The larva of Heliaeschna uninervulata is described and figured for the first time. Its characters mostly fall within the limits of variation of Gynacantha spp. Comparison of the larval characters of H. filostyla, the only other member of the genus for which the larva is known, suggests that it is not congeneric with H. uninervulata….
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…
A new species of Ceylonosticta from the wet zone of Sri Lanka is described and illustrated, namely Ceylonosticta goodalei sp. nov. (Kuruwita-Erathana foot path, Seethagangula, Adam’s Peak, Samanala Nature Reserve, Ratnapura, 6.8196°N, 80.4615°E, 1109 m asl). The species is described from male specimens only and the genital ligula is described and illustrated. Females are as…
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…
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.
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 F stadium larva of both sexes of Tetracanthagyna plagiata is described and figured based on exuviae from which confirmed adult specimens had been reared. Larvae were originally collected in small, slow forest streams in Singapore, and in captivity were fed on local shrimp and small fish species. The known larvae of Tetracanthagyna species, T….