Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 15. (1990)

Uherkovich, Á.–Nógrádi, S.: The Trichoptera fauna of the Great Hungarian Plain, Hungary

Sericostonatidae Notidobia ciliaris LINNAEUS, 1761. Ecser 29.4.1972 5 Sé 2 o^ Cuj). DISCUSSION Till recent time 92 species have already been known from the Great Hungarian Plain, representing 46.7 p. с of the entire known Hungarian Trichoptera fauna С altogether 197 species). 17 of 92 species have only one known collecting site, further 10 species have 2 sites. The remaining 65 species have 3 to 65 localities. The most distributed species are Oecetis ochracea CURT. С 46 collecting sites), Hydropsyche bulgaromanorum MAL. С 45), Limnephilus affinis CURT. С

39 J, Liranephilus vittatus FABR. С 38) and Grammotaulius nigropunctatus RETZ. C38). These 92 species were collected in 122 localities occupying 102 squares of the UTM grid map С see Fig. 2). Most of the localities are situated in the area between the rivers Danube and Tisza, along the southern margin of the Northern Mountains and along the river Körös. Only one or two species were collected in 49 localities С

34 squares). The area of the Plain covers about 460 squares each 100 sq. km, thus only 22 p. c. of the squares have occurence data of caddisflies. The maximum number of species is 40 per square, in DT27 С Jászárokszállás) and DT69 С Mezőkövesd). In other six squares 30 or more species were pointed out. The number of species is between 20 to 29 in 8 squares (Fig. 12). The southeastern part of the Plain is very poorly known. The bulk of the species of the Great Hungarian Plain is common all over the country. The have wide ecological range and they are rather lively ones. Some other species occur very sparsely all over the country and they occur in the Plain, too. S.ucu species are: Agraylea multipunctata CURT., Hydroptila occulta EATON CFig. 6), Phryganea bipuncta RETZ.

, Holocentropus dubius RAMB., Brachycentrus subnubilus CURT. CFig. 9), Athripsodes albifrons L., etc. Other species the inner migrants - can occur occasionally, but they don't live С don't develop) in the Plain Vwrfy likely Cstenophylax permistus McL., Micropterna species, some other limnephilids). The most intereseting species were collected along the northern and eastern margin of the Plain. These have only one or two collecting sites and they probably were swept away from the neighbouring mountainous regions, e. g. from the Bükk Mountains and from Transsylvania. Such species are Cheumatopsyche lepida PICT., Mystacides azurea L.

, Crunoecia irrorata CURT., Halesus tesselatus RAMB., Glossosoma boltoni CURT, and Lype phaeopa STEPH. Some of them (mostly the two latter ones) may be members of the fauna of river Körös. It has two branches: Fekete- С Black) and Fehér- С White) Körös are the clearest large rivers of Hungary, they run relative quickly and the Transsylvanián mountains are not too far from the collecting sites Ce. g. Sarkad-Malomfok, Sarkad-Remete). Only two species preferring the Plain are known: Parasetodes respersella RAMB. and Grammotaulius nitidus MÜLL. P. respersella was captured mostly during the sixties, in the past two decades no specimens were found CFig. 11). In 1989 and 1990 it was collected by Uherkovich in the Caspian Lowland, west from Makhachkala. Maybe the area of this species has get contracted in the past decades. Grammotaulius nitidus MÜLL. keei>s away from wet, afforested regions of Hungary. Thus it is very rare in Southwest Transdanubia, in Bakony Mountains and in northern part of the Northern Mountains CFig. 10). G. nitidus may develop in little salty or alkaline lakes and ponds. The phenology of the most frequent species is ordinary. The summer diapause of limnephilids is well developed, no irregular swarming can be observed at Limnephilus species CFigs. 13-15). 67