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

very difficult to cut it, and it has a vitreous aspect when cut. Gall size is variable as in A. kollari, although usually the smallest galls are the result of parasitism. Diagnosis - Andricus infectorius is morphologically closely related to A. kollarilA. hispanicus, A. caliciformis and A. sternlichti; differences between them are given in the species key above. The main characteristics of A. infectorius within the A. kollari species-group are as follows: wasps are among the largest ones in the group, scutellar fovea are not limited posteriorly by carinae, genae are strongly broadened behind compound eyes (Fig. 16), notauli are shallow and often incomplete anteriorly, do not reach the pronotum, propodeal carinae are strongly