S. Mahunka szerk.: Folia Entomologica Hungarica 59. (Budapest, 1998)

Oxycera leonina (Panzer, [1798]) The members of the genus Ocycera are not often collected, so theoretically a few species might well be added to the Diptera fauna of Hungary. O. leonina belongs to the less rare species. I collected them mainly on wet places. For example I collected a large series on the muddy border of a pond not far from Budakeszi in the end of July in 1992. In the same month in 1996 I swept specimens in Ocsa and Balatonendréd. Eupachygaster tarsalis (Zetterstedt, 1842) Except the very common Pachygaster atra (Panzer, 1798), the Pachygasterinae are rarely collected. They appear to live a very hidden life. The larvae of E. tarsalis have been found in decaying deciduous trees. On July 2nd 1992 I caught two females in the opening of a hole in a beech-tree near Makkosmária. The third specimen in my collection was taken on a tree trunk at the bus-stop in front of Péterhalmierdő on July 3rd 1994. The breeding of larvae may seem more successful than to collect the imagines in nature. Pachygaster leachii (Curtis, 1824) It is much less rare than it seems. According to the Fauna Hungáriáé it is only collected in the Bükk Mountains. I have been able to catch two specimens in Hungary. The first one, a female, I found on the underside of leaves in Buda on June 23th 1992. The other, a male, I swept in Ságvár on July 29th 1996. Because E. tarsalis. P. leachii and P. atra look very similar with the naked eye, I think it will be possible to find many more specimens of the first two species by studying all Pachygasterinae carefully under the microscope. Neopachygaster meromelaena (Dufour, 1841), which has been found outside Hungary in a similar environment as the other species, might be a rewarding finding. Zabrachia minutissima (Zetterstedt, [1838]) and Zabrachia tenella (Jaennicke, 1866) Z. minutissima and Z. tenella are two fine examples of those species, which seem to be very rare, yet are relatively common. Z. tenella has not been mentioned before from Hungary. I bred hundreds of specimens of both species from larvae, recovered from under pine-bark in Péterhalmierdő. From both species I deposited only 30 specimens in my collection. Furthermore I deposited from both species a male and female in the collection of the Hungarian Natural History Museum of Budapest. I bred about the same number of specimens of both species; therefore I cannot say whether one species is more common than the other in Péterhalmierdő. Until now I have not been able to collect the imagines in nature, though I swept often under pine-trees, where I found the larvae. Though I found their larvae in quite large numbers in pine-forests all over Hungary.