Chlorogomphus manau sp. nov. (holotype ♂: Borneo, Sarawak, Kapit Division, Hose Mountains, 15 April 2011, RMNH) from Malaysia is described from the male and compared with other regional Chlorogomphus species.
A review of the Teinobasis of Sundaland, with the description of Teinobasis cryptica sp. nov. from Malaysia (Odonata: Coenagrionidae)
Teinobasis cryptica sp. nov. (holotype ♂: Borneo, Sarawak, Bahagian Samarahan, Kota Samarahan, old UNIMAS campus, disturbed peatswamp forest, 25 ii 2008, RMNH) from Malaysia is described from both sexes and compared with other Teinobasis species known to occur in Malaysia. The members of the genus known from Sundaland are reviewed. Records of T. ruficollis from…
The larva of Podolestes orientalis from West Malaysia, with notes on its habitat and biology (Odonata: Megapodagrionidae)
The larva of the south-east Asian megapodagrionid, Podolestes orientalis, is described and figured. Specimens were collected from shallow forest pools lined with large dead leaves in secondary lowland forest. Final and earlier stadium larvae were found concentrated around the edges of pools in very shallow water. Larvae sometimes perched in exposed situations, just below the…
Two new species of Chalybeothemis from Malaysia, with a redefinition of the genus (Odonata: Libellulidae)
Chalybeothemis chini sp. nov. from Pahang, Peninsular Malaysia, and C. pruinosa sp. nov. from Sarawak, Malaysian Borneo, are described from the male sex. The new species necessitate some redefinition of the previously monotypic genus, which is provided. The quiescent penis of Chalybeothemis is illustrated for the first time. Differences between C. chini, C. fluviatilis and…
Critical species of Odonata in Malaysia, Indonesia, Singapore and Brunei
Malaysia, Brunei and the Indonesian archipelago comprise a total land area of ca 1.84 million km2 including ca 13,000 islands, lying entirely within the tropics. The region is bisected by Wallace’s line and supports a rich Oriental fauna to the west (Sundaland) and mainly Australian elements to the east. Taxonomic studies throughout the region were…
Gynacantha corbeti spec. nov., a new dragonfly from West Malaysia (Anisoptera: Aeschnidae)
This paper is dedicated to Philip S. Corbet on the occasion of his 70th birthday.
Out of Australia: the Argiolestidae reveal the Melanesian Arc System and East Papua Composite Terrane as possible ancient dispersal routes to the Indo-Australian Archipelago (Odonata: Argiolestidae)
Information on the origin of distribution patterns shown by freshwater invertebrates in the Indo-Australian Archipelago is poor. Here we present a molecular based hypothesis of the phylogenetic relationships of Argiolestidae, a family of damselflies found throughout the tropical parts of the Eastern Hemisphere. We use this to address the following questions: (1) did Argiolestidae colonize…
A description of the larva of Heliaeschna idae Brauer from Borneo, with a supplementary note on the larva of H. univervulata Martin (Odonata: Aeshnidae)
The final instar larva of Heliaeschna idae Brauer is described and figured for the first time based on the exuvia from an advanced female larva collected in Sarawak, Borneo (East Malaysia). It is compared with the known larvae of the genus and is concluded to be most closely allied to Heliaeschna simplicia Karsch, with which…
Remarks on the taxonomy of Megapodagrionidae with emphasis on the larval gills (Odonata)
A list of genera presently included in Megapodagrionidae and Pseudolestidae is provided, together with information on species for which the larva has been described. Based on the shape of the gills, the genera for which the larva is known can be arranged into four groups: (1) species with inflated sack-like gills with a terminal filament;…
Libellago orri sp. nov. from northern Borneo (Odonata: Chlorocyphidae)
Libellago orri sp. nov. (holotype ♂: Borneo, Sarawak, Bahagian Bintulu, Samarakan, Sg. Gagak, 06 iii 2006, to be deposited in BMNH) from Malaysian Borneo is described from the male sex and compared with L. hyalina, which co-occurs at the same sites. Females of the two species cannot be reliably separated at present.