Abstract
Three species of calanoid copepods belonging to the genus Acartiella Sewell, 1914 are redescribed from three estuaries in Thailand. Two species, Acartiella kempi Sewell, 1914 and A. nicolae Dussart, 1985, were collected from the Kraburi Estuary and Prasae Estuary, respectively, representing the first records of these species from Thailand. In addition, A. sinensis Shen and Lee, 1963, collected from the Bangpakong Estuary on the northeast coast of the Gulf of Thailand, is redescribed, as the original description is poor. This genus is zoogeographically unique as it is restricted to tropical and subtropical Asian estuarine waters, and this study increases our understanding of the evolution of estuarine copepods in the Indo-West Pacific.
