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The Horse Flies (Diptera: Tabanidae) of Nature Park Kopački rit (Croatia)

Kopački rit is a floodable region behind the right bank of the Danube in the north - east of Croatia in the corner made by the Drava and the Danube. This is one of the largest fluvial - marshy plains in Europe. Since this habitat has all the characteristics of a wet biotope, it is rich with species that are, at least in one part of their life, bound to water. The horseflies (Tabanidae) live also in that area. They emerge mostly around the end of May and are most abundant during the summer months when during the day and towards the evening they disturb various endothermic animals. Faunal research work on horseflies in the area of Nature Park Kopački rit was carried out in May, June, July, August and September of 1998, 1999 and 2000. Several specimens were also collected earlier during the 1980’ s. All together 4033 specimens were collected. The collected specimens were classified into 25 species. The genus mostly represented is Tabanus with 7 species, followed by Hybomitra with 6 species, Haematopota with 5 species, Chrysops with 4 species, Atylotus with 2 species and Heptatoma with 1 species. The most abundant species of horseflies in the studied area is Hybomitra ciureai with a share of 26, 58% in the collected sample. It is followed by Tabanus bromius with 21, 27% and Haematopota pluvialis with 17, 48%. A total of 65, 33% of horseflies collected in Nature Park Kopački rit belongs to these 3 species, while the remaining 22 species take up the rest of 34, 67% of specimens. The determined species have been collected on 12 stations that cover 3 fields on the UTM grid of Croatia.

Tabanidae; Kopački rit; UTM

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