A faunistic study and taxonomic account of species of pygmy grasshoppers (Orthoptera: Tetrigidae) from Singapore's last freshwater swamp forest

We surveyed the pygmy grasshoppers (Tetrigidae) of Nee Soon Swamp Forest (NSSF), the last substantial freshwater swamp habitat in Singapore, and found nine species from seven genera, including new locality records for Potua coronata Bolívar, 1887 and Thoradonta nodulosa (Stål, 1861). Overall, four subfamilies were represented: Cladonotinae, Metrodorinae, Tetriginae, and Scelimeninae. Here, we document the diversity and describe the intra-specific variation in Loxilobus insidiosus (Bolívar, 1887), Thoradonta nodulosa (Stål, 1861), and Coptotettix spp. as well as report natural history observations of these species related to their behavior in the semi-aquatic environment). We also provide a key to the species of Tetrigidae from NSSF.