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A Molecular And Morphological Investigation Of The Springtail Genus Orchesella (Collembola: Entomobryomorpha: Entomobryidae), Catherine Louise Smith

Masters Theses

Chapter 1 is devoted to a molecular overview of the North American members of the springtail genus Orchesella using mitochondrial and nuclear DNA. Both genes strongly support the presence of four major clades within Orchesella. Chapter 2 is a morphological revision of the species near Orchesella celsa Christiansen & Bellinger. Five new species are described based largely on chaetotaxonomical differences in. Chapter 3 is an investigation into the origins of United States populations of two introduced European members of the genus, Orchesella cincta Linnaeus and Orchesella villosa Linnaeus. Mitochondrial data between populations from the two continents indicates multiple introductions for …

Identificación De Las Especies Mexicanas Del Género Xyleborus Eichhoff, 1864 (Coleoptera: Curculionidae: Scolytinae), Mauricio Pérez Silva, Armando Equihua Martínez, Thomas H. Atkinson

Insecta Mundi

Xyleborus is one of the most diverse and abundant genera of ambrosia beetles, several species of which are considered important tropical pests. Given the current importance of this group, we present taxonomic keys for the 18 Mexican species of Xyleborus, using distinct external morphological features. A brief diagnosis and illustrations are included for each species.

Xyleborus es uno de los géneros más diversos y abundantes de coleópteros ambrosiales; algunas especies son consideradas plagas tropicales importantes. Debido a su importancia actual, se presenta una clave taxonómica enfocada a las 18 especies mexicanas del género Xyleborus, para lo cual se …