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花卉植物虫害:露尾甲

Miss Chen
2017-09-13
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分布与危害

#露尾甲 学名Haptonchusluteolus,别名出尾虫。属于鞘翅目,出尾虫科。在我国分布在浙江、江苏、安徽、上海、湖北、云南、四川等地区。主要为害百合、山茶、茉莉、月季、金橘、栀子花、广玉兰、白玉兰、萱草、锦葵、扶桑、芙蓉等花木。

主要是以成虫、幼虫栖息在树皮缝隙间,取食花粉、花蕊、子房、花瓣。影响花卉的开花,降低花卉的观赏价值。

形态特征

成虫体长约6毫米,黄褐色,布满小刻点;复眼黑色。触角球杆状。前胸平宽。鞘翅近长方形,端边平截。

幼虫体长约3毫米,灰黄色,各节背中央灰暗色,腹末背面具有小突起。

蛹黄褐色,复眼黑色,腹末响2根尾刺。

发生规律

该虫年以8-9月间发生数量较多。每朵花中可见十几头成虫,取食花蕊、花瓣、子房危害。成虫多在中午飞翔,具有假死性;产卵于花朵中,幼虫也在花朵中取食。幼虫老熟时,在落叶中化蛹。行动缓慢,除晴天中午偶有飞翔外,一般不活动。受害植株提前凋萎。

防治方法

(1)人工防治根据该虫有假死性,可在清晨或阴天捕捉成虫;被害严重的,摘除集中烧毁。

(2)保护和利用其天敌。

(3)化学防治:幼虫发生期,用45%丙溴辛硫磷(国光依它)1000倍液,40%啶虫.毒(必治)1500-2000倍液,国光乙刻(20%氰戊菊酯)1500倍液+乐克(5.7%甲维盐)2000倍混合液叶面喷雾防治,连用2-3次。
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