Habitats, Onchidium melakense A type locality, Peninsular Malaysia, Kuala Sepatang, old forest with tall Rhizophora trees, high in the tidal zone (ferns), in educational mangrove preserve (st 258) B Sumatra, Pulau Sinaboi, mangrove forest with medium Rhizophora and Avicennia trees, dead logs, hard mud (st 73) C old log with crevices which O. melakense typically favors (st 73) D mangrove pit viper (arrow) resting by a log (st 73).

  Part of: Dayrat B, Goulding TC, Khalil M, Apte D, Tan SH (2019) A new species and new records of Onchidium slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia. ZooKeys 892: 27-57. https://doi.org/10.3897/zookeys.892.39524