柠条重要害虫四线奇尺蛾天津亚种的形态特征与生物学特性
Morphological traits and bionomics of Chiasmia saburraria richardsi on Caragana korshinskii
赵宇晨；宋鲜梅；常春燕；王新谱
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DOI：10.7679/j.issn.2095-1353.2019.117
作者单位：宁夏大学农学院，银川 750021；宁夏大学农学院，银川 750021；宁夏大学农学院，银川 750021；宁夏大学农学院，银川 750021
中文关键词：四线奇尺蛾；形态特征；生活习性；生活史；天敌
英文关键词：Chiasmia saburraria richardsi; morphology; biological habits; life history; natural enemies
中文摘要：【目的】 明确柠条重要食叶害虫四线奇尺蛾天津亚种Chiasmia saburraria richardsi的生物学特性，为进一步做好害虫防控提供科学依据。【方法】 结合野外调查和室内饲养的方法，观察记录了四线奇尺蛾天津亚种的生长发育过程及行为特性。【结果】 四线奇尺蛾天津亚种在宁夏地区1年发生2代，世代重叠明显。在8月底开始以蛹在10 cm浅层土内越冬，越冬代成虫次年5月中旬始见，5月下旬第1代卵开始孵化，7月初第一代老熟幼虫开始化蛹，蛹期是10 d，7月中旬第2代成虫开始羽化，7月下旬第2代幼虫出现，8月下旬第2代老熟幼虫开始化蛹，越冬蛹期为260 d左右。常见捕食性天敌有蠋蝽、日本弓背蚁和沙泥蜂，寄生性天敌有白僵菌。【结论】 四线奇尺蛾天津亚种C. s. richardsi是一种危害柠条的食叶害虫。
英文摘要：[Objectives] To clarify the morphology, life history, behavior and natural enemies of Chiasmia saburraria richardsi. [Methods] The biological characteristics of C. s. richardsi were studied comprehensively in field surveys and under laboratory conditions. [Results] C. s. richardsi has two generations per year which overlap considerably. Mature larvae pupate during the end of August in 10 cm soil around the base of plant stems in fields in Ningxia. Overwintering adults emerge from mid-May and eggs of the first generation hatch in late May. Mature larvae pupate in early July and the average duration of the pupal stage is 10 d. Adults of the second generation emerge from mid-July and larvae are present in late July. Mature larvae pupate in late August and overwinter as pupae for about 260 d. Arma custos, Camponotus japonicus and Ammophila sp. are predators of C. s. richardsi, and Beauveria sp. is an entomopathogenic fungus that infects this pest. [Conculsion] The larvae of C. s. richardsi feed on the leaves of host plants and are an important pest of Caragan korshinskii.