果蝇 Fruit Flies

阶段 Stage	中文	English
卵 Eggs	卵小而椭圆形，乳白色，常产于成熟或腐烂水果表面。	Eggs are small, oval, whitish, usually laid on the surface of ripe or decaying fruits.
幼虫 Larvae (Maggots)	无足，乳白色蛆状，群集取食果肉，使果实腐烂。	Legless, whitish maggots that feed in groups within fruit pulp, causing rotting.
蛹 Pupae	蛹呈椭圆形，淡褐色，多在果实表面或土壤中化蛹。	Pupae are oval, light brown, usually found on fruit surfaces or in soil.
成虫 Adults	体长约2–4 mm，常见为黄褐或褐色，复眼鲜红，善飞，繁殖快。	Adults 2–4 mm long, usually yellow-brown or brown, with bright red compound eyes; strong fliers, reproduce rapidly.

中文	English
果蝇繁殖力强，在适宜条件下10–12天即可完成一代。雌成虫一生可产卵数百枚。温暖潮湿环境下种群快速膨胀。	Fruit flies reproduce rapidly, completing one generation in 10–12 days under suitable conditions. A female may lay several hundred eggs in her lifetime. Populations expand quickly in warm and humid environments.

中文	English
果蝇数量随气温和果实成熟度变化。夏季和秋季果实丰富时，果蝇暴发最严重。低温或果源减少时，数量下降。	Fruit fly populations fluctuate with temperature and fruit availability. Outbreaks are most severe in summer and autumn when fruits are abundant. Numbers decline in colder seasons or when fruit is scarce.

中文	English
果蝇多在成熟、过熟或腐烂水果上产卵，幼虫取食果肉，造成果实软烂，降低商品价值。成虫活跃于果园和储藏间，易随水果传播。	Fruit flies lay eggs on ripe, overripe, or decaying fruits. Larvae feed on pulp, causing softening and decay, reducing market value. Adults are active in orchards and storage areas and can spread easily with fruits.