Oak gall wasps (Cynipidae: Cynipini: Plagiotrochus) that induce galls on Quercus reproduce by alternate sexual and parthenogenetic generations (Pujade-Villar et al., 2001). However, a few species are obligatory parthenogenetic (Abe, 1998) or show the facultative alternation of generations (Folliot, 1964).

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Contributions to Zoology

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Naturalis journals & series

Pujade-Villar, J., Garbin, L., Paretas-Martínez, J., & Díaz, N. B. (2008). On the biological cycle of the gall wasp Plagiotrochus suberi Weld 1926 (Hymenoptera: Cynipoidea: Cynipidae) in the circum-Mediterranean region. Contributions to Zoology, 77(4).