Sagola, 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 : 31-32

4. baiknami species-group

(7 species)

Diagnosis. Members of the baiknami speciesgroup can be distinguished from other Sagola species-groups by the following combination of characters: body length 2.2–3.1 mm; antennomere 1 approximately 2 times longer than wide with dull surface; gular region of male head with transverse depression and with blunt process in middle ( Fig. 16i : arrow); fore femur with semicircular depression; abdominal tergites IV–VI with discal carinae; present on North Island, not known from South Island ( Figs. 17–18 ).

KEY TO SPECIES OF THE BAIKNAMI SPECIES- GROUP

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

1. Body large,> 2.9 mm; mid-tibia not bent; median lobe of genitalia S-shaped ( Fig. 16a ) ............................. S. baiknami new species

1′. Body smaller, <2.8 mm; mid-tibia bent; median lobe of genitalia straight or bent at 90°.......................................................2

2(1′). Antennomeres 4–11 bearing tubercles; fore tibia with semicircular depression ..... ................................. S. watti new species

2′. Antennomeres without tubercles; fore tibia without depression...................................3

3(2′). Apical lobe of genitalia bird-head- or umbrella-shaped.......................................4

3′. Apical lobe of genitalia blunt.................5

4(3). Apical lobe of genitalia bird-head-shaped; right paramere without minor lobe ( Fig. 16d ) ............................ S. taupoensis new species

4′. Apical lobe of genitalia umbrella-shaped; right paramere with minor lobe ( Fig. 16e ) ............................... S. nunni new species

5(3′). Median lobe slender, approximately 3 times longer than wide; left paramere U-shaped ( Fig. 16g ) ........... S. choeunae new species

5′. Median lobe slender, at least 4 times longer than wide; left paramere L-shaped........... 6

6(5′). Right paramere with 2 acute lobes ( Fig. 16c ) ............................ S. butcherae new species

6′. Right paramere with arm-shaped lobe and 2 acute lobes ( Fig. 16f ) ............................ ........................ S. sunsookae new species

Figures

Fig. 16. Sagola pecies in the baiknami species-group. Aedeagi, dorsal views: a) S. baiknami, b) S. watti, c) S. butcherae, d) S. taupoensis, e) S. nunni, f) S. sunsookae, g) S. choeunae. S. watti, male head: h) Dorsal surface, i) Ventral surface (arrow indicates transverse depression). Scale bars = 0.1 mm.

Fig. 17. Known collection localities of New Zealand Sagola species. S. baiknami: black circles; S. watti: triangles; S. butcherae: black square; S. taupoensis: stars.

Fig. 18. Known collection localities of New Zealand Sagola species. S. nunni: black circles; S. sunsookae: triangles; S. choeunae: black square.