角蠟介殼蟲之發生消長及其防治

Seasonal Abundance of the Ceriferus Wax Scale (Ceroplastes pseudoceriferus) in Southern Taiwan and Its Control

溫宏治(Hung-Chich Wen) ； 李錫山(Hsi-Shan Lee)

《中華農業研究》 35卷2期 (1986/06) Pp. 216-221

https://doi.org/10.29951/JARC.198606.0010

摘要

角蠟介殼蟲(Ceroplastes pseudoceriferus Green)於本省南部一年發生3代，其發生棲羣密度以夏世代（第2世代）（6~9月）最高，秋冬世代（第3世代）（9月至翌年3月）次之，春世代（第1世代）（2~7月）最低。春世代一母蟲平均產卵量爲1287.7粒，秋冬世代爲1103.5粒，夏世代爲1445.2粒，初齡若蟲發生時間，分別爲3月下旬至4月下旬，6月下旬至7月下旬及9月下旬至11月上旬。天敵以檀島蚧小蜂(Coccophasus hawiaiensis Timberlake)最多，有角蠟介蟲發生之果園均有分佈，寄生率4.43~33.95%，平均17.41%。以Gusathion 25% EC, Dimethoate 44% EC及Folimate 50% EC等藥劑做防治試驗結果，對初齡若蟲之防治率均達98%以上，而對角蠟介殼蟲（3齡若蟲～成蟲）之防治率均不及50%。故用藥劑防治本蟲之時機，以初齡若蟲期最爲適宜。

並列摘要

The ceriferus wax scale, Ceroplastes pseudoceriferus Green, is one of the most important pests of lichi and mango in southern Taiwan. Their nymphs and adults sucked sap from twig and leaf and exuded whitish sticky honeydews on the surface of them, where sooty moulds developed in wet weather.
There were 3 generations occurred in southern Taiwan annually. The population of the summer generation (Jun. to Sep.) was most abundant, followed by the autumn- winter generation (Sep. to Mar.) and less of spring generation (Feb. to Jul.).
The number of eggs laid by a single female of summer, autumn-winter and spring generation were 1,445.2, 1,103.5 and 1,287.7 in average, respectively. Crawlers occurred mainly in later Jun. to later Jul., later Sep. to early Nov. and later Mar. to later Apr.
A parasitic wasp (Coccophagus hawaiiensis Timberlake) was found in every sampling orchard of the ceriferus wax scale and parasitized from 4.43 to 33.95%, 17.41% in average.
Gusathion 25% WP, Dimethoate 44% EC and Folimate 50% EC were tested for controlling the ceriferus wax scale. The percent control of these insecticides controlled crawler were 98.8, 99.4, 98.85 and in the stage of 3 instar nymph+ adult wax scale were 28.36, 44.48, 31.73, respectively. Therefore insecticides should be applied when the crawler occurred prosperously.