<p>Thrips are one of the main agricultural pests of the Hass avocado crop. Because of their herbivory and behavior, thrips damage buds, flowers and fruits, resulted both yield and quality losses. In Veracruz orchards significant damage associated with thrips has been previously detected; however, there are pest species identification, and their population fluctuation stills unknown. The identification of species composition and their seasonality is important to design appropriate management tactics. In this study, thrips populations were surveyed during two flowering cycles in two Hass avocado orchards located in the central mountainous area of the state of Veracruz. For 20 months, collections with the spray drag technique with soap solution using a specialized device were made in buds and inflorescences. A total of 27 species of thrips belonging to 16 genera (ten phytophagous and six predatory) were identified. <i>Frankliniella gardeniae</i> Moulton was the most abundant species in the two orchards with more than 75% of the relative abundance and its peaks were recorded during the flowering and fruit setting season. It is possible that <i>F. gardeniae</i> is related to fruits damage, as it occurs in avocado crops in South America.</p>