Abstract
The horsefly (Diptera: Tabanidae) fauna of Jordan consists of 21 species belonging to seven genera. The present study adds 17 new records to this little-known group of haematophagous insects. Most of the new records were collected from several localities within the Jordan Valley. These new records are Chrysops flavipes Meigen, Atylotus farinosus (Szilády), Dasyrhamphis umbrinus (Meigen), Haematopota coronata Austen, Hybomitra decora (Loew), Hybomitra mendica (Villeneuve), Tabanus accensus Austen, T. albifacies Loew, T. bifarius Loew, T. darimonti Leclercq, T. laetetinctus Becker, T. leleani Austen, T. pallidipes Austen, T. regularis Jaennicke, T. rupinae Austen, T. sufis Jaennicke and Therioplectes tunicatus (Szilády). Tabanus albifacies and T. sufis were the most common species collected by hand nets (19.85% and 17.73%, respectively) and D. umbrinus, Haematopota minuscula Austen, and Haematopota coronata were the least common species (0.12% for each). Zoogeographical analysis of the recorded species showed that 12 species are of Mediterranean origin, four are of Afrotropical origin, two of European origin and at least three species can be considered as endemic to the Middle East.