A New Records ofEpeorus Yougoslavicus(Šamal, 1935) [Ephemeroptera] in Serbia and Montenegro

Abstract

During hydrobiological investigations of diversity of rivers and brooks of Serbia andMontenegro, new records of Ephemeroptera species, Epeorus yougoslavicus (12) was ascertained, in period from 2000 to 2005 years. The find of this species, except that it enriches diversity of Ephemeroptera fauna of Serbia and Montenegro, is also important for knowledge of distributions of this species. New biotopes of this species in Gobeljska River on Kopaonik Mountain represents the most northward border of its areal, known until now. On all bitopes where it was found in Serbia and Montenegro, the species occurs in very rare populations, that is a case and with its other until now known finds on Balkan and Apennine peninsula. Small populations and mutually isolated bitope can be taken as parameters on which this species can be consider as endangered for territory of Serbia and Montenegro.

New data on the distribution and ecology of the mayfly larvae (Insecta: Ephemeroptera) of Serbia (central part of the Balkan Peninsula)

“…The rest of the genera are represented by fewer species (fewer than 10). During this investigation of lotic systems in Serbia, 2 species were recorded for the first time: Epeorus yougoslavicus (Samal, 1935) (Petrović et al, 2006) and Choroterpes picteti (Eaton, 1871) (Simić et al, 2005).…”

How Important are Small Lotic Habitats of the Western Balkans for Local Mayflies?

“…At the moment, due to the efforts of local researchers, mayfly fauna is relatively well known in Croatia [e.g. 18, 59-61], Macedonia [62] and Serbia with Kosovo* [17,63,64], while the data are still rather scarce from Albania [32] Bosnia and Herzegovina [3,65,66] and Montenegro [28,40,41,67,68] (Table 15.1).…”

“…Although E. yougoslavicus shares the same (micro) habitat preferences as E. assimilis, i.e., lithal in fast current areas [88], Živić [89] found it in only one stream (Vrla stream, southeastern Serbia, the South Morava basin). Petrović et al [67] recorded the species at two more rivers in Serbia (Gobeljska river and Masurička Reka river, the basin of South and West Morava rivers), also with exceptionally low population densities. Based on the available data, E. yougoslavicus inhabits rhithral section (upper reaches) of xenosaprobic mountainous and foothill streams and rivers, where it can be found in microhabitats characterized by boulders and cobbles and fast current velocity [16,67].…”

“…Petrović et al [67] recorded the species at two more rivers in Serbia (Gobeljska river and Masurička Reka river, the basin of South and West Morava rivers), also with exceptionally low population densities. Based on the available data, E. yougoslavicus inhabits rhithral section (upper reaches) of xenosaprobic mountainous and foothill streams and rivers, where it can be found in microhabitats characterized by boulders and cobbles and fast current velocity [16,67]. This stenovalent species (especially regarding temperature, oxygen and water velocity parameters) can be considered as endangered in Serbian lotic habitats due to the small number of populations and relatively mutually distant and isolated biotopes.…”