title: Larval morphology and identification ofRhyacophila meyeri(Trichoptera: Rhyacophilidae).
abstract: This paper describes the previously unknown larva ofRhyacophila meyeriMcLachlan 1879. Information on the morphology of the 5th larval instar is given, and the most important diagnostic features are illustrated. In the context of existing identification keys the larva ofR. meyerikeys together withR. stigmatica(Kolenati 1859). The species pair can be separated by differences in the setation pattern at the anterior pronotal border and maximum head width. With respect to zoogeography,Rhyacophila meyeriis reported from Switzerland and northern Italy whereasR. stigmaticais restricted to the Austrian, German and Swiss Alps and northern Slovenia (Cianficconi 2002; Grafet al. 2008; Lubini-Ferlin & Vicentini 2005; Malicky 2009; Robert 2004).
authors.affiliation: Department of Limnology & Bio-Oceanography, Faculty of Life Sciences, University of Vienna, Austria.
authors.forename: Johann
authors.initials: J
authors.lastname: Waringer
authors.affiliation: Department of Limnology & Bio-Oceanography, Faculty of Life Sciences, University of Vienna, Austria.
authors.forename: Simon
authors.initials: S
authors.lastname: Vitecek
authors.affiliation: Institute of Hydrobiology and Aquatic Ecology Management, University of Natural Resources and Applied Life Sciences, Vienna, Austria.
authors.forename: Wolfram
authors.initials: W
authors.lastname: Graf
keywords: 5th instar larvae; Rhyacophila meyeri; caddiesflies; distribution; key