Pristocera masii: rediscovery of the holotype and its transfer to Acrepyris (Hymenoptera: Bethylidae)

Alencar Isabel D. C. C., Colombo Wesley D., Azevedo Celso O.
Acta Entomologica Musei Nationalis Pragae 56(2): 795-803, 2016
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Abstract: We report the rediscovery of the holotype of Pristocera masii Soika, 1933 (Hymenoptera: Bethylidae: Pristocerinae), originally described from a single male from Venice, Italy. The holotype was considered lost but during a scientific visit at the Museo Civico di Storia Naturale “Giacomo Doria” in Genova, Italy we were able to find the holotype. Here we provide a detailed redescription, with photographs and drawings of the main diagnostic characters delimiting this species. Pristocera masii is transferred into Acrepyris Kieffer, 1905 because its hypopygium is simple, not deeply divided as in Pristocera Klug, 1808, and its aedeagus has three distinct valvae, a remarkable and exclusive feature of Acrepyris. The resulting new combination, Acrepyris masii (Soika, 1933), is established here.
Key words: Hymenoptera, Bethylidae, Pristocerinae, Acrepyris, Pristocera, new combination, holotype, Italy, Palaearctic Region
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