Paranagonus excavatus, Č, Peter Hlavá, 2009

Č, Peter Hlavá, 2009, The Pselaphinae (Coleoptera: Staphylinidae) of New Caledonia and Loyalty Islands. II. Revision of the tribe Tyrini Reitter, 1882, Zootaxa 2010, pp. 46-56 : 55

Paranagonus excavatus sp. nov.

( Figs. 7 , 19, 20 )

Type material (ɗ): Holotype: NEW CALEDONIA: ɗ, (p) NEW CALEDONIA, Col d’Amieu, W slope, 27 January 2004, G.B.Monteith / QM Berlesate 1120, 21o37’S x 165o49’E, rainforest, 470 m, sieved litter / red label (p) HOLOTYPE Paranagonus excavatus sp. nov., P. Hlaváč det., 2007, ( MNHN).

Description. Body length 1.85 mm, shining and with dense, erect golden setae; head and pronotum brown, elytra, abdomen, legs and antennae lighter, yellowish brown, maxillary palpi yellow.

Head triangular, frontal rostrum about half as wide as base of head, rostral apex with deep but short triangular depression between well defined antennal tubercles; eyes with six facets; antennae long, scape seven times as long as pedicel and about 1.7 times as long as terminal antennomere, pedicel short, 1.5 times shorter than antennomere IV, antennomeres III–V elongate, IV–V of about the same length, 1.3 times as long as III, antennomere VII slightly longer than globular antennomere VI, antennomeres VIII–X transverse, IX–X about same size and larger than asymmetric antennomere VIII, terminal antennomere pointed at apex, about twice as long as wide.

Pronotum about as long as wide and 1.3 times as long as head, widest just behind anterior corners, lateral foveae setose. Abdomen 1.4 times longer than elytra, first visible tergite (tergite IV) twice as long as second (tergite V).

Legs shorter; mesofemur with large and deep excavation at apex; protrochanter with large truncate protuberance; profemur close to base with large spine.

Aedeagus as in Figs. 19, 20 .

Biology. Holotype was sifted from leaf litter in rainforest and extracted by Berlese.

Etymology. The species name refers to the deep excavation in the apical part of each mesofemur.

Figures

FIGURES 2 – 7. Habitus photos of Tyrini. 2 — Anagonus fracticornis Fauvel; 3 — A. breviscapus sp. nov.; 4 — A. spinipalpis sp. nov.; 5 — Caledonogonus loebli sp. nov.; 6 — C. pilosus sp. nov.; 7 — Paranagonus excavatus sp. nov.

FIGURES 13 – 20. Aedeagus of Tyrini, dorsal (13, 15, 17, 19) and lateral (14, 16, 18, 20) aspects. 13, 14 — Anagonus fracticornis Fauvel; 15, 16 — Caledonogonus loebli sp. nov.; 17, 18 — C. pilosus sp. nov. (parameres missing); 19, 20 — Paranagonus excavatus sp. nov. Scale bar 0.2 mm.