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Distribution of the species Heptatoma pellucens (Fabricius, 1776) (Diptera: Tabanidae) in Croatian part of Baranja

The family Tabanidae contains 220 species distributed in Europe, of which 78 species are classified into 10 genera, five tribes and two subfamilies present in the fauna of Croatia. In the Croatian part of Baranja, 34 species of horseflies were recorded. The genus Heptatoma contains only the species Hepatoma pellucens, distributed almost throughout the Palaearctic region. Recently, based on the difference in the larval stages between the species of the genus Haematopota and the species Heptatoma pellucens, the genus Heptatoma was separated from the tribe Haematopotini into a separate tribe Heptatomini. By reviewing the literature data and the results of earlier research, the species Heptatoma pellucens was recorded in 31 localities in Croatia. The findings of this species in the localities of Branjina, Karanac and Kotlina on Bansko Hill during this year represent new locality records, and the total number of recorded localities where the species Heptatoma pellucens appears in Croatia is 34. In the Croatian part of Baranja, the species Heptatoma pellucens was recorded in six localities: Branjina, Karanac, Kotlina, Popovac, Sakadaš (Kopački rit Nature Park) and Zmajevac. During this year, 66 specimens were collected, of which 43♂ and 22♀ were collected with liquid oil traps in the localities of Branjina, Karanac, Kotlina and Popovac, while only 1♀ was collected with a canopy trap baited with the attractant 1-octen-3- ol. Although it inhabits different types of habitats, it does not appear anywhere in large numbers. In the Croatian part of Baranja, the species Heptatoma pellucens was collected in localities close to water surfaces. The reasons for the rather small number of records of this species in the Croatian part of Baranja and in Croatia in general are most likely in its morphological similarities to honeybees. Due to those similiarties, there's a possibility it remains unnoticed in various entomological studies that do not include the use of traps and attractants for sampling of the horseflies.

Horseflies, Tabanidae, Diptera, Heptatoma pellucens, Croatia

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