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. T8 large, pentagonal, triangular caudal edge with dense hair fringe. No microtrichia. Apodemes slender, little longer than plate. S8 a broad semicircularly curved sclerite, no apodeme, no pilosity.

T9 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. S9 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.