著者

AOKI Shigeyuki

出版者

日本昆虫学会

雑誌

昆蟲 (ISSN:09155805)

巻号頁・発行日

vol.45, no.2, pp.276-282, 1977-06-25

被引用文献数

1

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Colophina clematis is a woolly aphid with a peculiar kind of dimorphism in the 1st instar larval stage : "primary-type" larva and the unusually characterized "secondary-type" larva. Some hypotheses explaining the biological role of secondary-type 1st instar larva were proposed and tested, and the following one is accepted as the conclusion of this paper : Secondary-type 1st instar larvae attack intruders, thus they serve for defending their colony from some predators ; and they neither grow nor reproduce. Further problems are briefly pointed out.