Austrocyphon quadridens, Zwick, Peter, 2013

Zwick, Peter, 2013, Australian Marsh Beetles (Coleoptera: Scirtidae) 4. Two new genera, Austrocyphon and Tasmanocyphon, Zootaxa 3706 (1), pp. 1-74 : 28

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. T 9 with long widely separated apodemes, disc completely transparent and soft, only two caudo-lateral spinulose tips clearly pigmented and visible. S 9 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 T 8 and S 9 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.

Figures

FIGURES 72 – 75. Austrocyphon quadridens sp. n., male. 72, T 9; 73, S 9; 74, penis; 75, tegmen and parameres. All to the same scale.