Sagola mercuryensis 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 : 138-139

Sagola mercuryensis Park and Carlton , new species

( Figs. 68l , 69l , 70l , 72 )

Type Material. Holotype. NEW ZEALAND: Coromandel : 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ NEW ZEALAND CL Mercury Is Green I 11– 23 Dec 1987 G. Hall ”, “ Pit traps under Coprosma ”, “ N.Z. Arthropod Collection, NZAC Private Bag 92170 AUCKLAND New Zealand”, “ HOLOTYPE Sagola mercuryensis Park and Carlton 2013 ” . Paratypes (n = 151: 70 males; 81 females). NEW ZEALAND: Coromandel : 12♂♂ ( NZAC) , same data as holotype ( NZAC) ; 2♂♂ 3♀♀ ( NZAC) , Ohena I, 25 XI 1972, G.W. Ramsay, litter 72/236; 2♂♂ 1♀ ( NZAC) , Ohena I, Koruenga I, 27 XI 1972, G.W. Ramsay, litter 72/247; 3♂♂ 1♀ ( NZAC) , Ohena I, G.W. Ramsay, 25 XI 1972, litter 72/233; 13♂♂ 20♀♀ ( NZAC) , Ohena I, 25 XI 1972, S.W. Ramsay, litter 72/235; 3♂♂ 1♀ ( NZAC), Mercury I, Korapuke I, 28 XI 1972, G.W. Ramsay, litter 72/249 ; 4♂♂ 3♀♀ ( NZAC), Mercury I, Stanley I, 24 XI 1972, G. Ramsay, litter 72/225 ; 4♂♂ 4♀♀ ( NZAC), Mercury I, Middle I, 21 XI 1972, G.W. Ramsay, litter 72/214 ; 3♂♂ 14♀♀ ( NZAC), Mercury I, Middle I, 21 XI 1972, G.W. Ramsay, litter 72/212 ; 1♂ 3♀♀ ( NZAC), Mercury I, Stanley I, 23 XI 1972, G.W. Ramsay, 72/220 ; 2♂♂ 1♀ ( NZAC), Mercury I, Korapuke I, 28 XI 1972, G.W. Ramsay, litter 72/254 ; 1♂ 1♀ ( NZAC), Mercury I, Korapuka I, 28 XI 1972, G.W. Ramsay, litter 72/253 ; 1♂ 1♀ ( NZAC), Mercury I, 24 XI 1972, G.W. Ramsay, litter 72/227 ; 1♂ 1♀ ( NZAC), Mercury I, Korapuke I, 28 XI 1972, G.W. Ramsay, litter 72/252 ; 1♀ ( NZAC), Mercury I, Korapuke I, 28 XI 1972, G.W. Ramsay, litter 72/249 ; 6♂♂ 6♀♀ ( NZAC), Mercury I, Korapuki I, 16 XII 1987, G. Hall, rotten wood litter ; 6♂♂ 13♀♀ ( NZAC), Mercury I, Middle I, 19 II 1984, G. Hall, litter ; 3♂♂ 3♀♀ ( NZAC), Mercury I, Middle I, 20 X 1983, I. Southey, litter ; 1♂ 1♀ ( NZAC), Mercury I, Middle I, 16–19 II 1984, G. Hall, pit trap ; 1♂ ( NZAC), Mercury I, Middle I, 23 XII 1987, G. Hall, litter ; 1♂ 3♀♀ ( AMNZ), Ohinau I, 5 XII 2000, C. McGuinness, pit trap .

Etymology. This species is named after the type locality, Mercury Island, Coromandel.

Diagnosis. This species can be distinguished from the other species of the insignis speciesgroup by the following combination of characters: body length 2.3–2.6 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; only known from Coromandel of North Island.

Description. Length 2.3–2.6 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 68l ). Head: Male head triangular, widest across temples ( Fig. 69l ). Female head bluntly triangular, widest across eyes. Antennomere 1 approximately 1.5 times longer than wide, 2–3 subquadrate, 4–5 longer than wide, 6–10 subquadrate. Frontal sulcus deep, reaching midpoint of eye. Anterior frontal fovea round, partially covered by frontal rostrum, posterior frontal fovea round. Eye large and prominent, approximately one-half length of temple. Temporal lobe of male head distinctly projecting, exceeding eye, with flattened ventral surface ( Fig. 69l ). Ventral surface of male head with transverse process behind mouthparts and round depression bearing 3 patches of dense setae ( Fig. 69l ). Thorax: Prosternum as long as wide, widest at one-third length. Elytra subquadrate ( Fig. 68l ). Meso- and metathorax trapezoidal, as long as wide. Abdomen: Male tergite IV with pair of small round patches of microtrichia, patches absent in female. Aedeagus: Median lobe of genitalia rectangular ( Fig. 70l ). Phallobase of median lobe symmetrical and rounded ( Fig. 70l ). Parameres symmetrical and slender with setae at apex and 1seta at midpoint ( Fig. 70l ).

Distribution. Coromandel ( Fig. 72 : white squares).

Habitat. Specimens of this species were collected using pitfall traps or by sifting moss, wood, or leaf litter.

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. 72. Known collection localities of New Zealand Sagola species. S. pertinax: black circles; S. monticola: triangles; S. laticeps: black squares; S. castanea: stars; S. sheldoni: white circles; S. mercuryensis: white squares.