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 Cecidostiba fungosa (Geoffroy in Fourcroy, 1785 ) Measurements. Body length: 1.8 mm , width: 0.62 mm (n=1) ex gall Andricus quercusradicis (Fabricius) (Sexual generation). Description ( Figs 4 B, 5B). Whitish; integument mostly smooth and glabrous on all body segments; small, 2.5× as long as broad and tapering gradually posteriorly ( Fig. 4 B) and strongly curved ventrally in lateral view ( Fig. 5 B); ventral margins of body segments straight. Head (anterior view) more or less trapezoid, 1.1–1.3× as broad as high; vertex slightly incised medially ( Fig. 6 B); cephalic chaetotaxy pattern as in A. glandium consisting of by very short and inconspicuous setae ( Fig. 6 B); ventral margin of clypeus straight; labrum large and trapezoid, more than 4× wider than long ( Fig. 7 B). Mouth parts ( Fig. 7 B). Maxillae indistinct; two pairs of inconspicuous maxillary setae; labium sub-rectangular, rugose and convex and not collapsed; labium setae invisible. Mandibles ( Fig. 8 B); tooth almost 1.8× longer than wide measured at its base; angle separating inner side of tooth and base of the mandible obtuse (>90º); outer margin of tooth almost straight, slightly curved near sharp apex. Biology. Adults of C. fungosa ( Fig. 9 E) are common, widespread parasitoids in oak gall wasp communities ( Askew 1961 ; Schönrogge et al . 1996; Bailey et al . 2009; Lohse et al . 2010 ). In Europe it has been reared mainly from galls of Biorhiza pallida (Olivier) and several species of Andricus Hartig and Cynips Linnaeus (Cynipidae) ( Nieves-Aldrey & Askew 1988 ). Material examined. ex gall A. quercusradicis (Sexual generation) on Quercus pyrenaica , Spain , Madrid: El Escorial ( 29/VI/2006 ) J. L. Nieves leg. (n=3).