. British oak galls. Galls (Botany). 72 BRITISH OAK GALLS. Concerning Inquilines from this gall, Cameron says : " Sj/uergus apicalis and Geroptres arator are supposed to be reared from the galls of testaceipes, but they really may have been from those of noduli, the petiole galls of which may have been mistaken for those of testaceipes'' ('Brit. Phyto. Hymen.,' vol. iv, p. 87). Considerable doubt seems to exist in the minds of some authors as to whether this species is, or is not, the same as Andricus noduli. The habits of both species are much alike; the galls of each are the same in siz
. British oak galls. Galls (Botany). 72 BRITISH OAK GALLS. Concerning Inquilines from this gall, Cameron says : " Sj/uergus apicalis and Geroptres arator are supposed to be reared from the galls of testaceipes, but they really may have been from those of noduli, the petiole galls of which may have been mistaken for those of testaceipes'' ('Brit. Phyto. Hymen.,' vol. iv, p. 87). Considerable doubt seems to exist in the minds of some authors as to whether this species is, or is not, the same as Andricus noduli. The habits of both species are much alike; the galls of each are the same in size and shape and develop in stem and petiole alike, Andricus testaceipes alone, apparently, on the veins of the leaf. According to Adler the imagines cannot be distin-. FiG. 6.—Galls caused by Andricus testaceipes, on petiole and mid-rib of leaf of Q. sessilijiora. dele, ad nat. guished Avith certainty from each other, their time of emergence is identical, and they oviposit in the same manner. Mayr conjectured as to whether petiolar galls containing a larva of Andricus iwduli were originally produced by A. testaceipes, and A. nodnli has only introduced its eggs, or whether the galls are primarily produced by A. noduli alone. Although he gathered hundreds of these galls in the months of August and September he could not solve the problem. Adler's experiments show that the imagines from the galls in leaf-veins and petioles, known as those of Andricus testaceipes, lay their eggs in shoots above ground and produce ApUilothrix Sieholdi galls, which, although gregarious, are unilocular ; and the imagines. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Connold, Edward T. , 1862-1910. London : Adlard and son
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