3 Ergebnisse.

Abstract:The mechanism proposed for the isolation of two sibling species of damselflies, Enallagma pollutum and Enallagma signatum, is a tactile isolation based on the shape of the male anal appendages that are used to hold the female during tandem formation.Dissertation Discovery Company and the University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Reproductive...

Abstract:The mechanism proposed for the isolation of two sibling species of damselflies, Enallagma pollutum and Enallagma signatum, is a tactile isolation based on the shape of the male anal appendages that are used to hold the female during tandem formation.Dissertation Discovery Company and the University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Reproductive...

This monograph is the first of its kind devoted entirely to the dragonfly nymphs of North America north of Mexico, the focus being accurate identification of the 330 species of Anisoptera that occur in the region. Nymphal external morphology is described and illustrated in detail, and all terms needed to navigate the dichotomous keys are defined. Species are tabulated with references that provide the most detailed, accurate descriptions for ea...