Cecidostiba is a genus of parasitoid wasps in the tribe Pteromalini. All species in the genus are parasitoids of gall wasps (Cynipidae) on Quercus, Castanea and Acer.
As of 2025, there are 9 described species in the genus.
Description Species in the genus are parasitoids of gall wasps (Cynipidae) on Quercus, Castanea and Acer, along with other similar genera in the same tribe.
This genus can be distinguished from other similar genera such as Hobbya and Caenacis based on the presence of piliferous punctures on the mesoscutum.
Species This genus contains the following species: Cecidostiba atra Askew, 1975 Cecidostiba docimus (Walker, 1839) Cecidostiba fungosus (Geoffroy, 1785) Cecidostiba fushica Kamijo, 1981 Cecidostiba geganius (Walker, 1848) Cecidostiba ilicina Nieves-Aldrey & Askew, 1988 Cecidostiba jucundus (Förster, 1841) Cecidostiba saportai Graham, 1984 Cecidostiba semifascia (Walker, 1835)
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