The Trepobatinae (Gerridae) of New Guinea and surrounding regions, with a review of the World fauna. Part 5. Taxonomic and distributional addenda

The small waterstriders of the subfamily Trepobatinae have radiated extensi vely on New Guinea and surrounding archipelagos. The present contribution i s the fifth in a series of reports dealing with this endemic fauna, and pre sents taxonomic and distributional addenda to our previous tribal level tre atments. The following new species are described: Ciliometra setosa from so uthern Papua New Guinea, Ciliometra waigeo from Waigeo and Batanta Islands, Ciliometra minajerwi from southern Irian Jaya, Stygiobates iweka from sout hern Irian Jaya, Stygiobates mubi from southern Papua New Guinea, Stygiobat es rajana from Waigeo and Gam Islands, Calyptobates kopi from southern Iria n Jaya, and Calyptobates kamoro from southern Irian Jaya. The previously un known male of Iobates somare Polhemus & Polhemus is also described, and new distribution records are provided for the following taxa based on recent c ollections in northern New Guinea and the Raja Ampat Islands: Iobates affin is (Esaki), Metrobatopsis flavonotatus Esaki, Stygiobates iriana Polhemus & Polhemus, Pseudohalobates inobonto Polhemus & Polhemus, Stenobates austral icus Polhemus & Polhemus, Stenobates fakfak Polhemus & Polhemus, Stenobates kamojo Polhemus & Polhemus and Rheumatometroides sele Polhemus & Polhemus. New distribution records are also provided for the following species occur ring outside the New Guinea region, based on recent collections in Southeas t Asia: Calyptobates samarinda Polhemus & Polhemus from Sumba, and Naboande lus signatus Distant from southern Vietnam. Revised keys are presented for the New Guinea species of Ciliometra, Stygiobates, lobates and Cryptobates, accompanied by updated distribution maps and illustrations of key characte rs.