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紫胶,主要由紫胶虫的雌虫分泌的。雄虫仅在幼虫期(1—2龄)分泌少量的胶,几乎无利用价值。所以紫胶虫雌雄比例之高低与紫胶产量有着直接的关系。
Lac, secreted mainly by the lac insect. Male larvae secrete only a small amount of glue during the larval stage (age 1-2), with little use value. Therefore, the ratio of male and female larvae and shellac yield has a direct relationship.