Austrocyphon hamatus, Zwick, Peter, 2013

Zwick, Peter, 2013, Australian Marsh Beetles (Coleoptera: Scirtidae) 4. Two new genera, Austrocyphon and Tasmanocyphon, Zootaxa 3706 (1), pp. 1-74 : 64

Austrocyphon hamatus , sp. n.

( Figs. 214–217 )

Type material. Holotype ♂: Bellenden Ker Range, N.Q. 1 km S of Cable Tower 6 Oct– 17 Nov. 1981 500m Earthwatch/Qld.Museum, Pyrethrum knockdown / ANIC Coleoptera Voucher No. 83 -0596 ( QLD; ANIC).

Habitus. BL 2.0 mm, BL/BW ~ 1.7. Dark brown, yellowish pilosity. Apical flagellar segments infuscate, about 2.5 times as long as wide at tip.

Male. T 8 large, pentagonal, triangular caudal edge with dense hair fringe. No microtrichia. Apodemes slender, little longer than plate. S 8 a broad semicircularly curved sclerite, no apodeme, no pilosity.

T 9 exceptionally large, plate divided into two slender acute paramedian plates. Apodemes very long and stout, front ends curved mediad, rear ends leading to a shoulder-like ventrolateral knob from which originate two forwardly turned hooks, the longer being apparently hollow. S 9 with short unpaired base, plate deeply divided into two pilose lobes.

Penis narrowed towards both ends, pala shorter than rest. Fused parameroids ending in a narrow rounded tip. Foramen very long. Trigonium long and slender, middle narrower than apex which narrows and forms a blunt tip. The blunt-tipped trigonium happens to be bent forward in the only specimen.

Parameres of exceptional length, the hairpin-like base supporting straight, caudally pointed struts.

Notes. An unusual species, not even a distantly similar species known.

Figures

FIGURES 214 – 217. Austrocyphon hamatus sp. n., male. 214, T 8 and S 8 (partly concealed); 215, T 9; 216, S 9, tegmen, and parameres (fractioned, to fit on paper); 217, penis. All to the same scale.