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 Perittopus asiaticus Zettel, 2001 Material examined. – Dati rain forest: 4 males , 1 female (macropterous), HE1; Temurun Waterfalls: 2 males , 1 female (apterous), KV3; 5 males , 7 females (macropterous), TAD0614 ; 10 males , 10 females , HZL2 . Gunung Raja: 36 males , 25 females (macropterous), HZL4 a; 1 male (apterous), 2 males , 4 females (macropterous), TAD0617 . Durian Perangin: 2 females (macropterous), TAD0618 . Distribution. – Southwestern China , Thailand , and West Malaysia ( Zettel, 2001 ).