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 Halobates (sensu stricto) sexualis Distant, 1903 Material examined. – Pantai Rhu: 3 males , 4 females (apterous), KV4. Distribution. – Malay Peninsula and Sri Lanka (Andersen & Cheng, 2004).