First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia Author Zettel, Herbert Author Tran, A. D. text Raffles Bulletin of Zoology 2009 2009-08-31 57 2 279 295 journal article 10.5281/zenodo.5342032 2345-7600 5342032 Hydrometra annamana Hungerford & Evans, 1934 Material examined. – Swamp next to road to Telaga Tujuh: 1 male (brachypterous), 2 females (macropterous), HZL8 . Distribution. – Thailand and Vietnam ( Yang & Zettel, 2005 ). Vitheepradit et al. (2005) recorded H. annamana already from the most-southern part of Thailand ( Satun , Songkhla ) close to the Malaysian border. First record from Malaysia .