Apicystis gen nov and Apicystis bombi (Liu, Macfarlane & Pengelly) comb nov (Protozoa: Neogregarinida), a cosmopolitan parasite of Bombus and Apis (Hymenoptera: Apidae)J.J. Lipaa and O. Triggianib
a Institute of Plant Protection, Miczurina 20, 60-318 Poznan, Poland
b Istituto di Entomologia Agraria, Universita degli Studi, via Amendola 165/A, 70125 Bari, Italy
Abstract - A new genus Apicystis and a new combination Apicystis bombi (Liu, Macfarlane & Pengelly) is proposed for a neogregarine parasitic on Bombus spp and Apis mellifera. The genus Apicystis is characterized by having navicular oocysts containing only four sporozoites and basically differs from the genus Mattesia which has spindle oocysts with eight sporozoites. This parasite was recorded in ten species of Bombus in Europe and North America, but has been observed only once in Apis mellifera in Finland.
Key words: Apicystis / Apis / Bombus / new genus / protozoan / parasite