Seasonal fluctuations of each stage, ovipositing and hatching behavior of Cerostegia japonicus Green (Homoptera: Coccidae) on persimmon trees. Park, J., Koo, H., & Lee, W. Research Reports of the Rural Development Administration, Crop Protection, 34(1):48–53, 1992.
abstract   bibtex   
The seasonal fluctuations in the occurrence of each stage, oviposition and hatching behaviour of Cerostegia japonicus [Ceroplastes japonicus] were investigated on persimmons in 1991, in Chonnam Province, Korea Republic. Oviposition occurred from late May to mid-July with a peak in late May. Larval hatching (when chemical control is effective) occurred from early June to early August with peaks in late June to early July. Adult females appeared from mid-October and overwintered after mating. Ovarian development in overwintering female began in the following May. Body size increased slightly with ovarian development. Oviposition began after 4 days at a constant temperature of 25 ± 1°C; up to 85% of eggs were laid during these first 4 days. The total number of eggs deposited was 924 ± 364.8/female but oviposition ability was greatly affected by temperature and varied with individual. Incubation time decreased as temperature increased up to 30°C, as did the rate of hatching. The development threshold was 8.1°C and the effective accumulated temperature was 316.5 day-degrees C in the egg stage.
@article{park_seasonal_1992,
	title = {Seasonal fluctuations of each stage, ovipositing and hatching behavior of {Cerostegia} japonicus {Green} ({Homoptera}: {Coccidae}) on persimmon trees.},
	volume = {34},
	issn = {1013-9389},
	abstract = {The seasonal fluctuations in the occurrence of each stage, oviposition and hatching behaviour of Cerostegia japonicus [Ceroplastes japonicus] were investigated on persimmons in 1991, in Chonnam Province, Korea Republic. Oviposition occurred from late May to mid-July with a peak in late May. Larval hatching (when chemical control is effective) occurred from early June to early August with peaks in late June to early July. Adult females appeared from mid-October and overwintered after mating. Ovarian development in overwintering female began in the following May. Body size increased slightly with ovarian development. Oviposition began after 4 days at a constant temperature of 25 ± 1°C; up to 85\% of eggs were laid during these first 4 days. The total number of eggs deposited was 924 ± 364.8/female but oviposition ability was greatly affected by temperature and varied with individual. Incubation time decreased as temperature increased up to 30°C, as did the rate of hatching. The development threshold was 8.1°C and the effective accumulated temperature was 316.5 day-degrees C in the egg stage.},
	number = {1},
	journal = {Research Reports of the Rural Development Administration, Crop Protection},
	author = {Park, JD and Koo, HY and Lee, WG},
	year = {1992},
	pages = {48--53}
}

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