Petitpierre Eduard
Dept. Biologia, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain Universitat de les Illes Balears Palma de Mallorca Spain.
Comp Cytogenet. 2019 Sep 3;13(3):277-281. doi: 10.3897/CompCytogen.v13i3.36581. eCollection 2019.
Two species of Cassidinae have been chromosomally analyzed, Kraatz, 1874 from France, with 2n = 18, 8 + Xy meioformula and (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 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.
已经对两种卡西迪叶甲亚科昆虫进行了染色体分析，一种是来自法国的克拉茨叶甲（Kraatz，1874），其二倍体数目为2n = 18，减数分裂公式为8 + Xy；另一种是来自乌拉圭的（克鲁格叶甲，Klug，1829），其二倍体数目为2n = 30，减数分裂公式为14 + Xy。前者的核型由相似的中着丝粒/亚中着丝粒常染色体、一条小的X染色体和一条极小的y染色体组成，这与许多其他卡西迪叶甲族物种一样，而后者至少有四对近端着丝粒/端着丝粒常染色体，其余的是中着丝粒/亚中着丝粒染色体，包括X染色体和一条极小的y染色体，这表明它可能通过着丝粒裂变起源于近裔性状，就像在中卡西迪叶甲族的其他一些物种中发现的那样。
