S. Mahunka szerk.: Folia Entomologica Hungarica 64. (Budapest, 2003)

Distribution - The species was recorded from the greatest part of Europe, Asia Minor and North Africa (Dalla Torre & Kieffer 1910); nevertheless some of these records must be confirmed. Originally described from Germany (A. corruptrix) and Italy (A. ambiguus), probably radiated from Eastern Europe [Bulgaria (Vassileva-Samnalieva 1985), Hungary (common everywhere), Moldova (Plugaru 1963), Poland (Kierych 1979), Romania (lonescu 1973), Ukraine (Csóka & Melika 1973, Transcarpathia only)], but now is widespread in Europe following the host plant of the sexual generation, Quercus cerris (Docters van Leeuwen 1956, Docters van Leeuwen & Dekhuijzen-Maasland 1958, Hails & Crawley 1991, Schönrogge et al. 1998, Stone & Sunnucks 1993, Stone et al. 1995, Stone et al. 2002). Recorded also from Transcaucasus (Azerbaijan) (Maisuradze 1962). Biology - Alternate asexual and sexual generations have been recently established (Folliot, Ros-Farré, Bellido & Pujade-Villar 2003). The gall of the asexual generation develops in buds on Q. robur, Q. petraea, Q. pubescens, and Q. mirbeckii. Also on Quercus macranthera (Maisuradze 1962); most common on Q. robur. Galls develop in late summer, mature in late September to October, adult wasps overwinter and emerge next year, in May to June. The sexual generation induces bud galls on Q. cerris only. Andricus galeatus (Giraud, 1859) Figs 4, 45-50 Cynips galeata Giraud, 1859: 372. Gall. Mayr 1870: 22. Female, gall. Adleria galeata (Giraud): Rohwer & Fagan 1917: 359. Andricus galeata (Giraud): Benson 1953: 220. Redescription and detailed taxonomic comments on this species are given in Pujade-Villar, Bellido, Thuróczy & Folliot (2001). Diagnosis - Belongs to the group of species with subparallel propodeal carina, A. corruptrix, A. aries and A. amblycerus. In A. galeatus and A. amblycerus the anterior part of mesopleuron is wrinkled (Figs 9, 22, 47), while in A. aries and A. corruptrix coriaceous (Figs 10, 29, 41). Most closely resembles A. amblycerus, but differs in the colour of the mesosoma and sculpture of the propleuron, with distinct longitudinal striae in A. amblycerus (Fig. 23) and without in A. galeatus. The scutellar area is conspicuosly carinated in A. galeatus. Differs also from all the species in the group by the scutellum, which is very dull rugose, posteriorly strongly carinated and less rounded, quadrangular. Andricus galeatus differs from A. corruptrix, as the carina between scutellar foveae is narrow; the axillula is black, the antenna 12-13-segmented (Fig. 46), while in A. corruptrix the scutellum is more delicately rugose, posteriorly much less carinated, rounded; the carina between scutellar foveae is broad (Fig. 1 1 ); the axillula is light brown; the antenna is 13-14-segmented (Fig. 40). See also Diagnosis of A. amblycerus, A. aries and A. corruptrix and the key to species.