Sagola mackenziensis 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 : 122-123

Sagola mackenziensis Park and Carlton , new species

( Figs. 66f, 66l, 66t , 67 )

Type Material. Holotype. NEW ZEALAND: Mackenzie: ♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “New Zealand MK Hooker Valley Mt Cook NP 14-Apr-06”, “ HOLOTYPE Sagola mackenziensis Park and Carlton 2013 ” . Paratypes (n = 5: 3 males; 2 females). NEW ZEALAND: Central Otago : 1♂ ( NZAC), Mt. Ida, 3000′, Naseby , 8 XI 1968, J.I. Townsend, moss 68/161 ; Mid Canterbury: 1♀ ( LUNZ), Mt Hutt, 1000m, Scotts Saddle , 27 XI 1981, R. M. Emberson, litter ; 1♀ ( NZAC), Mt. Hutt , 11 V 2003, A.C. Eyles 2003, mountain beech litter ; Mackenzie: 1♂ ( JTN), same data as holotype ; 1♂ ( JTN), Tasman Vly, Mt. Cook NP, 3 II 2006 .

Etymology. The species name is based on the biotic region of some of the type material, Mackenzie.

Diagnosis. This species can be distinguished from the other species of the major species-group by the following combination of characters: body length 1.9–2.1 mm; eye one-half length of temple; ventral temple of male head with depressed and projecting temporal lobe and surface weakly concave; shape of antennomeres and genitalia unique to species; found from South Island.

Description. Length 1.9–2.1 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 66f ). Head: Male head triangular, widest across temples ( Fig. 66f ). Female head bluntly triangular, widest across eyes. Ventral temple of male head with depressed and projecting temporal lobe and surface weakly concave ( Fig. 66t ). Thick, dense setae on male gular depression. Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3 subquadrate, 4–5 longer than wide, 6–10 subquadrate. Frontal sulcus shallow, reaching midpoint of eye. Anterior frontal fovea oval, partially covered by frontal rostrum, posterior frontal fovea oval. Eye large and prominent, one-half length of temple. Thorax: Prosternum as long as wide, widest at one-third length. Male elytra rectangular ( Fig. 66f ), 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 reaching middle, patches absent in female. Aedeagus: Median lobe of genitalia divided vertically, upper lobe narrow apically ( Fig. 66l ). Phallobase of median lobe symmetrical and rounded ( Fig. 66l ). Parameres symmetrical broader than median lobe, with setae apically ( Fig. 66l ).

Distribution. Central Otago, Mid Canterbury, Mackenzie ( Fig. 67 : white squares).

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

Figures

Fig. 66. Sagola species in the major species-group. Habitus, dorsal views: a) S. major, b) S. triregia, c) S. marrisi, d) S. boothi, e) S. prowellae, f) S. mackenziensis. Aedeagi, dorsal views: g) S. major, h) S. triregia, i) S. marrisi, j) S. boothi, k) S. prowellae, l) S. mackenziensis. S. major, male: m) Fore femur (arrow indicates trochanter), n) Dorsal surface of head. Male heads, ventral views: o) S. major, p) S. triregia, q) S. marrisi, r) S. boothi, s) S. prowellae, t) S. mackenziensis. Scale bars a–f = 1 mm, g–t = 0.1 mm.

Fig. 67. Known collection localities of New Zealand Sagola species. S. major: black circles; S. triregia: triangle; S. marrisi: black square; S. boothi: star; S. prowellae: white circle; S. mackenziensis: white squares.