Cardenas R. E. auteur aut IRD Buestan J. auteur aut IRD Dangles Olivier auteur aut IRD text journalArticle eng text/pdf reformatted digital access Worldwide information about Tabanidae is biased toward taxonomical research, which has been the main source of diversity data for this group of flies. In Ecuador, studies on horse flies have been irregular since the first descriptions of three Andean specimens in 1848. Catalogues, checklists and collections in national museums demonstrate that despite its size, Ecuador is at present the richest country in number of tabanids species in the Neotropics after Brazil, Colombia and Mexico, and has one of the highest numbers of species per unit area. The tabanofauna is predominantly shared with Colombia (62.6%), Peru (47%), Brazil (35.9%), Panama (35.4%), and Venezuela (30.3%) that have biogeographic areas in common with Ecuador. Endemism rate of this group is around 12.6%, with Diachlorus, Dicladocera, Esenbeckia, Eristalotabanus (monotypic), and Leucotabanus genera as the most representatives. We add new records of Tabanidae for the country. The genus Hemichrysops was recorded for first time. The number of species in Ecuador now totals 198. A catalogue of all Ecuadorian species is compiled with a localities-gazetteer. We also present and discuss for the first time, the distribution of well known horse flies species (Chrysops varians var. tardus, Dicladocera macula and Fidena rhinophora) using georeferenced localities and niche modelling analyses. specialized Andes Biogeography Neotropical Region Niche modelling Tabanomorpha 080 45 4 511-528 2009 0037-9271 https://www.documentation.ird.fr/hor/fdi:010049431 10.1080/00379271.2009.10697633 0037-9271 [F A010050088] https://www.documentation.ird.fr/hor/fdi:010049431 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers12-09/010049431.pdf IRD - Base Horizon / Pleins textes 2010-05-03 2023-03-03 fdi:010049431 fre