Abnormal development of Rhipicephalus sanguineus (Ixodidae).
Three malformed Rhipicephalus sanguineus specimens were noticed in a tick laboratory colony. These specimens had different degrees of twining, from an almost fused individual (with two anal pores) to a partially fused adult male, with four spiracular plates. One female was a heart-shaped specimen. with both body halves fused along a longitudinal axes, with four spiracular plates and two anal pores.
Facultad de Veterinaria, Unidad de Parasitología, Zaragoza, Spain. aestrada@posta.unizar.es
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Estrada-Peña
D000818:Animals; D005260:Female; D026863:Ixodidae / Q000033:anatomy & histology / Q000254:growth & development*; D008297:Male