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【目的】对二疣犀甲Oryctes rhinoceros室内生物学特性及形态进行系统观察。【方法】在室内一定条件下(温度26±1℃,RH75%～95%,光周期10L∶14D)以牛粪和锯末混合物(4∶1,m/m)饲养二疣犀甲各虫态,每6h观察记录各虫态的形态学特征及其发育情况,并测量各虫态的重要发育指标,如体长、体宽、体重等。【结果】二疣犀甲属于全变态昆虫,一生经历4个虫态,分别为卵、幼虫、蛹和成虫。二疣犀甲卵的发育历期平均为8.88d,整个幼虫期平均需156.82d,预蛹和蛹的平均发育历期分别为9.45d和33.75d,二疣犀甲完成一个世代需要326～455d。1龄幼虫体长为4.16mm,体重0.64g,之后随龄期迅速增加,至3龄时,体长为65.66mm,体重增加到12.14g。蛹期平均体长为51.62mm,体重为9.72g。早期羽化的成虫个体较晚期羽化的大,表现为体长、体宽、角长及体重存在显著差异(P≤0.05)。二疣犀甲成虫具有雌雄二型现象,子代性比(雌∶雄)为1.23∶1。【结论】二疣犀甲O.rhinoceros是椰子等棕榈科植物的重要害虫,基础生物学和形态学研究是防控技术研究的基础,本研究结果可为生产上防治该虫提供理论依据。
【Objective】 The biological characteristics and morphology of Oryctes rhinoceros were observed systematically. 【Method】 All the insect states of two vermina were reared under the conditions of indoor temperature (26 ± 1 ℃, RH75% -95%, photoperiod 10L: 14D) with a mixture of cow dung and sawdust (4:1, m / m) The morphological characteristics and development of each insect were observed and recorded every 6h, and the important developmental indexes such as body length, body width and body weight were measured. 【Result】 Two warts and rhinoceros are all-paralyzed insects. They experience four stages of insect life, namely eggs, larvae, pupae and adults respectively. The average developmental period of the two verrucous rhinoceros eggs is 8.88 days, and the average larval period is 156.82 days. The average developmental stages of pre-pupa and pupae are 9.45 days and 33.75 days, respectively. . The first instar larvae had a body length of 4.16 mm and a body weight of 0.64 g, and then rapidly increased with age. By the age of 3, the body length was 65.66 mm and the body weight increased to 12.14 g. The pupal average body length of 51.62mm, weighing 9.72g. Early eclosion adult individuals were more uplifted later, with significant differences in body length, body width, angular length and body weight (P <0.05). Two warts rhinoceros adults with male and female type II phenomenon, the progeny than female (male) was 1.23: 1. 【Conclusion】 O. rhinoceros is an important pest of palm plants such as coconut. The basic biology and morphology research are the basis of prevention and control technology. The results of this study can provide theoretical basis for the prevention and control of this insect in production.