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

Docters van Leeuwen (1956) reported a new sexual form of the A. kollari group, but he did not know if it was the sexual generation of A. corruptrix or A. lignicolus, and hence he did not give any names. The sexual form of A. lignicolus was reported later by Docters van Leeuwen & Dekhuijzen-Maasland (1958) and was named as "A. lignicolus f. vanheurni"

. However, giving a new name to the described new form or in this case unknown sexual generation, made after 1930, is not valid (ICZN, art. 1.3.6) and, thus the name "vanheurni" is not available. Later, Wiebes-Rijks (1978) revised all the known sexual forms of the kollari-group, including the sexual form of A. lignicolus, and gave diagnostic characters for this form, and continued to use the name "A. lignicolus f. vanheurni", given by Docters van Leeuwen & Dekhuijzen-Maasland (1958). However, this name is not available, and therefore, the sexual form of Andricus lignicolus must be named only as "Andricus lignicolus, sexual generation" and not as "A. lignicolus f. vanheurni". Distribution - Widespread throughout Europe, like A. kollari and A. corruptrix. Recorded from Austria, Bulgaria, Czech Republic, France, Germany, Italy (with Sicily), Great Britain, Hungary, Ireland, Moldova, Poland, Slovakia, Ukraine, Yugoslavia and Asia Minor (Turkey, Antalya, rare, G. Stone pers. comm.). This species is an invading species in northern Europe, it is present wherever Q. cerris has been planted, and is now naturalised in Ireland and in Britain as far north as northern England. Biology - Alternating sexual and asexual generations. The sexual gall is small, inconspicuous, thin-walled, much of the gall surface is concealed by the bud scales; developing in apical and lateral buds of shoots of Quercus cerris only. The sexual generation galls develop through the early spring and mature in May, and the adults emerge immediately. Asexual galls also occur in buds, on oaks of the subgenus Quercus (Q. frainetto, Q. petraea, Q. pubescens, Q. robur). Vassileva-Samnalieva (1985) also recorded this gall from Q. dalechampii, Q. hartwissiana and Q. cerris. We regard the record from Q. cerris as a dubious one and it must be confirmed. lonescu (1973) recorded the asexual galls from exotic Q. monticola in Romania. The asexual generation galls begin their development in late May and early June, and mature from late autumn onwards. The adults of the asexual generation emerge in May of the following year. Andricus sternlichti Bellido, Pujade-Villar et Melika, sp. n. (Figs 7, 15, 17, 69-75) ? Diplolepis gallaetinctoriae Olivier, 1791: 280. Female, gall. Andricus tinctoria Olivier (part.): Houard 1911: 236. Misidentification. Cynips tinctoria Olivier: Chodjai 1980: 13. Gall. Misidentification. Andricus tinctoria var. nostria (Kieffer): Chodjai 1980: 13 . Gall. Misidentification. Andricus carmelis Sternlicht, in litt. Etymology - In honour of Dr M. Sternlicht, who collected and planned to describe this species.