照葉樹林におけるハスオビエダシャクDescoreba simplex BUTLER(鱗翅目,シャクガ科)の大発生と寄主植物

概要

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Descoreba simplex BUTLER, a polyphagous geometrid moth, has been identified, mainly in Honshu, as feeding on 23 species of deciduous and 7 species of evergreen trees which belong to 17 plant families. On 24 June 1987, a large number of mature larvae of D. simplex were observed after infesting many species of broad-leaved evergreen trees in the Takakuma Experimental Forest of Kagoshima University. Immediately 148 trees consisting of 29 species in 20 families were surveyed at a stand of broad-leaved evergreen trees in the Experimental Forest in order to determine the percentages of trees and leaves infested and the number of larvae located on each tree. A total of 105 trees out of 148 were apparently infested by the larvae, and they were classified into 14 species belonging to 7 families. Eleven of them, including 1 deciduous and 10 broad-leaved evergreen species, were newly added to the previously known host plants of the moth. As a result, the number of host plant species amounted to 41, belonging to 19 families. The percentages of trees and leaves infested were markedly high for such evergreen trees as Pasania edulis, Illicium religiosum and some species of Lauraceae. Almost all the larvae collected from the field died in the laboratory due to an unidentified disease.
日本鱗翅学会の論文
1988-09-20