蜂巢奇露尾甲幼虫龄期的划分

为了明确蜂巢奇露尾甲Aethina tumida Murray幼虫的龄期和最佳分龄指标，本研究分别对不同发育阶段幼虫的头壳宽进行测量，根据各指标的频次分布结果初步确定龄期，并运用Crosby生长法则和线性回归方法进行验证分析。结果表明：蜂巢奇露尾甲幼虫可分为4龄，1~4龄头壳宽度平均值分别为0.1842 mm、0.2942 mm、0.4613 mm、0.7280 mm；此外，本文还对蜂巢奇露尾甲幼虫的形态特征进行描述。本文为研究蜂巢奇露尾甲的发生规律、生物学特性及制定防治措施等提供参考。

Determination of larval instars of Aethina tumida Murray (Coleoptera: Nitidulidae)

In order to clarify the instar stage and the best index of the Aethina tumida larvae, this study measured the head shell width of larvae at different developmental stages. Thus, the age was initially determined according to the frequency distribution results of each index, and the Crosby growth law and linear regression method were used for verification and analysis. The results showed that the larvae of A. tumida could be divided into 4 instars, and the average head shell widths of the first to fourth instar were 0.1842 mm, 0.2942 mm, 0.4613 mm, and 0.7280 mm. In addition, the morphological characteristics of the larvae were described. This article provided theoretical basis for studying the occurrence law, biological characteristics of the larvae and the development of control measures.