Eupines novem, Shen & Leschen, 2020

Shen, Jia-Wei & Leschen, Richard A. B., 2020, Revision of Eupines King of New Zealand (Coleoptera: Staphylinidae: Pselaphinae: Goniaceritae), Zootaxa 4777 (1), pp. 1-84 : 58

Eupines novem sp. nov.

Fig. 37 ; map Fig. 53

Diagnosis: Head with vertexal foveae punctiform; antennae 9-segmented with one-segmented antennal club; A4, A5, A6, A7 and A8 unmodified, A9 widest at middle, base strongly concave at inner side, slightly impressed near basal two-fifths in lateral view. Abdominal ventrite 2 unmodified; ventrite 6 unknown. Protrochanters with long ventral seta, about twice of protrochanteral width, lacking ventral spine; protibiae and mesotibiae unmodified.

Description: Body length 1.33 mm; body colour dark brown with lighter coloured legs. Head wider than long; frons not narrowed at end, about three-fourths width of head at eye level; eyes moderately developed, with about 16 facets; vertexal foveae punctiform; antennal tubercles moderately developed; postantennal notches distinct and broad; postantennal cavities large, about as long as antennal tubercles in dorsal view; antennae 9-segmented with single segmented antennal club; A4, A5, A6, A7 and A8 unmodified, A9 widest at middle, base strongly concave at inner side, slightly impressed near basal two-fifths in lateral view. Pronotum slightly longer than wide, slightly narrower than head at eye level; lacking lateral antebasal foveae. Elytra as long as wide, widest near apical two-thirds; lacking humeral calli; sutural stria barely visible in dorsal view. Abdomen with tergite 1 about 1.3 × longer than tergite 2; ventrite 2 unmodified; ventrite 6 unknown. Legs with protrochanters modified with long ventral seta, about twice of protrochanteral width, lacking ventral spine; protibiae and mesotibiae unmodified. Aedeagus unknown.

Comments: This species has an anomalous 9-segmented antennae ( Figs. 37 B–C), which separates it from all other Eupines species. We did not dissect the singleton of this new species nor establish a subgenus for it until we can find the evidence that the two existing subgenera are monophyletic.

Distribution: North Island. ND.

Etymology: This specific epithet means ‘nine’ in Latin, referring to the nine-segmented antennae of this species.

Type material ( NZAC): Holotype. ♂, specimen entire, card-mounted: “ NEW ZEALAND, ND, Pukenui For- est, Taraire Ridge Loop, 12 Nov 2018, J. Shen // sifted leaf litter & rotten woods, 35°41'96''S, 174°15'90''E”.

Figures

FIGURE 37. Diagnostic characters of E. (B.) novem sp. n. A) Habitus. B) Antenna, in dorsal view. C) Same, in ventral view. D) Protrochanter. E) Abdomen, in ventral view. Scale bars: A = 1 mm, B–E = 0.2 mm.

FIGURE 53. Geographic distributions of E. (B.) minuta sp. n., E. (B.) monstrosa (Reitter, 1880), E. (B.) mundula (Schaufuss, 1888), E. (B.) nemoralis (Broun, 1886), E. (B.) novem sp. n., E. (B.) obtusa sp. n., E. (B.) ovalis sp. n. and E. (B.) paganus (Broun, 1881) in New Zealand.