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

The taxonomic place of P. pallida is controversial; it may be a reason why the species was not reported from Hungary earlier. P. pallida appears in Eastern Europe and Middle East living in mountains of medium height and it seems to be moderately widespread. Revision of Hungarian collections may reveal more imagoes than it has been believed before. Unfortunately we could not observe the swarming of this species this year, so we could not report definite data, but many undetermined Perla-larvae in our collection led us to the conclusion that this species may occur in many localities in Hungary. Its swarming time is in the summer. Its occurrence in Hungary is rather sporadic above sea level, 200-300 meters high, but both valleys in the middle of the Zemplén Mts have cold, chilly climate, facing north. They were found in the lower part of the creeks with higher water output, where the valley is wider. Although along the upper, gorge-like part of Cserenkő-patak [creek] a large number of larvae belonging to this genus can be found potentially they represent P. pallida also. Both collections sites were bordered with alder 1.5 and 2-3 meters wide. The depth of Komlóska-patak [creek] is changing depending on rainfall, and the depth of Cserenkő-patak [creek] is 40-50 centimeters. At the collection sites creeks are not so fast, their bottom is sandy with bigger stones. Like all Perla species, P. pallida lives in not disturbed waters having a rich fauna. In the upper part of the river trout were also observed, it is possible that the P. pallida larvae enticed them to this part of the creek. The imago collected for the first time flew in alder wood in the warm summer weather, besides it only a female Isoperla sp. was collected, but Perla exuviums could be seen at many places. At the upper part of the creek there were other species (females of Leuctra nigra and Nemoura spp.) swarming, which presumably have already swarmed at the lower part, and no exuviams could be found. The second imago was found in a puddle together with a female imago of Protonemura intricata and some Ephemeroptera species in the hot weather of July. Although P. pallida is considered variable, and divided into subspecies, or earlier in different species (Klapálek 1902, Classen 1940), the colour-pattern of the head of the collected animals and the shape of the extension of the 10th tergite looked at from the side makes possible to distinguish this species from other Perla species. In Fig. 3-e there is a drawing of the first footpair of the specimen found in Cserenkő-patak [creek] with an interesting outlook of the left, greatly crippled feet, which might have resulted from a larvahood injury. Two Plecoptera species new to the Hungarian fauna In our collection we found imagoes of two Plecoptera species new to the Hungarian fauna, the places of occurrence of the species are shown in Fig. 1. The appearance of two of these four species (L. prima and P. pallida) was expected, the only reason why we have not had any data from Hungary, can be explained with patchy, rare collection sites and with taxonomic uncertainty. The appearance of the third species (L. carpathica) in Hungary is a surprise, with it the fauna of the Zemplén Mts and Hungary became richer with a valuable montane species. Also the Leuctra mortoni in Hungary from the Szalajka-patak [creek] in the Bükk Mts also a good species which lives in mountain creeks up 2000 m.