Pseudoexeirarthra colorata (Broun)

Park, Jong-Seok & Carlton, Christopher E., 2015, Pseudoexeirarthra, a new genus from New Zealand (Coleoptera, Staphylinidae, Pselaphinae), with descriptions of seven new species, ZooKeys 491, pp. 95-118 : 101-103

Taxon classification Animalia Coleoptera Staphylinidae

Pseudoexeirarthra colorata (Broun) Figs 1B, 3B, 4

Sagola colorata Broun, 1914: 156. Hudson 1923: 365; 1934: 184. Newton and Thayer 2005. Nomura and Leschen 2006: 241.

Sagola insueta Broun, 1914: 157. Hudson 1923: 365; 1934: 184. Newton and Thayer 2005. Nomura and Leschen 2006: 242. syn. n.

Type material.

Holotype. New Zealand: Mid Canterbury (MC): 1♀ (BMNH), glued on rectangular card, “Type” [red label, printed]; “3519.” [white label, handwritten]; "New Zealand Broun Coll. Brit. Mus. 1922-482." [white label, printed]; "McClennans. 25.3.1912." [white label, handwritten]; " Sagola colorata ." [white label, handwritten].

Holotype of Sagola insueta . New Zealand: Mid Canterbury (MC): 1♀ (BMNH), glued on rectangular card, “Type” [red label, printed]; “3521.” [white label, handwritten]; "New Zealand Broun Coll. Brit. Mus. 1922-482." [white label, printed]; "Rakaia. 6.7.1912." [white label, handwritten]; " Sagola insueta " [white label, handwritten].

Additional material

(n = 23; 21 males, 2 females). New Zealand: Dunedin (DN): 1♂, Nicol Creek, Leith Valley, 25 V 2006, J. Nunn, litter (JTN); 1♂, Vauxhall, 13 IX 2001, J. Nunn, FIT (JTN); 1♂, The Tunnels, Silverpeaks, 2 VI 2001, J. Nunn, moss and litter (JTN); 1♂, Vauxhall, 26 II 2011, 45°54.24'S, 170°31.89'E, 167 m, J. Nunn, washes soil (JTN); 1♂, Town Belt, 26 VII 1997, J. Nunn, decayed wood (JTN); 1♂, Vauxhall, 27 I 2000, J. Nunn, FIT (JTN); Fiordland (FD): 6♂ 1♀, Lake Hauroko, 2 XI 1966, J. I. Townsend, litter (NZAC); 1♂, Hollyford Camp, 10 XII 1966, A. K. Walker, litter (NZAC); Mid Canterbury (MC): 7♂♂, Banks Peninsula, Hay Scenic Res, Pigeon Bay, 25 m, 11 XII 1984-22 I 1985, Podocarp-hdwd forest, A. Newton, M. Thayer 702, window trap (FMNH); 1♂, Craigieburn SF, 850 m, #023, 42°10.8'S, 171°42'E, Nothofagus litter, 9 I 1998, C. Carlton, R. Leschen (LSAM); 1♀, McLellans Bush, Mt. Hutt, 11 I 2008, J. Nunn, on sooty mould on beech bole (JTN).

Diagnosis.

This species is distinguished from the other species of this genus by the following combination of characters: body length 2.2-2.5 mm; eyes large, two-thirds length of temples (Fig. 1B); antennomeres 2-7 longer than wide, 8-10 subquadrate; median lobe of male genitalia divided, minor lobe longer than major lobe and covered with small tubercles (Fig. 3B); parameres symmetrical, setae present from apices to middle (Fig. 3B).

Redescription.

Length 2.2-2.5 mm. Body reddish brown, antennae, legs, maxillary palpi and elytra paler (Fig. 1B). Head rectangular, longer than wide, widest across eyes (Fig. 1B). Antennomere 1 approximately 1.5 times longer than wide, 2-7 longer than wide, 8-10 subquadrate. Eyes large and prominent, two-thirds length of temples. Prosternum as long as wide, widest at apical one-third. Elytra longer than wide (Fig. 1B). Hind wings fully developed. Meso- and metaventrites trapezoidal, longer than wide. Tergite IV with pair of transverse patches of microtrichia reaching middle. Median lobe of genitalia divided, minor lobe longer than major lobe and covered with small tubercles (Fig. 3B). Phallobase symmetrical and rounded (Fig. 3B). Parameres symmetrical, setae present from apices to middle (Fig. 3B).

Type locality.

McClennan’s Bush, near Methven (MC), New Zealand.

Distribution.

Dunedin (DN), Fiordland (FD), Mid Canterbury (MC) (Fig. 4: black triangles).

Habitat.

Specimens were collected using flight intercept traps, and by soil washing or sifting leaf and wood litter.

Comments.

The type specimen of Sagola insueta shares the diagnostic characters of Pseudoexeirarthra colorata . For this reason, we have placed Sagola insueta in synonymy with Pseudoexeirarthra colorata .