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- Lesser Sunda Islands (2)
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A selection of duplicates from the collection of Michel Edmond de Selys Longchamps was found at the Übersee-Museum Bremen/Germany (UMB). Selys determined a lot of Odonata in the UMB collection and sent 80 European and 76 exotic species to Bremen on 23 April, 1875. According to the labels 121 specimens could be assigned to this shipment and eleven specimens must have been sent to UMB in later years. This collection includes two paralectotypes (Progomphus gracilis Hagen inSelys, 1853;Palaemnema nathalia Selys, 1886) and seven syntypes (Rhinocypha trifasciata Selys, 1853; Dysphaea dimidiata limbata Selys, 1859; Argia sordida Hagen inSelys, 1865; Oxyagrion dissidens Selys, 1876; Oxyagrion haematinum Selys, 1876; Oxyagrion pavi-dum Hagen in Selys, 1876; Telagrion longum Selys, 1876). In addition, a male specimen of Euphaea tricolor subcostalis Selys, 1873 might also belong to the original syntype series. Altogether three specimens with labeled nomina nuda(Diplax catharina Selys, Diplax fausta Selys, Dythemis bilineata Hagen) and two labeled with manuscript names (Diplax marcellina Selys, Perithemis ovate Bates) are in this collection.
Specimens of Neurothemis disparilis Kirby, 1889, N. fluctuans (Fabricius, 1793), N. fulvia (Drury, 1773), N. ramburii (Brauer, 1866), N. stigmatizans (Fabricius, 1775) and N. terminata Ris, 1911, including their subspecies, were studied with the main focus on the morphology of the vesica spermalis, wing maculation, wing venation, abdominal markings and vulvar scales. The results were compared with species descriptions and directly with type specimens where possible. The vesica spermalis, especially the medial process, is useful at least in separating species groups and supports the traditional differentiation methods using wing maculation and venation. The use of other characters in accessing specific status, coupled with known distribution patterns, is discussed. The following taxonomic changes are proposed: Neurothemis manadensis (Boisduval, 1835) stat. nov., Neurothemis papuensis (Lieftinck, 1942) stat. nov. and Neurothemis taiwanensis sp. nov. is described (27.5.1998, Kenting, Pingtung County/Taiwan, L. M. Juang leg.; holotype is deposited at Taiwan Forestry Research Institute, Taipeh, Taiwan). The type of Polyneura palliata Rambur, 1842 was rediscovered at MNHN and designated as lectotype; a lectotype for Neurothemis nicobarica Brauer, 1867 housed at NHMW is designated. The holotype of Neurothemis incerta Brauer, 1867 was rediscovered and synonymized with N. ramburii.
The survey is based on specimens held at Museums in Australia, Belgium and Germany. Altogether 487 specimens of 31 species from Timor were examined. These include: a recent collection from TimorLeste of 148 specimens (25 species) at the Australian Museum Sydney, an historic collection from West Timor consisting of 338 specimens (20 species) of the excollection Eugène Le Moult, stored at the Institut Royal des Sciences Naturelles de Belgique in Brussels, and a single specimen from West Timor of the Coll. Ris stored at the Senckenberg Naturmuseum Frankfurt, Germany. The following nine species are reported from Timor for the first time: Agriocnemis pygmaea, Austroallagma sagittiferum, Ischnura heterosticta, Xiphiagrion cyanomelas, Crocothemis servilia, Neurothemis ramburii, Orthetrum pruinosum cf. schneideri, Potamarcha congener and Zyxomma obtusum. The female of Anax georgius is described and illustrated. An illustrated key to the Anax species of the Lesser Sunda Islands is given and specimens from the Lesser Sunda Islands formerly identified as Anax gibbosulus are considered to be Anax panybeus. Some characters of the Orthetrum pruinosum taxa group of species, Tramea stenoloba and female Zyxomma obtusum are discussed. Figures of the male appendages and genital ligulae of Austroallagma sagittiferum, Aciagrion fragile and Xiphiagrion cyanomelas are provided, as well as figures of the male secondary genitalia, appendages and the penis of Trithemis lilacina and the male appendages of Epophthalmia vittigera. A preliminary checklist for Timor including 36 species is given.
We present an annotated list of 28 Odonata species (19 Anisoptera, 9 Zygoptera) from Timor Island based on 464 records via photographs and 56 specimens held in collections at the Museum and Art Gallery of the Northern Territory, Darwin, Australia and the Museum Wiesbaden, Germany. Additionally 43 records of eight species (7 Anisoptera, 1 Zygoptera) from Rote Island and one record from Romang were reported. Most Timorese records are from Oecusse Special Administrative Region/Timor-Leste, a region which to date was "terra incognita". Further records from Timor-Leste are predominantly from Lautem Municipality and Baucau Municipality as well as from the Indonesian Kupang Regency. Four species are new records for Timor Island increasing the checklist to 40 species: Brachythemis contaminata (Fabricius, 1793), Tholymis tillarga (Fabricius, 1798), Gynacantha sp. cf. dobsoni Fraser, 1951and Ischnura aurora (Brauer, 1865). We provide the first photographs of live Nososticta impercepta Seehausen & Theischinger, 2017 as well as some descriptions of habitats in Oecusse. At Rote Island five species were reported for the first time as well: Brachythemis contaminata, Crocothemis servilia (Drury, 1773), Rhyothemis phyllis (Sulzer, 1776), Macrodiplax cora (Brauer, 1867) and Potamarcha congener (Rambur, 1842). The record of Orthetrum testaceum (Burmeister, 1839) from Romang Island appears to be the first Odonata documented from this island. The status of Rhyothemis phyllis is discussed with regard to the ssp. ixias Lieftinck, 1953 from the islands of Sumba and Flores. We provide distribution maps of each species as well as suggestions for targeted field research in the future. All historical records of Nososticta selysii (Förster, 1896) from Timor are now assigned to Nososticta impercepta.