Sagola muirae Park and Carlton

Park, J. - S. & Carlton, C. E., 2014, A revision of the New Zealand species of the genus Sagola Sharp (Coleoptera: Staphylinidae: Pselaphinae: Faronitae), The Coleopterists Bulletin (mo 13) 68, pp. 1-156 : 93

Sagola muirae Park and Carlton , new species

( Figs. 52d, 52j , 53 )

Type Material. Holotype. NEW ZEALAND: Nelson: 1♂ ( LUNZ), aedeagus dissected and mounted in balsam on a clear plastic card, “ NEW ZEALAND, NN Mt Burnett 450m 8.ii.1981 C.A. Muir sweeping ferns”, “ HOLOTYPE Sagola muirae Park and Carlton 2013 ” . Paratype (1 male). NEW ZEALAND: Nelson : 1♂ (slidemounted; NZAC) Whanganui Inlet, Kaihoka Lakes Tr, 17 XII 2007, K. Marske, J. Allwood. Hand collected ex fungus-encrusted dead wood, S 40.33.220′, E 172.36.247′, 52m.

Etymology. This species is named for the collector of the holotype, Carol A. Muir.

Diagnosis. This species can be distinguished from the other species of the furcata speciesgroup by the following combination of characters: antennomeres 4–5 longer than wide; frontal sulcus inverted Y-shaped; eye prominent, approximately one-third length of temple; male abdominal ventrites V–VI weakly depressed medially and surrounded by dense setae; shape of genitalia unique to species.

Description of Male. Length 1.8–2.0 mm. Body reddish brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 52d ). Head: Weakly transverse, widest across eyes ( Fig. 52d ). Ventral surface of male head with inverted triangular process bearing dense setae behind mouthparts. Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3 subquadrate, 4–5 longer than wide, 6–10 subquadrate. Frontal sulcus inverted Y-shaped. Anterior frontal fovea rectangular, covered by frontal rostrum, posterior frontal fovea absent. Eye prominent, approximately one-third length of temple. Thorax: Prosternum as long as wide, widest at midpoint. Elytra rectangular ( Fig. 52d ). Meso- and metathorax trapezoidal, longer than wide. Abdomen: Tergite IV with pair of transverse patches of microtrichia reaching middle. Male abdominal ventrites V–VI weakly depressed on middle with dense setae. Aedeagus: Median lobe of genitalia slender and curved, C-shaped ( Fig. 52j ). Phallobase of median lobe symmetrical and rounded ( Fig. 52j ). Parameres symmetrical with enlarged apical lobe with serrate midline and setae ( Fig. 52j ).

Distribution. Nelson ( Fig. 53 : stars).

Habitat. Specimens of this species were collected from tree ferns or fungusy dead wood.

Figures

Fig. 52. Sagola species in the furcata species-group. Habitus, dorsal views: a) S. furcata, b) S. punctulata, c) S. pecki, d) S. muirae, e) S. ignota, f) S. lewisensis. Aedeagi, dorsal views: g) S. furcata, h) S. punctulata, i) S. pecki, j) S. muirae, k) S. ignota, l) S. lewisensis. m) S. lewisensis, aedeagus, lateral view, n) S. ignota, antenna. S. punctulata, male head: o) Dorsal surface (arrow indicates inverted Y-shaped frontal sulcus), p) Ventral surface. S. ignota, male head: q) Dorsal surface (arrow indicates inverted V-shaped frontal sulcus), r) Ventral surface. Scale bars a–f = 1 mm, g–r = 0.1 mm.

Fig. 53. Known collection localities of New Zealand Sagola species. S. furcata: black circles; S. punctulata: triangles; S. pecki: black square; S. muirae: stars; S. ignota: white circles; S. lewisensis: white squares.