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 Pteromalus hieracii ( Thomson, 1878 ) Measurements. Body length: 1.3–2.3 (1.8) mm, maximum width: 0.5–0.8 (0.6) mm (n=2) ex gall Aulacidea follioti Barbotin. Description. Whitish or yellowish; smaller with body 2.5× as long as broad ( Fig. 4 E). Head (anterior view) ( Fig. 6 E). Regularly rounded, slightly broader than long; vertex clearly incised medially. Mouth parts ( Fig. 7 E). Ventral margin of clypeus straight; labium large and more or less rectangular, 3× wider than long. Biology. The species P. hieracii is a parasitoid of several cynipid galls in Asteraceae plants such as Hieracium spp . ( Fig. 9 B). In the Palaearctic region apart from A. follioti it has been reared from galls of Aulacidea hieracii (Linnaeus) , Aulacidea tragopogonis (Thomson) , Isocolus jaceae (Schenck) , Isocolus scabiosae (Giraud) , Phanacis caulicola (Hedicke) , Phanacis centaureae (Förster) , Phanacis hypochoeridis (Kieffer) , Timaspis lampsanae (Perris) , Timaspis lusitanica Tavares ; and also from galls of Aylax papaveris (Perris) on Papaver spp . ( Papaveraceae ) (Askew et al . 2006). It is always a primary ectoparasitoid of the cynipid larvae. Material examined. ex gall A. follioti on Sonchus asper (Asteraceae) , France , Pyrénées Atlantiques: Vallée D’Aspe ( 07/08/2003 ) J. L. Nieves leg. (n=2).