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瓢虫雄性外生殖器在种内比较稳定,而种间常有明显的差别,因而被作为近似种鉴别的依据。几年来在教学实验中,笔者对瓢虫雄性外生殖器的制片技术作过多次实践,积累了一些经验,现介绍如下。一、瓢虫外生殖器构造雄性外生殖器构造,主要分为弯管(即阳茎)及阳基(即阳茎基)两部分。弯管成弧形弯曲管状,其基部常扩大为弯管囊。弯管囊突出于弧外的称外突,突出于孤内的称为内突,弯管的末端部分称为弯管端,端部插入基片和中叶之内,中叶的腹面为弯管的开口。阳基可分为基片、中叶及二对侧叶。在
Ladybug male genitalia in the relatively stable species, and often obvious differences between species, which is used as the basis for identification of similar species. Over the past few years in teaching experiments, the author of Ladybug male external genital preparation technology for many times practice, has accumulated some experience, are presented below. First, the outer ladybug genital structure Male genitalia structure, mainly divided into elbow (ie, Yang) and Yang-based (that is, the base of the sun) in two parts. Elbow curved into a curved tube, the base often expanded to bend the capsule. Elbow protruding out of the arc known as the outer protrusion, protruding from the solitary known as the internal process, the elbow is called the end part of the elbow end, the end inserted into the middle of the substrate and the middle of the ventral surface of the elbow Open. Yang base can be divided into substrate, middle and two pairs of lateral leaves. in