【目的】 锯叶裂臀瓢虫Henosepilachna pusillanima (Mulsant)是葫芦科植物上的一种植食性瓢虫，为瓜类蔬菜的主要害虫之一。本研究旨在探明不同瓜类植物对该虫发育和繁殖的影响。【方法】 在（26±1）℃、相对湿度60%±5%、光周期L∶D= 14∶10条件下，用棱角丝瓜 Luffa acutangula (L.) Roxb.、南瓜Cucurbita moschata Duchesne、黄瓜Cucumis sativus L.、节瓜Benincasa hispida (Thunb.) Cogn. var. chieh-qua How和红瓜Coccinia grandis (L.) Voigt 5种植物的叶片饲养锯叶裂臀瓢虫，观察各虫态的生长发育进程和成虫的繁殖活动。【结果】不同寄主植物对锯叶裂臀瓢虫卵和各龄幼虫的发育、非成虫期以及产卵前期、产卵期、雌虫寿命和繁殖力均有显著影响，但预蛹期和蛹期不受寄主植物的影响。棱角丝瓜、南瓜、黄瓜、节瓜和红瓜上锯叶裂臀瓢虫非成虫期的平均历期分别为27.43、28.03、28.88、29.33、28.01 d。来自棱角丝瓜和红瓜的雌虫拥有较短的产卵前期、较长的产卵期和寿命。棱角丝瓜和红瓜上雌虫繁殖力也较强，其平均值分别高达2 039.79粒/♀和1 637.11粒/♀。5种瓜类植物上雌虫的逐日累计产卵率均完全符合三参数Weibull模型。【结论】 锯叶裂臀瓢虫的5种寄主植物中，棱角丝瓜和红瓜拥有更高的适合度。

[Objectives]  Henosepilachna pusillanima (Mulsant) (Coleoptera: Coccinellidae) is a phytophagous insect that feeds on cucurbitaceous plants and is considered an economic pest. This study aims to evaluate the effects of five cucurbitaceous host-plants on the development and reproduction of this ladybird beetle. [Methods]  Under laboratory conditions of (26±1)℃, 60%±5% R.H. and a photoperiod of 14L︰10D, H. pusillanima were reared on either the young, fully expanded leaves of ridged gourd (Luffa acutangula), squash (Cucurbita moschata), cucumber (Cucumis sativus), wax gourd (Benincasa hispida var. chieh-qua), or ivy gourd (Coccinia grandis. The development of each life stage on each plant was observed. Freshly emerged adults were paired, and the number of eggs laid daily by adult females during their life-span determined. [Results]  The results show that, with the exception of the prepupal and pupal stages, different cucurbit host-plants significantly affect the developmental duration of each immature stage, as well as the immature period, pre-oviposition period, ovipostion period, and lifetime female longevity. The immature period of H. pusillanima on ridged gourd, squash, cucumber, wax gourd, and ivy gourd lasted on average for 27.43, 28.03, 28.88, 29.33, and 28.01 days, respectively. Females reared on ridged gourd and ivy gourd had a shorter pre-ovipotion period, a longer ovipotion period, and a longer life-span, compared with those reared on squash, cucumber, and wax gourd. The mean lifetime fecundity of the females on ridged gourd and ivy gourd was 2 039.79 and 1 637.11 eggs, respectively, which were significantly higher than those of females reared on the other three cucurbits. The age-specific cumulative oviposition rate of females on all tested cucurbit host was best described by the three-parameter Weibull function. [Conclusion]  Ridged gourd and ivy gourd were the most suitable host plants among the five cucurbits tested for the development and reproduction of H. pusillanima.