THE TREPOBATINAE (HETEROPTERA, GERRIDAE) OF NEW-GUINEA AND SURROUNDING REGIONS, WITH A REVIEW OF THE WORLD FAUNA .3. TRIBE TREPOBATINI

The small waterstriders of the subfamily Trepobatinae have radiated ex tensively on New Guinea and surrounding archipelagos. The present cont ribution is the third in a series of reports dealing with this endemic fauna and reviews the tribe Trepobatini, proposed in Part 1 of this s eries to hold the genera Trepobates Uhler, type genus, plus Cryptobate s Esaki, Cryptobatoides J. Polhemus, Gnomobates gen. n., Halobatopsis Bianchi, Ovatametra Kenaga, Telmatometra Bergroth, Telmatometroides J. Polhemus, and Trepobatoides Hungerford and Matsuda. A key to genera i s provided, followed by synonymies, diagnoses and discussion of the co nstituent genera, and a revision of the genus Cryptobates, one of the two Old World genera in the tribe. The following new taxa are proposed within Trepobatini: Cryptobates johorensis sp. n. from Peninsular (= West) Malaysia, C. rufus sp. n. from Singapore and West Malaysia, and Gnomobates gen, n., including only the type species Cryptobates kuiter ti Hungerford and Matsuda from India, Myanmar (= Burma) and Thailand ( as Gnomobates kuiterti, comb. n.). Habitat and distributional data are given for these taxa, accompanied by a key, figures of key characters and distribution maps.