Sagola plentyensis 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 : 23-24

Sagola plentyensis Park and Carlton , new species

( Figs. 8d, 8h , 10 )

Type Material. Holotype. NEW ZEALAND: Bay of Plenty: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ New Zealand: BP: Ikitiki Stream Mamaku Plateau Horohoro S.F. 24 VII 1976, J.S. Dugdale Litter 76/48”, “HOLOTYPE Sagola plentyensis Park and Carlton 2013 ”. Paratypes (4 males). NEW ZEALAND: Bay of Plenty: 2♂♂ ( NZAC), same data as holotype; 1♂ ( NZAC), Tapapa, 300m, 25 III 1978, S.B. Peck, litter; Waikato: 1♂ ( NZAC), Kaimai Ranges, Matamata, A. E. Brookes, V 1920.

Etymology. The species name is based on the biotic region of the type locality, Bay of Plenty.

Diagnosis. This species can be distinguished from the other species of the rugifrons speciesgroup by the following combination of characters: smaller body, length 2.1–2.6 mm; frontal rostrum with distinctive punctures; antennomere 1 approximately 2 times longer than wide, 2–8 subquadrate, 9–10 transverse; round posterior frontal fovea not surrounded by dense setae; ventral surface of male head with weak pair of short carinae behind eyes; shape of genitalia unique to species.

Description of Male. Length 2.1–2.6 mm. Body brown, elytra, legs, and maxillary palpi paler ( Fig. 8d ). Head: As long as wide, widest across eyes ( Fig. 8d ). Frontal rostrum with distinctive punctures. Ventral surface of male head with weak pair of short carinae behind eyes. Antennomere 1 approximately 2 times longer than wide, 2–8 subquadrate, 9–10 transverse. Frontal sulcus deep and reaching midpoint of eye from frontal rostral lobes. Anterior frontal fovea round. Posterior frontal fovea round. Eye small and prominent, onehalf length of temple. Thorax: Prosternum as long as wide, widest at midpoint. Elytra rectangular ( Fig. 8d ). Hind wings well-developed. Meso-and metathorax trapezoidal, longer than wide. Abdomen: Tergite IV with pair of transverse patches of microtrichia reaching middle. Aedeagus: Median lobe longer than parameres and divided, major lobe rectangular ( Fig. 8h ). Phallobase of median lobe slightly symmetrical and rounded ( Fig. 8h ).

Distribution. Bay of Plenty, Waikato ( Fig. 10 : black squares).

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

Figures

Fig. 8. Sagola species in the rugifrons species-group. Habitus, dorsal views: a) Sagola rugifrons, b) S. waipouaensis, c) S. brouni, d) S. plentyensis. Aedeagi, dorsal views: e) S. rugifrons, f) S. waipouaensis, g) S. brouni, h) S. plentyensis. S. waipouaensis, male head: i) Dorsal surface, j) Ventral surface (arrow indicates bean-shaped opening). Scale bars a–d = 1 mm, e–j = 0.1 mm.

Fig. 10. Known collection localities of New Zealand Sagola species. S. waipouaensis: black circles; S. brouni: triangles; S. plentyensis: black squares.