S. Mahunka szerk.: Folia Entomologica Hungarica 61. (Budapest, 2000)

1995, when the collected sample contained the same number of males and females. Equal number of males and females was also determined in the sample of Tabanus spodopterus collected at the station in Bariae Draga on 28th July 1995. In other samples females were represented in much larger numbers than males. The greatest activity of the males collected during the research was recorded when the air temperature was 24°C. This is connected with the fact that most specimens were collected in the morning or in late afternoon. Males were in most cases collected in habitats covered with woods and in the immediate vicinity of rivers (Sava, Drava, Zrmanja and Cetina), or lakes (Borovik, Baaeinsko jezero). The most probable reason for the males to stay in their habitats close to the water is the fact that these are the places where females lay their eggs after mating and feeding, where the development process of horse-flies takes place, and where the males are waiting for virgin females to emerge (Watanabe 1968, Nash and Ross 1977). The entire collected sample includes males of 16 species bound to the Mediterranean part of Croatia and males of 17 species bound to the continental part of the country. There are also 7 species that were attached to both parts of the country. The research has shown that boreal-Eurasian species Chrysops viduatus, Tabanus autumnalis, Tabanus bromius and Tabanus glaucopis also appear in the Mediterranean part of Croatia and that mediterranean species Atylotus loewianus, Tabanus tergestinus and Philipomyia graeca were also collected in the continental part of the country. REFERENCES Chvála, M. (1988): Family Tabanidae. — In: Soós A. (ed.): Catalogue of Palearctic Diptera, Athericidae-Asilidae. — Akadémiai Kiadó and Elsevier Publication, Budapest and Amsterdam, pp. 97-171. Chvála, M., Lyneborg, L. and Moucha, J. (1972): The horse flies of Europe (Diptera,Tabanidae). — Entomological Society of Copenhagen, Copenhagen, 499 pp. Coe, R. L. (1958): Diptera taken in Jugoslavia from May to July, 1955 with localities and notes. — Bull. Mus. Hist, nat., Paris, ser B. 12: 181-206. Coe, R. L. (1960): A further collection of Diptera from Jugoslavia, with localities and notes. — Bull. Mus. Hist, nat., Paris, ser B. 16: 43-67. Downes, J. A. (1958): The feeding habits of biting flies and their significance in classification. — Ann. Rev. Entomol. 3: 249-266. Downes, J. A. (1969): The swarming and mating flight of Diptera. —,4/2/2. Rev. Entomol. 14: 271-298. Foil, L. D. (1989): Tabanids as vectors of disease agents. — Parasit. Today 5: 88-96. Foil, L. D., Leprince, D. J. and Byford, R. L. (1991): Survival and dispersal of horse-flies (Diptera: Tabanidae) feeding on cattle sprayed with a sublethal dose of fenvalerate. — J. med. Entomol. 28: 663-667. Gaugler, R. and Schutz, S. (1989): Environmental influences on hovering behavior of Tabanus nigrovittatus and T. conterminus (DipteraTabanidae). —J. Insect Behav. 2: 775-786. Gilbert, F. S. ( 1984): Thermoregulation and the structure of swarms in Syrphus ribesii (Syrphidae). — Oikos 42: 249-255. Inaoka, T. (1992): Reproductive life histories of hematophagus Tabanids (Diptera: Tabanidae) in Hokkaido with special reference to their autogeny. — Jap. J. sanit. Zool. 43: 177-193. Krcmar, S. and Leclercq, M. (1997): Horse Flies (Diptera: Tabanidae) on the Lower Part of the Neretva River in Southern Croatia. — Bull. Annls Soc. r. ent. Belg. 133: 261-21A. Krcmar, S., Majer, J., Mikuska, J. and Durbesias, P. (1996): Index of the Tabanidae (Diptera) in Croatia. 5 supplementum. — Nat. Croat. 1: 1-25. Leclercq, M. (1960): Tabanidae (Diptera) de Yugoslavie II. — Fragm. balcan. 3: 183-188.