Sagola gourlayi 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 : 60-61

Sagola gourlayi Park and Carlton , new species

( Figs. 34 , 36 )

Type Material. Holotype. NEW ZEALAND: Nelson: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “Paradise Peak 4500′ 6- 11-38, E. S. Gourlay ”, “E.S. Gourlay Acc. 1970 Ent. Div.”, “N.Z. Arthropod Collection, NZAC Private Bag 92170 AUCKLAND New Zealand”, “HOLOTYPE Sagola gourlayi Park and Carlton 2013 ”.

Etymology. This species is named for the collector of the holotype, Edward S. Gourlay.

Diagnosis. This species can be distinguished from other species by the following combination of characters: body length 2.3 mm; head transverse; eye large and prominent, one-half length of temple; neck bearing dense setae anteroventrally; shape of antennomeres and genitalia unique to species.

Description of Male. Length 2.3 mm. Body reddish brown, antennae, elytra, legs, and maxillary palpi paler ( Fig. 34a ). Head: Transverse, widest across eyes ( Fig. 34c ). Antennomere 1 approximately 2 times longer than wide, 2–3 subquadrate, 4–7 longer than wide, 8–10 subquadrate. Frontal sulcus deep and reaching midpoint of eye. Anterior and posterior frontal foveae oval, anterior frontal fovea open anteriorly. Eye large and prominent, one-half length of temple. Anterior ventral neck bearing dense setae. Thorax: Prosternum as long as wide, widest at midpoint. Elytra rectangular ( Fig. 34a ). Meso- and metathorax trapezoidal, longer than wide. Abdomen: Tergite IV with pair of transverse patches of microtrichia reaching middle. Aedeagus: Median lobe divided, apical major lobe elongate and umbrella-shaped ( Fig. 34b ). Phallobase of median lobe symmetrical and rounded ( Fig. 34b ). Parameres symmetrical, elongately triangular with setae at apex ( Fig. 34b ).

Distribution. Nelson ( Fig. 36 : triangles).

Habitat. Unknown.

Comments. The holotype suffered crushing damage to the frons and mouthparts, so the described shape of the frontal sulcus and fovea may differ from the original condition.

Figures

Fig. 34. Sagola gourlayi (gourlayi species-group). a) Habitus, dorsal view, b) Aedeagus, dorsal view, c) Dorsal surface of male head (arrow indicates open anterior frontal fovea). Scale bar a = 1 mm, b–c = 0.1 mm.

Fig. 36. Known collection localities of New Zealand Sagola species. S. lescheni: black circles; S. gourlayi: triangles; S. sharpi: black squares.