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Diplolepis jafiom2a (Walker) gives rise to a spherical monothalamous gall on either side of the blade or petiole of the compound leaf, rarely on the younger fruit of Rosa polyapztha Sieb. et Zucc. In ...this species, the occurrence of the male is very rare. The ovary and the ovarian egg are typical of those of most of the Cynipidae. The ovaries are composed of about 55 ovarioles. The average number of eggs in the ovaries of one individual is 331. Total length of the egg is 0.798 mm. The life-cycle was estimated by the dissection of galls every ten days. Adult wasp emerges from the third week of April to the beginning of May. The larva hatches either 10 or 40 days after oviposition, thus dividing the egg stage into two types. The galls develop in the beginning of May, and drop on the ground in early autumn. The larvae hibernate inside the galls and begin to pupate late in February.続きを見る
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