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Based on the study on the composition of the tabanid fauna of the Sredna Gora Mountains and the summarized reference data 54 species and 2 subspecies of 10 genera have been identified: Silvius (1 species), Chrysops (4 species), Atylotus (4 species), Therioplectes (2 species and 1 subspecies), Hybomitra (5 species), Tabanus (23 species and 1 subspecies), Heptatoma (1 species), Haematopota (10 species), Dasyrhamphis (2 species) and Philipomyia (2 species). For the first time, data on the tabanid fauna of the Ihtimanska and Sashtinska Sredna Gora Mountains have been reported. For the Ihtimanska Sredna Gora Mountains 17 species of 4 genera have been identified: Atylotus (1 species), Tabanus (12 species), Haematopota (2 species) and Philipomyia (2 species), and for Sashtinska - 20 species of 6 genera: Chrysops (2 species), Atylotus (2 species), Hybomitra (1 species), Tabanus (12 species), Haematopota (2 species), and Philipomyia (1 species). The species Atylotus latistriatus Brauer in Br. & Bergenstamm, 1880, Tabanus spodopterus Meigen, 1820 and Philipomyia aprica (Meigen, 1820), registered in the Ihtimanska and the Sashtinska Sredna Gora Mountains have been reported for the first time for the fauna of the Sredna Gora Mountains. [ABSTRACT FROM AUTHOR]

A study was conducted on the dynamics of tabanids daily activity in the Central Balkan Mountains in the 2011-2013 period. Tabanids have been found to fly 11 hours a day, with a peak in activity around 11:00. Their mass activation is in the temperature range 18-23°C and at 26°C maximum activity has been reported. In the present study a new, minimum temperature threshold for activation of T. quatuornotatus Mg. in Bulgaria was registered (13°C). [ABSTRACT FROM AUTHOR]

The study was conducted in the Central Balkan Mountains in the 2010-2013 periods. On the basis of new and literature data it was summarized that the tabanid fauna in the region is represented by 41 species of 10 genera. The species Tabanus leleani Austen, 1920 is reported for the first time for the fauna of Bulgaria. The phenological features of 31 species of tabanids registered during the study in the region have been analyzed. The terms of activity of the most common tabanid species have been confirmed. The flight period of Tabanus sudeticus Zeller, 1842 in Bulgaria (from the middle of June to the middle of August) are marked. [ABSTRACT FROM AUTHOR]

The seasonal activity of the tabanids (Diptera: Tabanidae) was studied from May to September (2010- 2011) in three localities on the territory of the Central Balkan Mountains. A total of 2232 specimens from 25 tabanid species and 8 genera were collected and processed. The first horse flies emerge in the first half of May and the last specimens were collected until mid-September. The tabanids reached their highest peak abundance in the first half of July. The most abundant species of the tabanid assemblages in the Central Balkan Mountains were Tabanus tergestinus Egg. (56.73 %), Tabanus bromius L. (12.71 %) and Haematopota pluvialis L. (8.87 %). The largest number of specimens of T. tergestinus was collected during the peak of the seasonal abundance of horse flies on the territory of the Central Balkan Mountains. [ABSTRACT FROM AUTHOR]

The aim of the present study was to explore the seasonal activity of tabanids on the territory of the Chirpan Eminences, in Stara Zagora region, Bulgaria. The study was carried out during the flight period (May - September, 2010 - 2011). A total of 1034 specimens of tabanids from 23 species and 8 genera were collected and identified. The horse flies began flying during the second half of May and its flight period lasted until mid - September. The peak of seasonal abundance was observed during the first half of July. The most abundant species in the horse flies assemblages on the Chirpan Eminences were Tabanus quaturnotatus (35.30%), Tabanus tergestinus (28.05%) and Philipomyia graeca (10.93%). The largest number of specimens of T. tergestinus was collected during the peak of seasonal abundance of horse flies on the territory of the Chirpan Eminences. [ABSTRACT FROM AUTHOR]

Generalized data on the diversity of tabanid species in Surnena Sredna Gora is presented for the first time. Published and original data confirms the existence of 48 species from 10 genera: Silvius (1 species), Chrysops (3 species), Atylotus (3 species), Hybomitra (5 species), Tabanus (21 species), Therioplectes (1 species), Heptatoma (1 species), Haematopota (10 species), Dasyrhamphis (2 species) and Philipomyia (1 species). Twenty-nine localities were registered, 13 of which were reported for the first time. Information about the precise localities, number and sex of captured specimens, as well as the dates of their collection is presented for 24 species, collected in the period of year 2002 to 2005. The identified diversity of species represents 62.34 % of the current Bulgarian tabanid fauna (77 species). From a zoogeographical point of view, the predominant species are the Mediterranean ones. [ABSTRACT FROM AUTHOR]

A study was carried out on tabanids fauna of the Sakar Mountain, Bulgaria in 2005 and 2008. As a result of the study a total of 550 ? and 30 ? specimens of the Tabanidae family have been collected and processed. They belong to 19 species of 6 genera as follows: Chrysops (2 species), Hybomitra (1 species), Tabanus (9 species), Haematopota (3 species), Dasyrhamphis (2 species) and Philipomyia (2 species). Twelve of the established species are reported for the first time for the Sakar Mountain fauna. Zoogeographically Mediterranean faunistic elements predominate in the studied region (63.16 %). [ABSTRACT FROM AUTHOR]