Pseudoexeirarthra kwangguki, Park, Jong-Seok & Carlton, Christopher E., 2015

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 : 104-105

Taxon classification Animalia Coleoptera Staphylinidae

Pseudoexeirarthra kwangguki sp. n. Figs 1E, 3E, 5

Type material.

Holotype. New Zealand: Stewart Island (SI): 1♂ (NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, "New Zealand: SI: Table Hill, 366-610m 15 II 1968, G. Kuschel Moss 68/52", "HOLOTYPE Pseudoexeirarthra kwangguki Park and Carlton des. 2013". Paratypes (2 females): New Zealand: Stewart Island (SI): 2♀♀ (1♀, slide-mounted), same data as holotype (NZAC).

Etymology.

This species is named for Dr. Kwang-Guk An, Professor of Biology, Chungnam National University (Daejeon, South Korea), freshwater ecosystem specialist, and an enthusiastic supporter of this study.

Diagnosis.

This species is distinguished from the other species of this genus by the following combination of characters: body length 1.8-2.0 mm; eyes one-half lengths of temples (Fig. 1E); elytra subquadrate (Fig. 1E); hind wings represented by small pads; tergite IV without patch of microtrichia (Fig. 1E); antennomeres 3-6 subquadrate, 7-10 weakly transverse; median lobe of male genitalia deeply divided (Fig. 3E); parameres nearly symmetrical, setae limited to apical fourth (Fig. 3E); known from Stewart Island (Fig. 5: black triangle).

Description.

Length 1.8-2.0 mm. Body reddish brown, antennae, legs, maxillary palpi and elytra paler (Fig. 1E). Head round, as long as wide, widest across eyes (Fig. 1E). Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3-6 subquadrate, 7-10 weakly transverse. Eyes one-half length of temples. Prosternum as long as wide, widest at one-third length. Elytra as long as wide (Fig. 1E). Hind wings represented by small pads. Meso- metaventrites trapezoidal, as long as wide. Tergite IV without patch of microtrichia. Median lobe deeply divided (Fig. 3E). Phallobase symmetrical and rounded (Fig. 3E). Parameres symmetrical, setae at apical fourth (Fig. 3E).

Distribution.

Stewart Island (SI) (Fig. 5: black triangle).

Habitat.

Specimens were collected by sifting moss litter.