Nine new species of Enithares (Heteroptera: Notonectidae) from New Guinea, with distributional notes on other species and an updated world checklist Author Polhemus, Dan A. text Zootaxa 2020 2020-05-07 4772 1 132 182 journal article 22330 10.11646/zootaxa.4772.1.5 b14b0d0d-cf67-4895-965c-12792c622b21 1175-5326 3814079 B497198A-08CD-4A21-AE04-14390499853B Enithares ripleyana Lansbury Enithares ripleyana Lansbury 1968: 402 . Material examined . INDONESIA , Maluku Utara Prov . , Kab. Maluku Utara : 1 male , Bacan Island , small streamlet with waterfalls and pools, trib. to upper Gambasuli River , Mt. Sabela , 450 m . [vic. 0°42′12′′S , 127°29′54′′E ], 26 September 1985 , CL 2139, D. A . Polhemus & J. T. Polhemus ( USNM , BPBM ); 10 males , 10 females , Halmahera Island , Tobelo Dist. , Kampung Ruko , [~ 20 m . , vic. 1°45′45′′N , 127°57′19′′E ], 11 April 1981 , A . C. Messer and P. M. Taylor ( USNM ; BPBM ); 6 males , 10 females , Tidore Island , Kampung Gurabunga , 700 m . , [vic. 0°40′29′′N , 127°25′16′′E ], 14 July 1981 , A . C. Messer ( USNM , BPBM ); 1 male , Ternate Island , Air Tege Tege , on Mt. Ga- malama, [~ 700 m . , vic. 0°47′28′′N , 127°21′27′′E ], 22 September 1985 , CL 2132, D. A . & J. T. Polhemus ( USNM ) . Discussion . Enithares ripleyana was described from the island of Bacan, and previously known only from there as a putative endemic. The new records presented here demonstrate that the species in fact occurs more widely, also occupying the islands of Halmahera, Ternate and Tidore . It thus appears to be endemic to the northern Molucca islands as a whole. The species is easily recognized by the backward angling apex of the PL in the male genitalia, which is often visible externally without dissection.