S. Mahunka szerk.: Folia Entomologica Hungarica 62. (Budapest, 2001)

Leuctra carpathica is a rare, montane species (Kis 1974), which was only found in a few localities in the Carpathian Mountains (So

va 1970, Kis 1974, Zhilczova 1977) and from Pohorje Mountains, Slovenia (Sivec 1982) and neighbouring territory of Austria (Graf & Weinczier 1999). Its appearance in Hungary was not expected, because all of its previously known localities were small creeks at 1000-2000 meters. In the Zemplén Mts, on the upper course of Nagy-patak [creek] by Füzér L. carpathica occurred at 650 meters. Nagy-patak [creek] runs here in a narrow valley surrounded by beech. Although the valley faces southwest it is rather cool. The creek originates from oozing water. A few meters further up the collecting place of L. carpathica the creek is already seasonal. At the collection site the creek is 1.0-1.5 meters wide and 0.15-0.20 meter deep. The bottom of the creek is andésite with some sandy-muddy parts, full with stones with the size of 0.15-0.25 meter and covered with mould. The valley is steep, there are small waterfalls one after the another. The fauna of Nagy-patak [creek] is rich down to the tourist-house situated a few meters downstream to our collection site. Beside L. carpathica there are five other Leuctra, some mayflies and Astacus species living in the upper course. By the touristhouse beech is replaced by locust-tree, and the creek loses its rich fauna. The distinctive features of L. carpathica are characteristic. It is not problematic to differentiate male and female imagoes from other Leuctra species {prima group) (Figs 4a-b). As we noticed during our collections, the light and dark coloured pattern of freshly hatched imagoes is typical. We documented this pattern on the head and pronotum of L. carpathica and L. prima as a new determination feature (Figs 2e and 4e). Flying time of L. carpathica is in August and September. The imagoes, which we collected, were sitting on stones and leaves fallen in water in slightly cloudy, but warm weather. We found less L. carpathica than L. digitata imagoes, which swarms in the same time. Fig. 5. Leuctra mortoni end of female abdomen. - a: lateral view; b: ventral view