Janus Pannonius Múzeum Évkönyve 38 (1993) (Pécs, 1994)

Természettudományok - Nógrádi, Sára–Uherkovich, Ákos: The Trichoptera fauna of the lake Balaton and its catchment area (Hungary)

39 Fig. 5. Hungarian distribution of Erotesis baltica McL. 5. ábra. Az Erotesis baltica McL. magyarországi elterjedése Fig. 7. Hungarian distribution of Hydroptila dampf! Ulmer 7. ábra. A Hydroptila dampfi Ulmer magyarországi elterjedése Some interesting species Lype phaeopa Hag. - This species lives in larger rivers and sometimes in small brooks of low hilly regions. It is quite frequent in the unpolluted branches of the rivers Danube and Dráva, but very rare in small brooks and creeks. It was a great surprise when the first specimen has been found in the light trap material of Tihany-Sajkod, because there is no brooks in the vicinity. As the material examined contains 62 specimens (6 cfcf and 56 ??), it is sure, that the larvae of L. phaeopa are living in the Sajkod Bay of Balaton. The deepest point of the lake is situated close to the occurence of the species. The stream of the water is remarkable in the Sajkod Bay and phaeopa larvae can make their nets amongst stones or plants. Erotesis baltica McL. - This very rare species is mentioned by ÚJHELYI (1971) from Veresegyháza and Budapest, later it was taken at Balatonalmádi (ÚJHELYI 1979). One male specimen was collected at TornanádasFig. 6. Hungarian distribution of Ceraclea riparia Albd. 6. ábra. A Ceraclea riparia Albd. magyarországi elterjedése Fig. 8. Hungarian distribution of Orthotrichia angustella McL. 8. ábra. Az Orthotrichia angustella McL. magyarországi elterjedése ka (May 28, 1989, leg. Á. Uherkovich), later an other specimen has been found in the light trap material of Hosszúvíz, County Somogy (NÓGRÁDI, UHERKOVICH 1992) and the authors collected the species again at Somogyszob, Baláta Lake (July 3, 1991). Accordingly four of its known seven localities can be found in the catchment area of Balaton (Fig. 5). Agraylea multipunctata Curt. - Beside an old data from Budapest the species is only known from three further sites (Kenderes, Fácánkert and Tihany-Sajkod). As only very few specimens were taken in its each known sites, A. multipunctata is one of the rarest caddisfly species in Hungary. It lives in stagnant waters and also abides a little saline and sodic lakes. Ceraclea riparia Albd. - Several occurences are published by ÚJHELYI (1971). The species became rare in the past decades. It was only captured in four sites (Körösladány, Magyarszombatfa, Kisbalaton, Halászi). The early stages also live in stagnant waters (Fig. 6).