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Abstracts
In this study, the structure of egg capsules of two species of Neotropical Perlidae: Anacroneuria starki FENOGLIO and MORISI (2001a) and A. talamanca STARK (1998), were examined. Eggs were studied using a scanning electron microscope. A morphological characterization of these eggshells is presented: layers, attachment structures and other anatomical features are described. The egg capsules of the two species differ in some aspects, but both are characterized by thin-layered egg coverings (vitelline envelope, chorion and extrachorion). On the basis of these observations, the importance of eggshell structure for the biogeographical distribution of Plecoptera in the tropics is discussed. A key role for egg capsules in the adaptation process of Plecoptera to aquatic environments of the Neotropics is hypothesized.
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159-164
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author
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ARTICLE
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S. Fenoglio, Department of Advanced Sciences and Technologies, University of Eastern Piedmont, Via Cavour 84, Alessandria, 15 100 Italy
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bwmeta1.element.element-from-psjc-c772930b-292b-3042-9039-d51483c55f06