Odonata briefly observed on the islands of Bali and Lombok, Lesser Sundas, Indonesia, in the late February 2014

In the second half of February 2014, Odonata were searched for nine days on Bali and four days on Lombok, the western Lesser Sundas, Indonesia. One species, Orthetrum chrysis has been for the first time recorded for Bali and six species, Nososticta emphyla, Idionyx murcia, Brachydiplax chalybea, Agrionoptera insignis, Neurothemis ramburii, Rhyothemis phyllis have been for the first time recorded for Lombok. The previous literature concerning the two islands is analysed. To the moment, 55 Odonata species (3 unidentified) are known for Bali and 39 for Lombok, although the actual faunas of both islands are supposed to be equally rich, and further studies on Lombok are necessary. Odonata faunas of Bali and Lombok mirror each other in respect of high shares, 29 and 23%, of Odonata species ranging to the west and east of the two islands, respectively. Efficiency of Lombok Strait as a biogeographical boundary was estimated as high as 0.6, so Wallace Line is of importance for Odonata. Some diagnostic characters of N. emphyla, N. ramburii, R. phyllis phyllis and Procordulia sambawana and a taxonomical situation around Prodasineura autumnalis and P. humeralis, which is not justified biogeographically, are discussed. Short notes on habitats and assemblages of Odonata are added.