asia. The life-history resembles Eurhipi- 

 cephalus appendiculatus in the changes of host by larva and nymph. 

 The infection is acquired in the nymphal stage, and transmitted 

 by the adult. Size: male, 5 to 6 by 3 to 4 millimetres; female, 

 14 by 9 millimetres. 



Margaropus Karch, 1879. 



Synonyms. — Bodphilus Curtice, 1891; Rhipicephalus Neumann, 

 1897. 



Rhipic&phalincB with eyes, though often indistinct; base and 

 capitulum broader than long. Palpi short and broad; second 

 and third segment thicker in the middle, and forming a sharp angle 

 externally. Posterior margin of the first coxa slightly bidentate; 

 stigmal plate round. Body without marginal festoons; anal 

 groove absent. Male with two pairs of anal plates. 



T^^Q— Margaropus annulatus Say, 1821. 



Only three or, according to Neumann, two species, of which two 

 species [M. annulatus, M. decoloratus) may be one, the third being 

 M. lounshuryi Neumann, 1907. 



Margaropus annulatus Say, 1821. 



Synonyms. — Ixodes annulatus Say, 1821; Hcemaphysalis rosea 

 Koch, 1844; Ixodes bovis Riley, 1869; Margaropus winthemi Karsch, 

 1879; Bodphilus bovis Curtice, 1880; and several others. 



Female with elliptical body, as wide in front as behind. Scutum 

 very small. Eyes smiall. Dorsal surface, with two antero-posterior 

 grooves, interrupted towards their middle. Ventral surface with 

 small sexual aperture and sexual furrows. Stigmata oval. Capi- 

 tutum very short. Internal apophysis of mandible conical; the 

 external with three teeth. Hypostome broad. Palpi very short. 

 Legs short Fig. 313). 



Male with body oval, 2-15 by 2-35 millimetres, narrow anteriorly;- 

 widest opposite stigmata. Scutum brown-red, covering the whole 

 dorsal surface with large punctata. Sexual orifice large, a little 

 in front of the level of the second pair of legs. Festoons hardly 

 marked. Two pairs of clypeal shields. Internal apophysis of the 

 mandibles with bifid point; the external has two teeth. Coxa of 

 first leg with a blunt anterior process and bifid posteriorly. 



This tick has a very wide geographical distribution, being found in 

 North and South America, the West Indies, Africa, Europe, Japan, 

 and Australia; but the different countries show certain variations 

 in the tick, and hence the species receive a little change in 

 the name. 



