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There are an estimated 40,000 species of chrysomelids, or leaf beetles, worldwide. These biologically interesting and often colorful organisms, such as the tortoise beetles, have a broad range of life histories and fascinating adaptations. For example, there are chrysomelids with shortened wings (brachypterous) and elytra (brachelytrous), other species are viviparous, and yet other leaf beetles have complicated anti predator-parasitoid defenses. Some species, such as corn rootworms (several species in the genus "Diabrotica") constitute major agricultural crop pests. "Research on Chrysomelidae 2" is a the second volume of a series of volumes on the Chrysomelidae edited by Jolivet, Santiago-Blay, and Schmitt.
Experts offer the most sweeping reference available on the subject of North American beetles. Their rigorous standards for the presentation of data create a concise, useful format that is consistent throughout the book. This is the resource of choice for quick, accurate, and easily accessible information.
Volume 6/2 of the Catalogue of Palaearctic Coleoptera focuses on the second part of the beetle superfamily Chrysomeloidea reported from the Palaearctic biogeographic region. For the genus and species-groups taxa all relevant names are given and all nomenclatural data are cross-checked and the distribution of species and subspecies is given per country or smaller region. A group of 14 experts have worked to collect data based on a critical review of published sources including a significant amount of new information. This volume is also a tool for specialists as well as amateurs, which warrants unambiguous communication.
List of members in v. 1-3, 5, 14.
The Black Hills, straddling the border between southwestern South Dakota and northeastern Wyoming, represent an ecological "island" of mountainous terrain in the midst of the Great Plains. Streams, rivers, lakes, and ponds are abundant, yet the aquatic insect fauna inhabiting those ecosystems has not previously been compiled in a single document. This work demonstrates that the known fauna of 95 families, 335 genera, and 447 species-level aquatic insect taxa has a curious mix of eastern, western, northern, and southern biogeographic affinities, yet many significant data gaps remain, and this work can only represent a starting point. The Black Hills beckon more curious naturalists to come and add to our knowledge.
The genus Lasiopogon is a widespread group of robber flies (Diptera: Asilidae) inhabiting the north temperate parts of the Earth. This study is the first to examine the genus as a complete entity and clearly define intrageneric relationships. It is also the first to pay special attention to the male and female genitalia, important structures in the taxonomy of the genus. There are 118 known species of Lasiopogon, about half of these yet to be described. Dr. Cannings gives a cladistic overview of some defined species groups, and provides a detailed taxonomic and phylogenetic analysis of the 7 species groups and 29 species in the opaculus section, comprising about 25 per cent of the genus. He describes 14 new species in this section and redescribes the others. Dr. Cannings also offers a biogeographic hypothesis of the history of Lasiopogon, suggesting that the genus may have originated in Laurasia as early as the late Jurassic period.