Leptanilla hypodracos sp. n., a new species of the cryptic ant genus Leptanilla (Hymenoptera, Formicidae) from Singapore, with new distribution data and an updated key to Oriental Leptanilla species

A new species of the cryptic and rarely collected ant genus Leptanilla is described. Leptanilla hypodracos sp. n. is the first Leptanilla recorded from Singapore in over a century since Leptanilla havilandi Forel, 1901 and represents the fourth species of Leptanilla known from the Malay Peninsula. An updated key to the Leptanilla of the Oriental region is presented. Taxonomic comparisons between Leptanilla hypodracos sp. n. and four morphologically similar species are provided with particular attention given to Leptanilla clypeata Yamane & Ito, 2001, for which new measurements and indices are presented. The first report is presented for the Leptanillinae subfamily from the southeastern part of China with a worker of the genus Leptanilla collected in Hong Kong. Finally, the potential of subterranean bait to collect Leptanilla species is discussed.