Sagola egmontensis 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 : 144-145

Sagola egmontensis Park and Carlton , new species

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

Type Material. Holotype. NEW ZEALAND: Taranaki: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “New Zealand TK Patea Walk Mt Egmont 8.12.95”, “ In forest litter”, “ HOLOTYPE Sagola egmontensis Park and Carlton 2013 ”. The original label does not indicate who collected the holotype, but it was collected by J. Nunn. Paratypes (n = 4: 1 male; 3 females). NEW ZEALAND: Taranaki : 1♂ ( NZAC), Mt. Egmont , 914m, 23 I 1972, G.W. Ramsay, litter 72/67 ; 3♀♀ ( JTN), White Cliffs Tck, Mt. Messenger , 20 III 1994, J. Nunn .

Etymology. This species is named after the type locality, Mt. Egmont, Taranaki.

Diagnosis. This species can be distinguished from the other species of the insignis species-group by the following combination of characters: body length 2.6–3.0 mm; temporal lobe of male head distinctly projecting, exceeding eye, with concave ventral surface; ventral surface of male head with transverse process behind mouthparts and round depression bearing three patches of dense setae; male elytra rectangular, female elytra subquadrate; shape of antennomeres and genitalia unique to species; only known from Mt. Egmont in Taranaki of North Island.

Description. Length 2.6–3.0 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 68u ). Head: Male head triangular, widest across temples ( Fig. 69u ). Female head bluntly triangular, widest across eyes. Antennomere 1 approximately 1.5 times longer than wide, 2–7 longer than wide, 8–10 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-third length of temple. Temporal lobe of male head distinctly projecting, exceeding eye, with concave ventral surface ( Fig. 69u ). Ventral surface of male head with transverse process behind mouthparts and round depression bearing 3 patches of dense setae ( Fig. 69u ). Thorax: Prosternum as long as wide, widest at one-third length. Male elytra rectangular ( Fig. 68u ), female elytra subquadrate. Male meso- and metathorax trapezoidal, longer than wide, female as long as wide. Abdomen: Male tergite IV with pair of transverse patches of microtrichia, patches absent in female. Aedeagus: Median lobe of genitalia gourd-shaped ( Fig. 70u ). Phallobase of median lobe symmetrical and rounded ( Fig. 70u ). Parameres symmetrical and slender, setose from midpoints to apices ( Fig. 70u ).

Distribution. Taranaki ( Fig. 74 : black squares).

Habitat. Specimens of this species were collected by sifting 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. 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.