Sagola pecki 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 : 92-93

Sagola pecki Park and Carlton , new species

( Figs. 52c, 52i , 53 )

Type Material. Holotype. NEW ZEALAND: Nelson: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ New Zealand: So. Island, 13 km W Collingwood, Mangarakau , 20 V 1982, FMHD#82-589 , mixed forest litter, S. Peck ”, “ HOLOTYPE Sagola pecki Park and Carlton 2013 ” . Paratypes (n = 2: 1 male; 1 female). NEW ZEALAND: Nelson : 2♀♀ (1♀, slide-mounted; FMNH), same data as holotype .

Etymology. This species is named for the collector of the holotype and world-renown beetle specialist, Stewart B. Peck.

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. Length 1.9–2.1 mm. Body reddish brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 52c ). Head: Weakly transverse, widest across eyes ( Fig. 52c ). 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, 6–9 subquadrate, 10 weakly transverse. 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. 52c ). 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 with hook-shaped apical lobe ( Fig. 52i ). Phallobase of median lobe symmetrical and rounded ( Fig. 52i ). Parameres symmetrical with serrate outer edge of apical lobe and setae inside ( Fig. 52i ).

Distribution. Nelson ( Fig. 53 : black square).

Habitat. Specimens of this species were collected by sifting mixed forest litter.

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.