Two species of Cassidinae have been chromosomally analyzed, Cassida humeralis Kraatz, 1874 from France, with 2n = 18, 8 + Xyp meioformula and Anacassis fuscata (Klug, 1829) from Uruguay, with 2n = 30, 14 + Xy meioformula. The karyotype of the former is composed of similar meta/submetacentric autosomes, a small X-chromosome and a tiny y-chromosome, as many other Cassida and tribe Cassidini species, whereas that of the latter has four pairs of acro/telocentric autosomes at least and the remaining meta/submetacentrics including the X-chromosome and a tiny y-chromosome, which points out to its probable apomorphic origin by centric fissions, as found in some other species of the tribe Mesomphaliini.

中文翻译：

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两种蝇属（鞘翅目，金眼科）的细胞遗传学分析。

已对两种卡西迪亚植物进行了染色体分析，法国的Cassida humeralis Kraatz，1874，2n = 18，8 + Xyp meioformula和乌拉圭的Anacassis fuscata（Klug，1829），来自乌拉圭，2n = 30，14 + Xy meioformula。前者的核型由相似的亚/亚亚中心体，小的X染色体和微小的y染色体组成，与其他Cassida和部落Cassidini物种一样，而后者的核型至少具有四对acro / telocentric常染色体。其余的meta / submetacentrics包括X染色体和微小的y染色体，这表明它可能是由中心裂变引起的无定形起源，正如在其他一些部落的Mesomphaliini中所发现的那样。