Contribution to the knowledge of Clavigeritae (Coleoptera: Staphylinidae: Pselaphinae) from Fiji and Vanuatu, with the catalogue of Clavigeritae of Oceania Author Besuchet, Claude Muséum d’histoire naturelle, Route de Malagnou, CH- 1211 Genève 6, Switzerland Author Hlaváč, Peter Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Kamýcká 1176, CZ- 165 21 Praha 6, Czech Republic; e-mail: phlavac @ stonline. sk text Acta Entomologica Musei Nationalis Pragae 2011 2011-12-09 51 2 517 528 journal article 4622 10.5281/zenodo.5328923 82c0e92c-2ca4-474f-a228-259ad1adb559 0374-1036 5328923 Clavister deplanatus sp. nov. ( Figs. 1 , 5 ) Type material (4 JJ). HOLOTYPE : J, FIJI : TAVEUNI: L. Tagimaucia track, 400 m , 17.vii.1987 , leg. G. Monteith & D. Cook. With Ant Plant: Squamellaria sp. ( QMBA ). PARATYPES : 1 J, the same data as holotype but collected on 17.vii. 1987 , 700 m ( QMBA ); 2 JJ, FIJI : VANUA LEVU: Savusavu Saddle, 500 m , 26.x.1977 , leg. G. Kuschel. On Hydnophytum with Philidris nagasau (Mann, 1921) (MHNG) . Description. Body ( Fig. 1 ) about 1.7 mm long, maximum width of elytra about 1.2 mm . Head (length 0.40 mm , width 0,61 mm), ventrally about 1.5 times as wide as long, dorsal part of eyes with about 17 facets, ventral part of eyes with about 7 facets. Antennae with terminal antennomere 0.28 mm long. Pronotum 2.75 times as long as dorsally visible part of head and 2.5 times as wide as long. Elytra about 2.35 times wider than long at suture, with short oblique striae meeting sutural corners at base.Abdomen with only the composite tergite visible dorsaly, with large basal depression reaching apical third of composite tergite; composite tergite bearing four bunches of trichomes ( Fig. 1 .) as follows: first bunch of trichomes narrow, situated on extension of pleurite I, another narrow bunch of trichomes is located nearby first one, large triangular bunch of trichomes in debth and perpendicular bunch of trichomes located at posterior margin of composite tergite. Mesotibiae with minuscule, but sharp and well-defined spine located in apical fourth. Aedeagus as in Fig. 5 , 0.48 mm long. Sexual dimorphism. Female unknown. Etymology. The name refers to flat body of the species. Host ant. Philidris nagasau (Mann, 1921) . Distribution. Fiji , Taveuni and Vanua Levu Islands.