Notes on the larval morphology of Pteromalidae (Hymenoptera: Chalcidoidea) species parasitoids of gall wasps (Hymenoptera: Cynipidae) in Europe Author Gómez, Jose F. Author Nieves-Aldrey, Jose Luis text Zootaxa 2012 3189 39 55 journal article 45457 10.5281/zenodo.280035 bdadcf68-8647-455c-997a-efde1b035538 1175-5326 280035 Rivasia fumariae Askew & Nieves-Aldrey, 2005 Measurements. Body length: 1.5–1.8 (1.7) mm, maximum width: 0.7–0.9 (0.8) mm (n=4) ex gall Neaylax versicolor (Nieves-Aldrey) . Description. Single row of very short setae visible on thoracic segments ( Figs 4 G, 6G); body strongly curved ventrally ( Fig. 5 G). Head (anterior view) ( Fig. 6 G). Trapezoid with the vertex strongly incised medially; antennal area bulging and conspicuous. Mouth parts ( Fig. 7 G). Ventral margin of clypeus straight; labrum subrectangular, 4.5× wider than long. Mandibles ( Fig. 8 E). Tooth relatively short and wide and slightly recurved from its base; angle separating inner side of tooth and base of mandible nearly 90º with outer margin relatively convex. Biology. Askew & Nieves-Aldrey (2005) provided a detailed description of the terminal larva of R. fumariae . The species has been recently described and a new genus was created to include it. The species is strictly associated with galls on fruits of Fumaria spp . ( Papaveraceae ) induced by N. versicolor ( Fig. 9 G). It is a monophagous primary ectoparasitoid and has so far been recorded in only a few localities in Spain ( Askew & Nieves-Aldrey 2005 ; Askew et al . 2006; Gómez et al . 2006). Material examined. ex gall N. versicolor on Fumaria sp., Spain , Almería: San José (n=2); Madrid: Rivas- Vaciamadrid (n=1); Tarragona: Marçá (n=1).