Ann. Limnol. - Int. J. Lim.
Volume 43, Number 1, 2007
|Page(s)||61 - 74|
|Published online||15 January 2009|
Key to the larval stages of aquatic true flies (Diptera), based on the operational taxa list for running waters in Germany
Senckenberg Research Institute and Natural History Museum, Department of Limnology and Conservation, Clamecystrasse 12, D-63571
2 Philipps-University Marburg, Department of Biology, Zoology, Marburg, Germany
Corresponding author: Andrea.Sundermann@senckenberg.de
The aquatic larvae of the Diptera are often the most abundant and most diverse group of the benthic macroinvertebrate fauna. They are able to survive in and colonise practically all freshwater habitats, and some species can tolerate harsh environmental conditions. They are therefore both a qualitatively and quantitatively important group of biological indicators for assessing freshwater systems. On the other hand their determination at the species level is very difficult. This is in part due to a lack of taxonomic work in the group, but also the absence of comprehensive determination keys, that meet the needs of water managers. As a result, the aquatic larvae of the Diptera often play a subordinate role in water management. In light of the EU Water Framework Directive the present work is a first step in improving the integration of the important group of the Diptera in water management practice: a comprehensive determination key, which is geared at water managers. The key includes 60 taxa, largely at the family and genus level. In contrast to already existing keys the present work tries to differentiate the taxa on the basis of simple and user-friendly characters. Numerous figures allow for easy checking of determination results. The key is applicable in Germany, Scandinavia, Great Britain and the Benelux states. Mainly taxa from running water systems are considered, but the key can also be used at the family level to determine taxa from standing water bodies.
Key words: Dichotomous key / aquatic diptera / operational taxa list / water framework directive
© Université Paul Sabatier, 2007
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