A key to the European species of the Pteromalus altus group is presented. The relationship between this group and species of the genus Euphorbia (Euphorbiaceae) is confirmed. One new species: P. villosae, associated with Euphorbia villosa Waldst. & Kit.is presented. Two new species of the albipennis group: Pteromalus almeriensis and P. costulata are presented. In addition one species of the P. vibulenus group: P. tethys is added. Information on P. sylveni Hedqvist, P. osmiae Hedqvist and P. discors Graham is given.

Additional Metadata
Keywords Chalcidoidea, Pteromalidae, Pteromalus, new species, redescriptions, Spain, Portugal, France, Greece, Euphorbia
Journal Zoologische Mededelingen
Rights

Released under the CC-BY 4.0 ("Attribution") License

Citation
Gijswijt, M.J. (1999). Four new species of Pteromalus Swederus (Hymenoptera: Chalcidoidea: Pteromalidae) and redescriptions of three other species. Zoologische Mededelingen, 73, 1-11, 165–175.