New and earlier records of ticks (Acari : Ixodidae, Argasidae) from Guinea-Bissau

Ticks were collected from pastures and domestic and wild vertebrates during the rainy seasons of 1994 and 1996 in Guinea-Bissau. We collected the following species: from pastures Rhipicephalus lunulatus Neumann, R. muhsamae Morel & Vassiliades, R. senegalensis Koch, and R. sulcatus Neumann; from reptiles Amblyomma nuttalli Donitz and Aponomma flavomaculatum (Lucas); and from mammals Amblyomma paulopunctatum Neumann, Amblyomma splendidum Giebel, Amblyomma variegatum (F.), Hyalomma truncatum Koch, R. muhsamae, R. sanguineus (Latreille), R. senegalensis, and R. sulcatus. New host records are as follows: Amblyomma nuttalli on Senegal nap shelled turtle (Cyclanorbis senegalensis Dumeril & Bibron), Aponomma flavomaculatum on West African dwarf crocodile (Osteolaemus tetraspis Cope), and R. sulcatus on bushbuck (Tragelaphus scriptus Pallas). We reviewed the literature for earlier records of ticks from Guinea-Bissau. The regional distributions of the 21 tick species hitherto recorded in Guinea-Bissau are listed.