Sagola aucklandensis 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 : 97

Sagola aucklandensis Park and Carlton , new species

( Figs. 54b, 54d , 55 )

Type Material. Holotype. NEW ZEALAND: Auckland: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ NEW ZEALAND AK Lynfield Wattle Bay 8 Oct 1986 G. Kuschel ”, “ Sifted rotten wood 86/21”, “ N.Z. Arthropod Collection, NZAC Private Bag 92170 AUCKLAND New Zealand”, “ HOLOTYPE Sagola aucklandensis Park and Carlton 2013 ” . Paratypes (n = 2: 1 male; 1 female). NEW ZEALAND: Auckland: 1♀ ( NZAC), same data as holotype ; 1♂ ( NZAC), Waikowhai Park, 5 X 1051, dead wood, P328 .

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

Diagnosis. This species can be distinguished from the other species of the excavata speciesgroup by the following combination of characters: size smaller, length 1.9–2.2 mm; Male tergite V distinctly depressed with rectangular processes from anterior and posterior edges; shape of antennomeres and genitalia unique to species.

Description. Length 1.9–2.2 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 54b ). Head: Round, as long as wide, widest across eyes ( Fig. 54b ). Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3 subquadrate, 4–7 subquadrate, 8–10 transverse. Frontal sulcus deep and reaching vertexal fovea. Anterior frontal fovea round and partially covered by frontal rostrum, posterior frontal fovea keyhole-shaped. Eye prominent, approximately one-half length of temple. Thorax: Prosternum as long as wide, widest at midpoint. Elytra rectangular ( Fig. 54b ). Meso- and metathorax trapezoidal, longer than wide. Abdomen: Tergite IV with pair of transverse patches of microtrichia reaching middle. Male tergite V distinctly depressed, with rectangular processes from anterior and posterior edges and with long and dense setae between processes. Aedeagus: Median lobe of genitalia slender, longer than parameres ( Fig. 54d ). Phallobase of median lobe symmetrical and reversed triangular ( Fig. 54d ). Parameres symmetrical with 3 setae apically ( Fig. 54d ).

Distribution. Auckland ( Fig. 55 : triangle).

Habitat. Specimens of this species were collected from rotten wood.

Figures

Fig. 54. Sagola species in the excavata species-group. Habitus, dorsal views: a) S. excavata, b) S. aucklandensis. Aedeagi, dorsal views: c) S. excavata, d) S. aucklandensis. S. excavata, male: e) Dorsal surface of head, f) Abdominal tergite V, dorsal view. Scale bars a–b = 1 mm, c–f = 0.1 mm.

Fig. 55. Known collection localities of New Zealand Sagola species. S. excavata: black circles; S. aucklandensis: triangle.