Australian Marsh Beetles (Coleoptera: Scirtidae) 4. Two new genera, Austrocyphon and Tasmanocyphon Author Zwick, Peter text Zootaxa 2013 3706 1 1 74 journal article 10.11646/zootaxa.3706.1.1 a9befad7-4b65-4998-8e82-a00f933fdecb 1175-5326 284605 486DF839-3C97-4B16-9E2D-9E06F4D85F8F Austrocyphon quadridens , sp. n. ( Figs. 72–75 ) Type material . Holotype : ♂, Illawarra, N. S. Wales G.E.Bryant 4.x.08 / G.Bryant coll. 1919-147 / pictus Blkb. ? Compared with type G. J. A. / Cyphon pictus Blackb. Id. by J.Armstrong ( NHML ). Paratype : ♂, fenestratus Bl. (no other labels, body in poor shape; SAMA ). Habitus . BL 2.9 mm , elongate oval, BL/BW ~1.9. Uniformly brown, pronotal margin a bit rufous. Antennae (only the base is preserved) and legs light brown. Male . T9 with long widely separated apodemes, disc completely transparent and soft, only two caudo-lateral spinulose tips clearly pigmented and visible. S9 short and wide, base triangular, sides widening caudad in a curve, then abruptly restricted towards the sclerotized narrow caudal margin with two sharp points separated by a shallow U-shaped notch. Penis with narrow pala. Caudal part beyond base of trigonium much wider, forming a wide arch with narrow lateral and wide caudal sclerite strips. The membranous foramen inside this arch is much larger than the conical trigonium which carries a strong centema and some delicate apico-lateral spicules. Parameres long slender struts originating from a transverse bar-like capulus and ending in delicate sharp tips which are medially connected to transparent membranous lobes. Female . Not known. Etymology . Before dissection, the tips of T8 and S9 were superimposed, appearing like four sharp teeth. The specific name (derived from Latin quatuor , four, and dens , tooth) is treated like a noun in apposition.