Distribution of Paratetilla bacca. Red dot: type locality, Stelletta bacca Selenka, 1867, American Samoa. Green dots: Indonesian localities where the species was collected recently. Yellow triangles: Records from localities outside Indonesia, Zanzibar, Southwest Madagascar, Seychelles, Thailand, Singapore, Christmas Island, and Philippines. Circled numbers: type localities of synonymized species, 1 Tethya merguiensis Carter, 1873, Mergui Archipelago 2 Tetilla ternatensis Kieschnick, 1896, Ternate Island 3 Tetilla amboinensis Kieschnick, 1898, Ambon Island 4 Tetilla violacea Kieschnick, 1898, Ambon Island 5 Tetilla rubra Kieschnick, 1898, Ambon Island 6 Paratetilla cineriformis Dendy, 1905, Gulf of Manaar, Sri Lanka. 7 Paratetilla eccentrica Row, 1911, Tella Tella Kabira, Red Sea 8 Paratetilla lipotriaena de Laubenfels, 1954, Matalanim, Eastern Pohnpei, Micronesia.