New records of Odonata from the eastern Lesser Sunda Islands of Timor, Semau, Rote, and Alor, with discovery of Hemicordulia eduardi (Odonata: Corduliidae)

Eleven species of Odonata are reported for the first time from Timor and Semau Islands, 13 new records are reported for Rote Island and four new records for Alor Island. These records increase the checklists to 51 species for Timor (thereof 45 from TimorLeste), 11 for Semau, 23 for Rote and 13 for Alor. An annotated listing is provided for these four islands. Furthermore three species were rediscovered at Timor: Indolestes lafaeci Seehausen, 2017 for the first time since the type series collected in 1929, also the first photographs of living individuals and notes about the habitat are provided; Diplacodes haematodes (Burmeister, 1839) for the first time since 1935 and Tramea loewii Brauer, 1866 for the first time since an unspecific record published by Lieftinck (1953). The identification of Hemicordulia eduardi Lieftinck, 1953, formerly supposed to be an endemic from Sumba Island, is discussed with reference to the holotype male. Also notes about the habitat and behaviour are given. Five taxa of the Rhyothemis phyllis (Sulzer, 1776) group were shortly discussed with respect to the individuals from Timor which are provisionally assigned to ssp. ixias Lieftinck, 1953. Illustrations of the face, labium and wings of the nominate subspecies as well as of ssp. ixias, ssp. obscura (Brauer, 1868), ssp. snelleni (Selys, 1878), and ssp. chloe (Kirby, 1894) are provided.