Description of a new species of Wormaldia from Sardinia and a new Drusus species from the Western Balkans (Trichoptera, Philopotamidae, Limnephilidae).
New species are described in the genera Wormaldia (Trichoptera, Philopotamidae) and Drusus (Trichoptera, Limnephilidae, Drusinae). Additionally, the larva of the new species Drususcrenophylax sp. n. is described, and a key provided to larval Drusus species of the bosnicus-group, in which the new species belongs. Observations on the threats to regional freshwater biodiversity and caddisfly endemism are discussed. The new species Wormaldiasarda sp. n. is an endemic of the Tyrrhenian island of Sardinia and differs most conspicuously from its congeners in the shape of segment X, which is trilobate in lateral view. The new species Drususcrenophylax sp. n. is a micro-endemic of the Western Balkans, and increases the endemism rate of Balkan Drusinae to 79% of 39 species. Compared to other Western Balkan Drusus, males of the new species are morphologically most similar to Drususdiscophorus Radovanovic and Drususvernonensis Malicky, but differ in the shape of superior and intermediate appendages. The females of Drususcrenophylax sp. n. are most similar to those of Drususvernonensis, but differ distinctly in the outline of segment X. Larvae of Drususcrenophylax sp. n. exhibit toothless mandibles, indicating a scraping grazing-feeding ecology.
Department of Limnology and Oceanography, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria.
Simon
S
Vitecek
Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia.
Ana
A
Previšić
Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia.
Mladen
M
Kučinić
Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, D-60325 Frankfurt a.M., Germany.
Miklós
M
Bálint
Hungarian Department of Biology and Ecology, Babeş-Bolyai University, Clinicilor 5-7, 400006 Cluj-Napoca, Romania.
Lujza
L
Keresztes
Department of Limnology and Oceanography, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria.
Johann
J
Waringer
Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, D-60325 Frankfurt a.M., Germany.
Steffen U
SU
Pauls
Sonnengasse 13, Lunz am See, Austria.
Hans
H
Malicky
Institute of Hydrobiology and Aquatic Ecology Management, University of Natural Resources and Life Sciences, Max Emanuel-Strasse 17, A-1180 Vienna, Austria.
Wolfram
W
Graf
Caddisfly; Europe; Mediterranean; conservation; hydropower; larval key; taxonomy