Description of the larvae of Limnephilus femoratus (Zetterstedt, 1840) and Limnephilus subnitidus McLachlan, 1875, with additional notes on Limnephilus picturatus McLachlan, 1875 (Trichoptera: Limnephilidae)
2011
Waringer, J. (Johann) | Graf, Wolfram | Malicky, Hans
The paper gives a description of the hitherto unknown larvae of Limnephilus femoratus (Zetterstedt, 1840) and Limnephilus subnitidus McLachlan, 1875. Information on the morphology of the fifth instar larvae is given, and the most important diagnostic features are illustrated. In the context of already available keys, the larva of Limnephilus femoratus (Zetterstedt, 1840) keys out together with L. borealis (Zetterstedt, 1840) and L. fuscinervis (Zetterstedt, 1840). Both species may be separated by gill positions and the coloration of the ventral edge setae on the foreleg femur. Limnephilus subnitidus keys together with L. centralis Curtis, 1834 and L. bipunctatus Curtis, 1834. In this case, the species can be separated by the number of intermediate c-setae on the ninth abdominal tergite and differences in head width. Finally, L. picturatus keys out together with L. binotatus or L. decipiens, which may be separated by the length of the tarsal claws of mid and hind legs. With respect to zoogeography, Limnephilus femoratus and L. subnitidus have a boreal distribution and are known from Russia, Sweden and Norway; they are limnobionts and typical inhabitants of the littoral zone of lakes and swamps.
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