Thrips (Insecta: Thysanoptera) species infesting garlic (batanes red) in selected farms in batanes, Philippines

Abstract

The study aimed to determine the species of thrips infesting garlic (Batanes Red) in the Department of Agriculture–Batanes Experiment Station (DA-BES) in Ihubok 1, Basco; DA-BES Dibtung, Radiwan, Ivana; and in the Calderon Farm in Radiwan, Ivana, Batanes. Sampling was done in February 2020. A total of 950 adult female thrips were collected from all study sites. The majority of the thrips were collected from DA-BES Farm in Ihubok 1, Basco with 89.89%, followed by the Calderon Farm in Ridawan, Ivana with 5.16%, and DA-BES Farm in Dibtung, Ridawan, Ivana with 4.95%. Thrips were represented by two terebrantian species, namely: Thrips tabaci Lindeman (Thripidae) with 97.37%, Anaphothrips sudanensis Trybom (Thripidae) with 2.32%, and a tubuliferan species Haplothrips gowdeyi (Franklin) (Phlaeothripidae) with 0.31%. T. tabaci was the dominant species in all study sites. A. sudanensis was found in all the study sites but in low number, while H. gowdeyi was present in two DA-BES study sites but absent in the Calderon Farm. This is the first report of A. sudanensis and H. gowdeyi infesting garlic in the Philippines.