. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 57 "Ttpe Radioicola ok Root-inhabitino.— We have seen that, in all probability, gallcecola exists only in the apterous, shagreened, non-tubercled, fecund female from. liudki- cnla, however, presents itself in two principal forms. The newly-hatched larvae of this type are undistinj^uishable, in all essential characters, from those hatched in the galls, but in due time they shed the smooth larval skin, and acquire raised warts or tubercles ; which at once distinguish them frum f/altce- cola. In
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 57 "Ttpe Radioicola ok Root-inhabitino.— We have seen that, in all probability, gallcecola exists only in the apterous, shagreened, non-tubercled, fecund female from. liudki- cnla, however, presents itself in two principal forms. The newly-hatched larvae of this type are undistinj^uishable, in all essential characters, from those hatched in the galls, but in due time they shed the smooth larval skin, and acquire raised warts or tubercles ; which at once distinguish them frum f/altce- cola. In the development from this point the two forms are separable with sufficient ease: one (A) of a more dingy greenish yellow, with more swollen fore-body, and more tapering abdomen ; the other (B) of a brighter yellow, with the lateral outline more perfectly oval, and with the abdomen more truncated at ; * " The first or mother form (Pig. 44,/, g,) is the analogue of gaUcecola, as it never ac- quires wings, and is occupied, from ado-. Ttpb Radicicola showiu" relation of BWclliiigs to leiit-galls, and power of resisting decomposition; lesconcc till death, with the laying of CggS. 6, larva as it appears when hibernatinpr: c, d, antenna and letr of i, - i i ' i "' 'i, i l ""^ same; c,/, 3, forms of more mature lice; h, iJranuiations of skin; which are Icss numerous and somcwhat larger I, tubercle : j, transverse folds at borders of joints; Ar, simple eyes, than those found in the galls. I haVC COUUtcd in the spring as many as two hundred and sixty-five eggs in a cluster, and all evidently from One mother, who was yet very plump and still occupied in laying. As a rule, however, they are less numerous. With pregnancy this form becomes quite tumid and more or less pyri- form, and is content to remain with scarcely any motion in the more secluded parts of the roots, such as the creases, sutures and depressions, which the knots aflbrd. The skin is dis-
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
