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- W2022851541 abstract "1. Further survey of the japanese brown tail moth (Euproctis pseudoconspersa STRAND) was made concerning the larval moulting of the first generation. From the results of this survey together with the first report, it was found that the larvae had five-seven moultings but some of them might have eight moultings as they did in the second generation.2. The total life-cycle from larva to adult took 53-61 days at 25°C., and 75% R.H. This period was one month or 12-20 days shorter than that of the first or second generation in the natural environment.3. The number of eggs containing in the abdomen of 60 female moths was counted, one female had 373.5 eggs on an average and 454 in maximum which was much larger than that of laid eggs.The number of the residual eggs in the abdomen of 10 females after laying eggs was 81.3 on an average, 292 in maximum, and 58 in minimum.4. The number of eggs containing in eggmasses collected in the field was as follows:5. In Japan (Kanaya), they repeated two generations a year, the larvae had five-eight moultings, and the male moths had two seasonal color forms, one was black and the other yellow as female. The former appeared in the first generation, and the latter in the second.In Formosa (Taipei), they had five generations a year, the larvae had usually five moultings, the black moths appeared in summer' the yellow in winter, and the intermediate in April.6. Two species of Hymenopterous egg parasites were found in Japan, one was Telenomvs sp. (Scelionidae) and the other Trichogramma dendrolimi MATSUMURA. The percent parasitization by the former species was 38.4% in the first generation, and 8.7% in the second in 1953, while that of the latter was 0.3% in the first and 0.5% in the second respectively.The former species was one of the most important natural enemy on Evproctis pseudoconspersa whose host was recorded as only one. The latter was not so effective enemy on Evproctis pseudoconspersa, however, seventeen other hosts were found and was a very effective parasite on the tea tortrix (Adoxophyes privatana WALKER, Homona coffearia NIETNER) and Phrixolepia serieea BUTLER (Coehlidionidae)." @default.
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- W2022851541 date "1954-10-10" @default.
- W2022851541 modified "2023-10-14" @default.
- W2022851541 title "Biological Notes on the Japanese Brown Tail Moth (Euproctis pseudoconspersa STRAND) (Part 2)" @default.
- W2022851541 cites W4244425828 @default.
- W2022851541 doi "https://doi.org/10.5979/cha.1954.4_24" @default.
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