Climate shapes the spatiotemporal variation in color morph diversity and composition across the distribution range of Chrysomela lapponica leaf beetle.

Color polymorphism offers rich opportunities for studying the eco-evolutionary mechanisms that drive the adaptations of local populations to heterogeneous and changing environments. We explored the color morph diversity and composition in a Chrysomela lapponica leaf beetle across its entire distribution range to test the hypothesis that environmental and climatic variables shape spatiotemporal variation in the phenotypic structure of a polymorphic species. We obtained information on 13 617 specimens of this beetle from museums, private collections, and websites.

Review of leaf beetles from the genus Entomoscelis (Coleoptera: Chrysomelidae) in Kazakhstan and Central Asia.

From the leaf beetle genus Entomoscelis only E. adonidis (Pallas) has been reliably recorded for Kazakhstan and major parts of Central Asia so far. Distribution of E.

A chromosomal analysis of twelve species of the subfamily Chrysomelinae (Coleoptera, Chrysomelidae).

Twelve species of chrysomelines, all but one from the Palaearctic region, have been cytogenetically analyzed, mostly through their male meiotic metaphases I. Ambrostoma superbum has 2n = 40 (Xy(p)), Chrysolina colasi, Oreina fairmairiana and the Neotropical Platyphora spectabilis have 2n = 24 (Xy(p)), Chrysolina gebleri 2n = 26 (XY(p)), Colaspidema barbarum 2n = 28 (Xy(p)), Crosita altaica and C. rugulosa 2n = 30 (Xy(p)), Phratora polaris, Ph.

Review of the genus Cystocnemis (Coleoptera: Chrysomelidae: Chrysomelinae) with descriptions of two new species .

Two new species of Cystocnemis (s. str.) Motschulsky, 1860 namely C.

Conflicting mitochondrial and nuclear phylogeographic signals and evolution of host-plant shifts in the boreo-montane leaf beetle Chrysomela lapponica.

We conducted a phylogeographic study on the cold-adapted leaf beetle Chrysomela lapponica, that feeds on willow or birch, by sampling several populations throughout most of the geographic distribution of the species, and by sequencing for each individual one mitochondrial and two nuclear DNA fragments. Patterns of DNA sequence variation from the mitochondrial and nuclear loci, as displayed in the median-joining networks, appear to display contradicting historical signal: a deep genealogical divergence is observed with the mitochondrial genome between the Alpine population and all other populations found in the Euro-Siberian distribution of the species, that is completely absent with both nuclear loci. We use coalescence simulations of DNA sequence evolution to test the hypothesis that this apparent conflict is compatible with a neutral model of sequence evolution (i.

Testing phylogeographic hypotheses in a Euro-Siberian cold-adapted leaf beetle with coalescent simulations.

Few studies to date have investigated the impact of Pleistocene climatic oscillations on the genetic diversity of cold-adapted species. We focus on the geographic distribution of genetic diversity in a Euro-Siberian boreo-montane leaf beetle, Gonioctena pallida. We present the molecular variation from three independent gene fragments over the entire geographic range of this insect.