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A HYBRID POPULATION OF NEPHROTOMA (DIPTERA: TIPULIDAE) FROM A CENTRAL TEXAS REFUGIUM

Published online by Cambridge University Press:  31 May 2012

Pjotr Oosterbroek  and
Ida R.M. Tangelder
Pjotr Oosterbroek
Affiliation:
Institute of Taxonomic Zoology, University of Amsterdam, Plantage Middenlaan 64, 1018 DH Amsterdam, The Netherlands
Ida R.M. Tangelder
Affiliation:
Institute of Taxonomic Zoology, University of Amsterdam, Plantage Middenlaan 64, 1018 DH Amsterdam, The Netherlands
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Abstract

A discussion is presented about specimens that are morphologically intermediate between Nephrotoma ferruginea (Fab.) and N. suturalis suturalis (Loew). The specimens came from far outside the present ranges of these two species, namely Kerrville, Texas. It is concluded that the specimens might represent a population of hybrids. It is further estimated that the withdrawal of the parental species from central Texas could possibly have occurred a thousand years ago or earlier.

Résumé

Il s’agit d’une discussion concernant des spécimens morphologiquement intermédiaires entre Nephrotoma ferruginea (Fab.) et N. suturalis suturalis (Loew). La provenance de ces spécimens, Kerrville au Texas, est bien en dehors des limites connues présentement de ces deux espèces. On conclut que ces spécimens pourraient représenter une population d’hydrides. On estime de plus que la disparition des espèces parentales du centre du Texas pourrait avoir eu lieu il y a mille ans ou plus.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 1 , January 1987 , pp. 45 - 47
Copyright
Copyright © Entomological Society of Canada 1987

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