Austrocyphon quinquespinosus, sp. n. (Figs. 102–106) Type material. NSW: Holotype: ♂, NSW 4K N Perisher Pipers Creek 6/1/06, C.H.S.Watts. Paratypes: 3 ♂, same data as holotype; 3♂, 1♂ in poor condition, NSW: Leatherbarrel Creek Alpine Way 7/1/06 on Prostanthera flws, C.H.S.Watts (all SAMA). 1♂, NSW: Geehi, 25.2.69 (MV). Additional material studied. 1 probable ♀, NSW: Leatherbarrel Creek Alpine Way 7/1/06 on Prostanthera flws, C.H.S.Watts (SAMA). Habitus. BL 2.3–2.7 mm, BL/BW ~1.6. Regularly oval. Colour varies from light brown to moderately dark specimens with diffuse lighter edges of pronotum and parts of elytra to almost black individuals. Male. The long apodemes and the ventrolateral portion of T9 well sclerotized, plate reduced. Each side ends in a gently upcurved sharp spine which is straight in dorsal view. S9 is a long basally and caudally pointed unpaired sclerite. Two pale membranous lobes with a few apical setae in the basal third of S9. Penis slender, widest near midlength. Sclerite frame of pala very narrow, arch formed by the fused parameroids also narrow, not flanged. Trigonium slender, pointed, its pointed end extending under the claw-shaped centema. In side view an unequal double tip appears. Tegmen a U-shaped loop terminating in two long and thin pointed processes, each with a triangular anteriorly pointing appendage. Female. Probable specimen not distinctive. Note. The double tip of the trigonium and the recurrent appendage of the parameres suggest A. stylatus is the closest relative. Etymology. From the Latin quinquespinosus, with five spines: the style, plus the acute tips of parameres and T9.

Published as part of Zwick, Peter, 2013, Australian Marsh Beetles (Coleoptera: Scirtidae) 4. Two new genera, Austrocyphon and Tasmanocyphon, pp. 1-74 in Zootaxa 3706 (1) on page 36, DOI: 10.11646/zootaxa.3706.1.1, http://zenodo.org/record/284605