REMARKS 



For a discussion of long-legged parasites of bats, see RE14ARKS 

 under Ixodes vespertilionis . 



A. boueti populations consist of two size groups, the larger 

 about 6,8 mm, long and 6.9 mm, wide and the smaller about 5.0 mm, 

 long and ^,5 mm, wide (Hoogstraal 1955B, figure 125). The signif- 

 icance of these '"races"* is at present being stiidied. 



The subgenus Chiropterargas Hoogstraal, 1955(b), of which A. 

 boueti is the type species, contains one other species. A, confusus . 

 This subgenus is defined as follows: "" 



'"Parasites of which bats are hosts of predilection. Morpho- 

 logical characters intermediate between those of typical Argas and 

 typical Ornithodoros ; with a general Argas f acies but lacking a 

 sutural line; with a flattened body flajige but lacking '"cells'" and 

 with exceedingly slight integurnental differentiation at periphery; 

 body shape circular to transversely elliptical. Integument with 

 fine, close granular projections; discs mostly small, conspicuous, 

 radially distributed, ventral '"paired organ'" present. Definite 

 hood over Tsaouthparts ; mouthparts about level with anterior body 

 nmrgin. Legs of variable length, arising from anterior half of 

 body; tarsal humps lacking,'* 



IDENTIFICATION 



The remarks above incl\ade the outstanding characters for iden- 

 tifying this species and A, confusus . 



The male of A, boueti is somewhat smaller than the female and 

 has a semicircular genital aperture while the female has a narrow, 

 transversely elongate genital aperture bounded by tv;o riigose lips. 

 In both sexes, the body outline is subcircular to pearshaped 

 (definitely wider than long in A. confusus ), leg IV extends far 

 beyond posterior margin of body" (only slightly beyond in A, confusus ), 

 basis capituli and palpal segments comparatively narrov; and elon- 

 gate (globose in A. confusus ), minute integurnental protuberances 

 are mostly flat (mostly tapered in A, confusus ), etc. The dental 

 formula of both species is l/l, the apex of the hypostorae is slight- 

 ly indented, and a corona is laclcing, 



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