Sagola furcata Broun, 1921

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 : 91

Sagola furcata Broun, 1921

( Figs. 52a, 52g , 53 )

Sagola furcata Broun, 1921a: 495 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 242.

Type Material. Holotype. NEW ZEALAND: Nelson: 1♂ ( BMNH), glued on rectangular card, “ 4005. ♂ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922– 4 82.” [white l a b e l, p r i n t e d]; “ B e l g r o v e. 24.10.1914.” [white label, handwritten]; “ Sagola ♂ furcata.” [white label, handwritten].

Additional Material (n = 14: 10 males; 4 females). NEW ZEALAND: Nelson : 1♂ 1♀, 20km nw Motueka, Riwaka River Res , 28 V 1982, FMHD#2005-605 , mixed forest litter, S. Peck ; 2♂♂, Slaters Road, 0.7km s Whangamoa Saddle , 410m, 13 XII 1984 – 4 I 1985, Nothofagus forest, A. Newton, M. Thayer, 703, FIT & window trap ; 1♂ 1♀, Dun Track , 14 II 1942, E.S. Gourlay ; 1♂, Dun Mt. , 1850’, 4 IV 1966, J.C. Watt, fungus in Nothofagus forest ; 1♀, Dun Mt. , 2000′, 11 IV 1943, E.S. Gourlay ; 1♂, Upper Maitai , 19 X 1941, E.S. Gourlay ; Marlborough Sounds: 1♂ 1♀, Opouri Saddle, above Tennyson Inlet , 540m, 15 XII 1984 – 5 I 1985, Nothofagus forest, A. Newton, M. Thayer, litter ; 1♂, Opouri Saddle, above Tennyson Inlet , 540m, 15 XII 1984 – 5 I 1985, Nothofagus forest, A. Newton, M. Thayer, window trap ; 1♂, Tennyson Inlet, e side Duncan Bay , 30m, 15 XII 1984 – 5 I 1985, podo- Nothofagus forest, A. Newton, M. Thayer 709, FIT & window trap ; 1♂, Port Underwood saddle, 17 XII 1968, J.C. Watt .

Diagnosis. This species can be distinguished from the other species of the furcata speciesgroup by the following combination of characters: antennomeres 4–6 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.

Redescription. Length 1.8–2.1 mm. Body reddish brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 52a ). Head: Weakly transverse, widest across eyes ( Fig. 52a ). 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, 4–6 longer than wide, 7–10 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. 52a ). 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 broader with hook-shaped lobe at apex ( Fig. 52g ). Phallobase of median lobe symmetrical and rounded ( Fig. 52g ). Parameres symmetrical with serrate outer edge of apical lobe and setae inside ( Fig. 52g ).

Type Locality. Belgrove , near Nelson, New Zealand .

Distribution. Nelson, Marlborough Sounds ( Fig. 53 : black circles).

Habitat. Specimens of this species were collected using flight intercept and window traps or by sifting leaf litter in podocarp or Nothofagus forests.

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.