Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 6. (1980)

Kiss, O.: A Mátra hegység Ilona-völgyének Trichopterai

Fig. 7. Locality I

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. 1. large stones, 2. small stones and gravel, 3. sand, 4. slime, 5. detritus, 6. micro-waterfall. Locality I

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at the sign-board 'Nature conservation area' (Fig, 8.) : The bed is of 2 m width, with rapid water flow and is completely shaded by Fagus silvatica. Large stones and stones, gravel, sand and detritus accumulations are on the bottom. The average depth of water is 12 cm, at some places it ranges to 20 cm. The water temperature was 15.8 °C on 18th July, 1977 and 9.0 °C on 2nd Oct. 1977. The species collected are as follows :Rhyacophila obliterata MAC LACHLAN, Polycentropus flavomaculatus PICTET, Plectrocnemia conspersa CURTIS, Ecclysopteryx madida MAC LACH123