Sagola helmorei, SHARP

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 : 53-54

10. helmorei species-group

(2 species)

Diagnosis. Members of the helmorei speciesgroup can be distinguished from other Sagola species-groups by the following combination of characters: body length 2.3–2.9 mm; head subquadrate with dense setae around frontal sulcus ( Fig. 29a–b ); antennomere 1 approximately 2.5 times longer than wide with dull surface; anterior and posterior frontal foveae round ( Fig. 29e ); frontal sulcus reaching midpoint of eye ( Fig. 29e ); hind wings welldeveloped; legs elongate and slender ( Fig. 29a–b ); abdominal tergites IV–VI with discal carinae; genitalia small, not exceeding 0.25 mm ( Fig. 29c–d ); present on North Island, not known from South Island ( Fig. 30 ).

KEY TO SPECIES OF THE HELMOREI SPECIES- GROUP

The key is mainly based on male specimens because most female specimens are indistinguishable based on external morphology.

1. Ventral surface of temple normal ( Fig. 29f ); antennomeres 6–8 longer than wide; left paramere divided for one-third length ( Fig. 29c ) ...................................... S. helmorei new species

1′. Ventral surface of temple depressed and flat; antennomeres 6–8 subquadrate; left paramere more deeply divided for two-thirds length ( Fig. 29d ) ....... S. wellingtonensis new species

Figures

Fig. 29. Sagola species in the helmorei species-group. Habitus, dorsal views: a) S. helmorei, b) S. wellingtonensis. Aedeagi, dorsal views: c) S. helmorei, d) S. wellingtonensis. S. helmorei, male head: e) Dorsal surface, f) Ventral surface. Scale bars a–b = 1 mm, c–f = 0.1 mm.

Fig. 30. Known collection localities of New Zealand Sagola species.S. helmorei: black circles;S. wellingtonensis: triangle.