Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Viii. Leptopodomorpha, Families Saldidae, Leptopodidae, And Omaniidae Author Polhemus, John T. Author Polhemus, Dan A. text Raffles Bulletin of Zoology 2012 2012-08-31 60 2 329 341 journal article 10.5281/zenodo.5348097 2345-7600 5348097 Rupisalda thailandana ( Cobben, 1986 ) , new combination ( Figs. 17 , 18 ) Saldula thailandana Cobben, 1986: 226 Material examined. — MALAYSIA , Selangor : 1 male , Gombock River below Genting Highlands , 750’, 10 Mar.1983 , coll. R . T . Schuh & B. Massie ( JTPC ) . Penang : 1 female , near Georgetown , 16 Jan.1983 , coll. H. C. Chapman ( JTPC ) . Kelantan : 4 males , 3 females , Pergau River at upper bridge, 24 km W of Jeli , CL 2082, 20 Aug.1985 , coll. J. T . & D. A. Polhemus. Johor : 4 males , 2 females , Johor , Kota Tinggi Waterfall, 16 km NW of Kota Tinggi , CL 2056, 13 Aug.1985 , CL 2056, coll. J. T . & D. A. Polhemus ( JTPC ) . Extralimital material examined. — THAILAND , Nakhon Nayok Prov . : 1 female , S. Banna , Nakhon , 108 m , 5–10 May 1958 , coll. T . C. Maa ( paratype , JTPC ) . HONG KONG , New Territories : 1 male , 1 female , Great Falls , Kadoorie Experimental Farm , 23 Nov.1985 , CL 2209, coll. D. A. & J. T . Polhemus ( JTPC ) . Fig. 16. Saldoida armata , lateral view of head and thorax (after Drake, 1961 ). Diagnosis. — Male length 3.50–3.80, maximum width (across hemelytra) 1.35–1.40; female length 3.90–4.00, maximum width (across hemelytra) 1.45–1.50. General colouration black, sparingly marked with pale yellow and white ( Fig. 17 ). Head shining black, eyes and ocelli red, vertex with a creamy white spot present to either side of midline in space between eyes and ocelli, antennae with segment I creamy white, segments II and III black, segment IV brown at extreme base and on distal 1/4, central section white; pronotum and scutellum uniformly shining black; hemelytra black, outer margin of corium broadly creamy white basally, this marginal pale colouration narrowing distally, basal section of inner corium dark pruinose grey, bearing 3 white patches, posterior section of inner corium dull black, bearing 2 small white patches near claval apex and another much larger white patch posterolaterally ( Fig. 18 ), clavus dull black, bearing 2 small white patches at anterior and posterior extremities, membrane blackish fumate, each wing cell bearing 2 pale areas; legs pale yellowish-white, blotched with dark brown; thoracic venter shining black, abdominal venter dark brown with intersegmental membranes contrastingly pale. Distribution. — Originally described from Nakhon Nayok Province in southern Thailand ( Cobben, 1986 ), with subsequent records from Hong Kong , Burma , Thailand , Vietnam , and Peninsular Malaysia provided by J. Polhemus & D. Polhemus (1999) . We provide the first specific records for the Malaysian states of Selangor , Penang , Kelantan , and Johor . Discussion. — This species was previously known from West Malaysia . Although originally described in the genus Saldula ( Cobben, 1986 ) , the lack of a secondary hypocostal ridge on the ventral hemelytron, coupled with its general habitus and preference for rheocrenes, places this species in the genus Rupisalda .