Among the commoner of the galls of the Cynipidae are the " oak-apple " or " oak-sponge " of Andricus terminalis, Fab.; the " currant " or " berry galls " of Spathegaster baccarum, L., above mentioned; and the " oak-spangles " of Neuroterus lenticularis, 9 Oliv., generally reputed to be fungoid growths, until the discovery of their true nature by Frederick Smith, 10 and the succulent " cherry-galls " of Dryophanta scutellaris, Oliv.
The oak-apple often contains the larvae of Braconidae and Ichneumonidae, which Von Schlechtendal (loc. sup. cit.
galla, oak-apple, from which comes the English "gall," meaning an excrescence on trees caused by certain insects.
the formation of a pathological growth or gall, always of a definite form and characteristic of the species; the " oak-apple " and the bedeguar of the rose are familiar examples.
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