Three new Drepanosticta species from Sri Lanka (Zygoptera: Platystictidae)

D. mojca sp. n. (holotype <J: 10km NEE of Deniyaya; Matara distr.; Southern prov.; N 6.36°, E 80.46°; 02-V-2003; to be deposited at Sri Lanka National Museum, Colombo), D. bine sp. n. (holotype 3: Opanayake, Ratnapura distr.; Sabaragamuwa prov.; N 6,62°, E 80.66°; 13-X-1970; deposited at National Museum of Natural History, Smithsonian Institution, Washington, USA) and D. anamia sp. n. (holotype 3: Katugas Falls near Ratnapura; Ratnapura distr.; Sabaragamuwa prov.; N 6.68°, E 80.41°; 04-V-2003; to be deposited at Sri Lanka National Museum, Colombo), are described. Their currently known distribution, phenology, ecology and threat status are presented and discussed. The remarkable Drepanosticta diversity in Sri Lanka makes the island a globally important Platystictidae hotspot.