A New Genus and Species of Pteromalidae (Hymenoptera, Chalcidoidea) from Spain, Parasitic in Cynipid Balls on Fumaria

6 páginas, 18 figuras.
Neaylax versicolor (Hymenoptera, Cynipidae), which forms galls on fumitory (Fumaria), is attacked in Spain by Rivasia fumariae, a species of Pteromalidae (Hymenoptera, Chalcidoidea) herein described as new and assigned to a new genus. The new genus has an unusual combination of morphological characters but seems best placed in the pteromalid subfamily Ormocerinae. An account is given of the biology and larval morphology of the new species.
We are grateful to the European Commission Human Potential Programme under BIODIBERIA that enabled R.R.A. to work for a time in 2003 (project 161) in the Museo Nacional de Ciencias Naturales, Madrid.