Abstract
This paper gives a description of the hitherto unknown or poorly known larvae of Rhyacophila rougemonti McLachlan 1880, R. trifasciata Mosely 1930, R. pallida Mosely 1930, and R. tarda Giudicelli 1968 (Trichoptera: Rhyacophilidae). Information on the morphology of the larvae is provided, and the most important diagnostic features are figured. This dataset is included in a discriminatory matrix of the Rhyacophila larvae with tetrafilament (i.e., four-filament) abdominal gills of Italy and Corsica described so far; only the species pair Rhyacophila pallida / R. tarda in Corsica remains unresolved. Larvae can be separated by the number of metathoracic gill filaments and anal proleg morphology, and by distribution patterns. Endemism is high in the species quartet described in the present paper: Rhyacophila pallida and R. trifasciata are Sardo-Corsican endemic species, R. tarda is restricted to Corsica, and R. rougemonti is a South-Apennine endemic species.
References
Buholzer, H. (1978) Larvenmorphologie und Verbreitung der schweizerischen Rhyacophila Arten (Trichoptera, Rhyacophilidae). Ph.D. thesis, ETH Zürich, Zürich, 151 pp.
Cianficconi, F. (2002) The third list of Italian Trichoptera (1990–2000). In: Mey, W. (Ed.), Proceedings of the 10th International Symposium on Trichoptera, Potsdam, Germany, July 20–August 5, 2000. Nova Supplementa Entomologica. Vol. 15. Deutsches Entomologisches Institut, Goecke & Evers, Keltern, pp. 349–358.
Cianficconi, F., Corallini, C. & Todini, B. (2008) The genus Rhyacophila Pictet, 1834 in Italy. Ferrantia, 55, 22–32.
Döhler, W. (1950) Zur Kenntnis der Gattung Rhyacophila im mitteleuropäischen Raum (Trichoptera). Archiv für Hydrobiologie, 44, 271–293.
Friedrich, F., Schulz, J., Kubiak, M., Beckmann, F. & Wilde, F. (2015) The larval head anatomy of Rhyacophila (Rhyacophilidae) with discussion on mouthpart homology and the groundplan of Trichoptera. Journal of Morphology, 276, 1505–1524.
https://doi.org/10.1002/jmor.20475
Giudicelli, J. (1968) Les Rhyacophila endémiques de Corse. Description de Rhyacophila tarda n. sp. (Trichoptera). Vie et Milieu, 19 (1-c), 49–54.
Graf, W., Murphy, J., Dahl, J., Zamora-Muñoz, C. & López-Rodríguez, M.J. (2008) Vol. 1. Trichoptera. In: Schmidt-Kloiber, A. & Hering, D. (Eds.), Distribution and Ecological Preferences of European Freshwater Organisms. Pensoft Publishers, Sofia, Moscow, pp. 1–388.
Malicky, H. (2004) Atlas of European Trichoptera. 2nd Edition. Springer, Dordrecht, 359 pp.
Malicky, H. (2005) Ein kommentiertes Verzeichnis der Köcherfliegen (Trichoptera) Europas und des Mediterrangebietes. Linzer biologische Beiträge, 37, 533–596.
Malicky, H. (2014) Lebensräume von Köcherfliegen (Trichoptera). Denisia, 34, 1–280.
McLachlan, R. (1868) Contributions to a knowledge of European Trichoptera. Transactions of the Entomological Society of London, 1868, 289–308.
McLachlan, R. (1879) A Monographic Revision and Synopsis of the Trichoptera of the European Fauna. Part 8. John van Voorst, London and Friedlander & Sohn, Berlin, 72 pp.
McLachlan, R. (1880) A Monographic Revision and Synopsis of the Trichoptera of the European Fauna. Part 9. Supplement 2. John van Voorst, London and Friedlander & Sohn, Berlin, 72 pp. [pp. 13–84]
McLachlan, R. (1884) A Monographic Revision and Synopsis of the Trichoptera of the European Fauna. First Additional Supplement. Napier Printers, London, 76 pp.
McLachlan, R. (1898) Some new species of Trichoptera belonging to the European fauna, with notes on others. Entomologist's Monthly Magazine, 34, 46–52.
Moretti, G.P. (1981) New Trichoptera species and subspecies found in Italy. In: Moretti, G.P. (Ed.), Proceedings of the Third International Symposium on Trichoptera. Series Entomologica. Vol. 20. Dr. W. Junk Publishers, The Hague, pp. 165–192.
https://doi.org/10.1007/978-94-009-8641-1_22
Moretti, G.P. (1983) Tricotteri (Trichoptera). Guide per il riconoscimento delle specie animali delle acque interne Italiane 19. Consiglio Nazionale delle Ricerche, Verona, 155 pp.
Moretti, G.P. (1991) Nouvelles espèces et sous-espèces de Trichoptères Italiens et exemples de variabilité des populations des Alpes Meridionales et des Apenins. In: Tomaszewski, C. (Ed.), Proceedings of the 6th International Symposium on Trichoptera, Łódź-Zakopane (Poland), 12–16 September 1989. A. Mickiewicz University Press, Poznan, pp. 385–402.
Moretti, G.P. (1997) A new species of Rhyacophila (Trichoptera: Rhyacophilidae) from alabria, Southern Italy. Braueria, 24, 4.
Mosely, M.E. (1930) Corsican Trichoptera. Eos, Revista española de Entomología, 6, 147–184.
Navás, L. (1932) Alcuni insetti del Museo de zoologia della R. Università de Torino. Bollettino dei Musei de Zoologia e di Anatomia Comparata della R. Università de Torino, 42, 1–38.
Neu, P., Malicky, H., Graf, W. & Schmidt-Kloiber, A. (2018) Distribution atlas of European Trichoptera. Conchbooks, Goecke & Evers, Keltern, 891 pp.
Nielsen, A. (1942) Über die Entwicklung und Biologie der Trichopteren mit besonderer Berücksichtigung der Quelltrichopteren Himmerlands. Archiv für Hydrobiologie, 17 (Supplement), 255–631.
Pictet, F.J. (1834) Recherches pour Servír à l’Histoire et à l’Anatomie des Phryganides. hez Abraham Cherbuliez, rue de la Cit, Geneva, 235 pp.
https://doi.org/10.5962/bhl.title.8547
Schmid, F. (1947) Sur quelques Trichoptères suisses ou peu connus. Mitteilungen der Schweizerischen Entologischen Gesellschaft, 20, 519–536.
Schmid, F. (1970) Le genre Rhyacophila et la famille des Rhyacophilidae (Trichoptera). Memoirs of the Entomological Society of Canada, 66, 1–230.
https://doi.org/10.4039/entm10266fv
Schmid, F. (1971) Un nouveau Trichoptère des Alpes françaises. L’Entomologiste, 27, 28–30.
Urbanič, G., Krusnik, C. & Malicky, H. (2000) Rhyacophila schmidinarica, a new species of the philopotamoides group (Trichoptera: Rhyacophilidae) from the northern Balkan Peninsula. Braueria, 27, 17–18.
Waringer, J. & Graf, W. (2011) Atlas of Central European Trichoptera Larvae. Erik Mauch Publishers, Dinkelscherben, 468 pp.
Waringer, J. & Graf, W. (2013) Key and bibliography of the genera of European Trichoptera larvae. Zootaxa, 3640 (2), 101–151.
https://doi.org/10.11646/zootaxa.3640.2.1
Wiggins, G.B. (1996) Larvae of the North American Caddisfly Genera (Trichoptera). 2nd Edition. University of Toronto Press, Toronto, 457 pp.
Williams, N.E. & Wiggins, G.B. (1981) A Proposed Setal Nomenclature and Homology for Larval Trichoptera. In: Moretti, G.P. (Eds.), Proceedings of the Third International Symposium on Trichoptera. Series Entomologica. Vol. 20. Springer, Dordrecht, pp. 421–429.
https://doi.org/10.1007/978-94-009-8641-1_52
ZOBODAT (2018) Zoological-Botanical Database of the State Museum of Upper Austria. Available from: http://www.biologiezentrum.at/de/bz/ (accessed 12 June 2018)