S. Mahunka szerk.: Folia Entomologica Hungarica 44/2. (Budapest, 1983)

Agrypnla varia Fabr. - The most common Phryganea species of the Fertő. It was found to be active in September and August of all the three study years. Phryganea grandis L. - Only two specimens (cf, o.) were collected, on 28 July, 1978. LIMNEPHILIDAE Limnephllus afflnis Curt. - The most common Limnephllus species of the Fertő. It was active in May and October in 1976, in April - May and September in 1977 and in May and September - October in 1980. Limnephllus blnotatus Curt. - It occurred in small numbers In all the three years, but consistently in July-August. Limnephllus flavlcornls Fabr. - A common species developing in standing waters. A few specimens occurred sporadically. Llmnephilus decipiens Kol . - Develops in both standing and flowing waters. The light trap at Fertőrákos caught a cf specimen on 18 May, 1977. Llmnephilus lunatus Curt. - A cf specimen was caught on 10 September, 1980. Limnephllus sparsus Curt. - One cf collected between 16 and 20 September, 1978. Limnephllus rhomblcus L. - Two cf on 19 August, 1980. Grammotaulius nitidus Müll. - One cf on 25 August, 1980. LEPTOCERIDAE Athrlp8odes aterrimus Steph. - Only one cf was collected between 26 and 31 July, 1978. Mystacites longlcornis L. - Similarly to the previous species, it develops in all kinds of standing waters. It was recorded at the Fertő in not very large numbers, but always in the second half of the vegetation period (July-August). Ceraclea aurea Pict. - A characteristic animal of large rivers of lowlands. Three cf and one o were caught by light trap between 21 and 25 July, 1977. Ceraclea dissimllis Steph. - According to literature data i* inhabits flowing waters in preference (BOTOSANEANU & MALICKY, 1980). Two cf specimens were found between 21 and 25 July, 1978. Ceraclea senilis Burm. - A common species beside standing waters; it has been found over most of Europe. Two cf and 1 o. were collected by light trap on 20 June, 1976. Oecetls furva Ramb. - It was found in all the three years, though sometimes in small numbers. Active in July and August. Oecetls lacustris Pict. - Only 2 cf were collected on 2 August, 1976. Oecetis ochracea Curt. - The most common Oecetls species of the environments of the Fertő. Its ecological requirements are similar to the other two species of the genus; it is a characteristically limnophilous animal. It flies between May and September continouosly. DISCUSSION There are no published systematico-faunistical data on the imagos of Trichoptera developing in standing waters in Hungary. This naturally does not mean that we have no sporadic, scattered information on the faunistlc composition of these standing waters. Light traps set to catch Lepidoptera often collected considerable quantities of mayflies, and identification of these materials often supplements our knowledge. Thus it is possible to outline the composition of the Trichoptera faune usual for the standing waters in Central Europe. Detailed faunistical studies have yet a lot to clarify both as regards the fragile small-sized species and the population dynamics of the abundant species. It is a result of the three-year study that the occurrence at Fertő of the rare species Hydroptila dampfi Ulm., new to the fauna of Hungary, has been shown. Little is known of the ecology of this species and the female is unknown. Previous occurrences of this species are from the Baltic area. Its occurrence at Fertő substantiates the assumption that it is essentially a species of standing waters. It has been shown unequivocally that it develops in the lake itself, since two males were collected by trap set for emerging insects from a Myriophyllum spicatum spot of the bay at Fertőrákos on 25 August, 1980. Another interesting aspect of the collected material is the unexpectedly high numer of species