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Clarification of the Rhipicephalus sanguineus group (Acari, Ixodoidea, Ixodidae). II. R. sanguineus (Latreille, 1806) and related species

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Abstract

In this, our second study on the biosystematics of the Rhipicephalus sanguineus group, we consider an additional five species found in the Afrotropical region, namely R. sanguineus, R. camicasi, R. guilhoni, R. moucheti and R. bergeoni.

Cross-breeding experiments have shown that R. sanguineus (Latreille, 1806) sensu stricto is genetically distinct from R. camicasi Morel, Mouchet & Rodhain, 1976. Further cross-breeding trials confirmed that R. camicasi also occurs in Saudi Arabia: a field strain from this country was more productive than a laboratory-reared strain from Egypt. R. sanguineus, which parasitises mainly dogs, probably occurs throughout the Afrotropical region. R. camicasi parasitises both large and small domestic ruminants and is restricted to the arid and semi-arid lowlands of northeastern Africa and the Arabian peninsula. The larva, nymph, male and female of these two last named species are described with the aid of scanning electron micrographs (SEMs).

The two western African species, R. guilhoni Morel & Vassiliades, 1963 and R. moucheti Morel, 1964, are accepted as valid members of the R. sanguineus group, but we have little material available for critical study. The male and female of R. guilhoni are briefly redescribed with the aid of SEMs.

R. bergeoni Morel & Balis, 1976 occurs predominantly on cattle in the wetter highlands and subhighlands of Ethiopia and Sudan. The male and female are briefly described. Current morphological and ecological data suggest that the inclusion of this species in the R. sanguineus group is questionable.

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Authors and Affiliations

  1. School for Biological Sciences, Brunel University, Uxbridge, England

    R. G. Pegram

  2. FAO: GCP/ZAM/029/DEN, P.O. Box 30563, Lusaka, Zambia

    R. G. Pegram

  3. Department of Health and Human Services, Public Health Service, National Institutes of Health, National Institute of Allergy and Infectious Diseases Department of Entomology, Museum Support Center, Smithsonian Institution, Washington, DC, 20560, USA

    J. E. Keirans

  4. P.O. Box 1230, Hamilton, MT, 59840, USA

    C. M. Clifford

  5. Veterinary Research Institute, P.O. Onderstepoort, South Africa, 0110

    Jane B. Walker

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  1. R. G. Pegram
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  2. J. E. Keirans
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  3. C. M. Clifford
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  4. Jane B. Walker
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Pegram, R.G., Keirans, J.E., Clifford, C.M. et al. Clarification of the Rhipicephalus sanguineus group (Acari, Ixodoidea, Ixodidae). II. R. sanguineus (Latreille, 1806) and related species. Syst Parasitol 10, 27–44 (1987). https://doi.org/10.1007/BF00009100

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