S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

collected regularly along the upper branches of Danube (Szigetköz) and along the Dráva river, in three sites (Drávasztára, Ortilos, Vejti). Another specimen was captured at Szalafő (West Hungary). Rh. dorsalis lives in the Austrian branches of Danube, too (Malicky 1978, 1981). Újhelyi (1981) mentioned another data from Danube (around Budapest) which were accepted by us with some scepticism earlier. This species is rather frequent in small mountainous rivers (Malicky 1981). Oxyethira flavicornis Pictet. Its first data from Hungary was reported by Nógrádi (1985a). Since that time it was collected in several sites. At places it is rather common, thus hundreds of specimens were captured in Northwest Hungary, in a few localities along the Moson branches of Danube (Mosoni-Duna). It proved to be rather frequent along Dráva river, mostly in the ponds of pebble pits nearby Gyékényes. Other localities were also found. Brachycentrus suhnubilus Curtis. Earlier we collected this species only in seven sites, in all of them only one or two specimens. In the years 1991, 1992 and 1993 further several specimens were found in four collecting sites along the upper branches of Danube (Cikolasziget, Kimle, Lipót, Máriakáinok) and at four sites along the Dráva river (Drávaszabolcs, Vejti, Drávasztára, Vízvár). As B. subnubilus is on wing very early (mostly in April), before the high season of caddisflies, thus it easily escapes attention. Limnephilus elegáns Curtis. It was reported first by Újhelyi (1983) from Magyarszombatfa, West Hungary. Later we collected again this rare species at the same place, then one single specimen was captured in the Zselic Downs, South Hungary (Nógrádi 1988, Nógrádi, Uherkovich 1990). We suppose that its first Hungarian biotope has been deteriorated by drainage. In the year 1991 two specimens were taken by a portable light trap just functioned along the Danube (Győrzámoly, Patkányosmajor, damwatchman's house, July 9, 1991, 1 d 1 Ç ). It is probable that the biotope of this population will soon be damaged in consequence of the well-known change of water supplying of Szigetköz. Limnephilus elegáns is close to extinction in Hungary. Halesus radiatus Curtis. This species has only old data from the Northern Mountains. Along Danube some specimens were taken in the years 1991, 1992 and 1993 (Kimle, Dunaremete, Győrzámoly-Patkányosmajor, Halászi). Typical autumn species, the imagos were collected in October and November. Its habitats are in destruction due to the "regulation" of Danube by the Gabcikovo hydroelectric power plant. Actually an endangered species! Platyphylax frauenfeldi Brauer. We have dealt with the Hungarian distribution of this species several times (e. g. Nógrádi 1988, Uherkovich, Nógrádi 1992b). Its eighth home locality is Ortilos, SW Hungary. 11 males and 2 females were taken in the year 1992 (Oct. 18-28) and further 17 males and 8 females in the year 1993 (Oct. 11-Nov. 9) by light trap set up along the Dráva river. This caddisfly is one of the most valuable and most interesting members of the Hungarian fauna since it has become extinct from "classic" localities discovered during the last century. During recent decades only Hungarian specimens were captured. The list of protected Hungarian plants and animals contains this rarity, also. Silo piceus Brauer. Almost all specimens of the Hungarian collections proved to be Silo pallipes as result of a revision in 1988-89. Thus the majority of literature data is erroneous, and Silo piceus is a very rare member of the Hungarian caddisfly fauna. Authentic specimen was not examined by us, thus we were not sure, whether it was still native in