Sagola gyudongi 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 : 144

Sagola gyudongi Park and Carlton , new species

( Figs. 68t , 69t , 70t , 74 )

Type Material. Holotype. NEW ZEALAND: Marlborough: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ NEW ZEALAND: MB: Pelorus Bridge, 25 VII 1967 G. Kuschel, litter 67/220”, “ HOLOTYPE Sagola gyudongi Park and Carlton 2013 ” . Paratypes (n = 10: 8 males; 2 females). NEW ZEALAND: Buller : 2♂♂ ( DSC & FMNH) , Nelson Lakes NP, Lake Rotoiti, St. Arnaud tr, 670m, 14 XII 1984 – 6 I 1985, Nothofagus forest, A. Newton, M. Thayer 706, FIT & window trap ; 2♂♂ 2♀♀ ( FMNH) , Nelson Lakes NP, Lake Rotoiti, St. Arnaud tr, 645m, 14 XII 1984 – 6 I 1985, Nothofagus forest, A. Newton, M. Thayer 705, window trap; Nelson : 1♂ ( FMNH) , 20km ne Takaka , Tasman NP, 21 V 1982, FMHD#2005-591 , mixed forest litter, S. Peck; Marlborough Sounds: 3♂♂ ( LUNZ) , Outer Chetwode I, ( Te Kakaho ), 11–16 II 1988, M.H. Bowie, yellow pan trap in shoreline vegetation .

Etymology. This species is named for one of the enthusiastic supporters of this study, Gyu-Dong Han. He is one of the first author’ s colleagues and assisted with molecular components of the phylogenetic analysis.

Diagnosis. This species can be distinguished from the other species of the insignis speciesgroup by the following combination of characters: body length 2.6–3.0 mm; temporal lobe of male head distinctly projecting, exceeding eye, with flattened ventral surface; ventral surface of male head with transverse process behind mouthparts and round depression bearing three patches of dense setae; elytra subquadrate; shape of antennomeres and genitalia unique to species.

Description. Length 2.6–3.0 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 68t ). Head: Male head triangular, widest across temples ( Fig. 69t ). Female head bluntly triangular, widest across eyes. Antennomere 1 approximately 1.5 times longer than wide, 2–8 longer than wide, 9–10 subquadrate. Frontal sulcus deep, reaching midpoint of eye. Anterior frontal fovea round, partially covered by frontal rostrum, posterior frontal fovea round. Eye prominent, approximately one-third length of temple. Temporal lobe of male head distinctly projecting, exceeding eye, with flattened ventral surface ( Fig. 69t ). Ventral surface of male head with transverse process behind mouthparts and round depression bearing 3 patches of dense setae ( Fig. 69t ). Thorax: Prosternum as long as wide, widest at one-third length. Elytra subquadrate ( Fig. 68t ). Meso- and metathorax trapezoidal, as long as wide. Abdomen: Male tergite IV with or without pair of small, round patches of microtrichia, patches absent in female. Aedeagus: Median lobe of genitalia broad, with triangular apical lobe ( Fig. 70t ). Phallobase of median lobe symmetrical and rounded ( Fig. 70t ). Parameres symmetrical and triangular, setose from midpoints to apices ( Fig. 70t ).

Distribution. Buller, Marlborough, Nelson, Marlborough Sounds ( Fig. 74 : triangles).

Habitat. Specimens of this species were collected using window and yellow pan traps or by sifting leaf litter in Nothofagus forests or on shorelines.

Figures

Fig. 68. Habitus of Sagola species in the insignis species-group, dorsal views. a) S. insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Scale bars = 1 mm.

Fig. 69. Ventral views of male heads of Sagola species in the insignis species-group. a) Sagola insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Scale bars = 0.1 mm.

Fig. 70. Sagola species in the insignis species-group. Aedeagi, dorsal views: a) S. insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Male heads, dorsal surface: y) S. bipunctata, z) S. eminen. Scale bars = 0.1 mm.

Fig. 74. Known collection localities of New Zealand Sagola species. S. hanae: black circles; S. gyudongi: triangles; S. egmontensis: black squares; S. boonei: stars; S. stewartensis: white circles; S. jeongnamae: white squares.