Sagola spiniventris Broun, 1912

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 : 67-68

Sagola spiniventris Broun, 1912

( Figs. 37b , 38b, 38j , 39 )

Sagola spiniventris Broun, 1912b: 627 . Hudson 1923: 365, 1934: 183; Raffray 1924: 232; Newton and Thayer 2005b; Nomura and Leschen 2006: 244.

Sagola occipitalis Broun, 1912b: 624 . Hudson 1923: 365, 1934: 183; Raffray 1924: 232; Newton and Thayer 2005b; Nomura and Leschen 2006: 243. New synonymy.

Type Material. Holotype. NEW ZEALAND: Marlborough Sounds : 1♀ ( BMNH), glued on rectangular card, “Type” [red label, printed]; “17.” [white label, handwritten]; “Picton, New Zealand Helms.” [white label, printed]; “Sharp Coll. 1905-313” [white label, printed]; “ Sagola ♂ spiniventris.” [white label, handwritten] . Holotype of Sagola occipitalis : NEW ZEALAND: Buller : 1♀ ( BMNH), glued on rectangular card, “Type” [red label, printed]; “11.” [white label, handwritten]; “Greymouth, New Zealand. Helms.” [white label, printed]; “Sharp Coll. 1905-313” [white label, printed]; “ Sagola occipitalis .” [white label, handwritten] .

Additional Material (n = 15: 8 males; 7 females). NEW ZEALAND: Buller : 1♂, Nelson Lks NP, Lake Rotoiti, St. Arnaud tr , 645m, 14 XII 1984 – 6 I 1985, Nothofagus forest, A. Newton, M. Thayer 705, window trap; 1♂, Mt. Robert, carpark, 9 IV 2004, R. Leschen, H. Harman, T. Buckley, litter RL864, 41.49′S 172.48′E; Fiordland: 1♀, Fiordland NP, Kepler tr, below Mt. Luxmore Hut, 900m, 45”24.86′S, 167”38.675′E, 11 XII 2005, Nothofagus forest, FMHD #2005-101, berl, leaf & log litter, A. Solodovnikov, D. Clarke, ANMT site 1176; Mid Canterbury: 1♂, Banks Peninsula Ahuriri Scenic Res., 480m, 1 IV 1982, G. Kuschel, litter and rotten wood 82/48; Nelson: 1♂, 30km sw Collingwood 15mi Ck, 100m, 23 V 1982, FMHD #82-597, log litter, S. Peck; 2♀♀, Kahurangi NP, Cobb Ridge, above Cobb Reservoir, 1050m, 41”06.351′S, 172”41.658′E, 29 XI–18 XII 2005, Nothofagus menziesii & N. solandri cliffortioides forest, FMHD #2005-051, FIT, A. Newton, M. Thayer, A. Solodovnikov, ANMT site 1159; 1♀, Kahurangi NP, Arthur Range, above Flora Saddle, 1000m, 41” 11.351′S, 172”44.456′E, 28 XI 2005, Nothofagus dominant forest, under bark of small logs, A. Newton, M. Thayer, ANMT site 1156; 1♀, Dun Mt., 2500′, 13 II 1961, G. Kuschel; Marlborough Sounds: 1♂, Tennyson Inlet, e side Duncan Bay, 30m, 15 XII 1984 – 5 I 1985, podo- Nothofagus forest, A. Newton, M. Thayer 709, pyrethrin fogging fungusy log; Westland: 1♀, Deception R, 20 XI 1978, S.P. Worner, mixed podocarp litter; 1♀, Okuku Scenic Reserve, 46.7km w Otira, 75m, 42′43S 171′14E, #050, Laurelia novae-zelandiae leaf litter berlese, 12 I 1998, C. Carlton, R. Leschen; Wellington: 1♂, Manukau Rd, north road end, 20 X 1996, in moderately wet forest litter, J. Nunn; 1♂, Atatapia Stm, Tararua FP, 19 IX 1993, J. Nunn, in wood mould.

Diagnosis. This species can be distinguished from the other species of the auripila speciesgroup by the following combination of characters: body length 2.1–2.3 mm; male antennomeres 5–10 enlarged; frontal sulcus deep and wide, reaching vertexal fovea; posterior frontal fovea large and oval; shape of antennomeres and genitalia unique to species.

Redescription. Length 2.1–2.3 mm. Body reddish brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 37b ). Head: Round, widest across eyes ( Fig. 37j ). Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3–10 subquadrate, male 5–10 enlarged. Frontal sulcus deep and wide, reaching vertexal fovea. Anterior frontal fovea round, posterior frontal fovea large oval. Eye large and prominent, approximately one-half length of temple. Thorax: Prosternum as long as wide, widest at midpoint. Elytra approximately triangular ( Fig. 37b ). Meso-and metathorax trapezoidal as long as wide. Aedeagus: Median lobe slender ( Fig. 38b ). Phallobase of median lobe symmetrical and rectangular ( Fig. 38b ). Parameres symmetrical and curved to C-shaped with setae apically and 1 seta at middle ( Fig. 38b ).

Type Locality. Picton , Marlborough Sounds, New Zealand .

Distribution. Buller, Fiordland, Nelson, Mid Canterbury, Marlborough Sounds, Westland, Wellington ( Fig. 39 : triangles).

Habitat. Specimens of this species were collected by fogging or sifting leaf or decayed log litter in podocarp or Nothofagus forests.

Comments. Specimens of S. spiniventris can be distinguished from other species by the enlarged male antennomeres 5–10; deep and wide frontal sulcus reaching a point even with the vertexal fovea; posterior frontal fovea large and oval; and the shape of the antennomeres and genitalia. The type specimens of S. occipitalis share these diagnostic characters. For these reasons, we have placed S. occipitalis in synonymy with S. spiniventris .

Figures

Fig. 37. Habitus of Sagola species in the auripila species-group, dorsal views. a) S. auripila, b) S. spiniventris,

Fig. 38. Sagola species in the auripila species-group. Aedeagi, dorsal views: a) S. auripila, b) S. spiniventris, c) S. chathamensis, d) S. pittensis, e) S. chandleri, f) S. threekingsensis, g) S. gimmeli, h) S. sokolovi, lateral view, i) S. sokolovi. Dorsal surface of male head: j) S. spiniventris (arrow indicates wide frontal sulcus), k) S. chathamensis (arrow indicates narrow frontal sulcus). Scale bars = 0.1 mm.

Fig. 39. Known collection localities of New Zealand Sagola species. S. auripila: black circles; S. spiniventris: triangles; S. chathamensis: black square.