Stenosagola ramsayi Park and Carlton

Park, J. - S. & Carlton, C. E., 2013, A Revision of the New Zealand GenusStenosagolaBroun, 1921 (Coleoptera: Staphylinidae: Pselaphinae: Faronitae), The Coleopterists Bulletin 67 (3), pp. 335-359 : 344-345

Stenosagola ramsayi Park and Carlton , new species

Type Material. Holotype. NEW ZEALAND: TARANAKI ( TK): ♂ (winged male), “New Zealand: TK: Mt. Messenger , 182m 23 I 1972, G.W. Ramsay Litter 72/66”, “ HOLOTYPE Stenosagola ramsayi Park and Carlton des. 2013” . Paratypes (n = 11: 7 males, 4 females). NEW ZEALAND: NELSON ( NN) : 1♂, Gouland Downs , 792m, Heaphy Tk., 5 II 1966, J.I. Townsend, Moss 66/66 ( NZAC) ; TARANAKI ( TK) : 2♂♂ 4♀♀ (1♂ 1♀, slide-mounted), same data as holotype ( NZAC) . 1♂, Pouakia Hump , 1220m, 3 XII 1975, A.K. Walker, Moss 75/211 ( NZAC) ; 1♂, Hump Plateau , 1220m, Pouakai Ra., 3 XII 1975, J.S. Dugdale, litter 75/199 ( NZAC) ; WELLINGTON ( WN) : 1♂ (slide-mounted), Balance Bridge , 18 I 1959, R. A. Cumber ( NZAC) ; 1♂, W Lk Wairarapa Res., 15 VII 1995, decayed Nothofagus, J.T. Nunn.

Etymology. This species is named for the collector of the holotype, G. W. Ramsay.

Diagnosis. S pe c i m e n s o f S. r am sa y i a r e similar in appearance to those of S. gracilis , S. pseudogracilis , S. clarkei , S. domettensis , and S. eylesi but can be distinguished by the shape of the male genitalia ( Fig. 4d ). Members of this species can be separated from those of S. egmontensis and S. stewartensis by the glossy dorsal surface of the head ( Fig. 1j–l ).

Description. Length 1.6–1.7 mm ( Fig. 1j–l ). Head: Winged male head approximately 1.46 times, wingless male 1.36 times, female 1.39 times longer than wide. Winged male eye approximately 1.06 times, wingless male 0.69 times, female 0.59 times as long as temple. Winged male antennomere 3 subquadrate, 4 longer than wide, 5–6 subquadrate, 7 transverse. Wingless male antennomere 3 subquadrate, 4 slightly longer than wide, 5–6 subquadrate, 7 slightly transverse. Female antennomere 3–4 subquadrate, 5–7 transverse. Thorax: Pronotum approximately 1.05 times longer than wide. Winged male elytra approximately 1.75 times, wingless male and female 1.26 times longer than pronotum. Winged male meso- and metaventrites trapezoidal, approximately 1.54, wingless male 1.17 times, female 1.12 times longer than pronotum. Aedeagus: Left apical lobe of male genitalia equal in width and shorter than right ( Fig. 4d ). Left paramere broader than right, setae present anteriorly ( Fig. 4d ).

Distribution. Wellington (WN), New Zealand ( Fig. 5 , black squares).

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

Figures

Fig. 4. Stenosagola species. a) S. pseudogracilis, aedeagus, dorsal view, b) S. clarkei, aedeagus, dorsal view, c) S. egmontensis, aedeagus, dorsal view, d) S. ramsayi, e) S. egmontensis, winged male head, dorsal view; f) S. egmontensis, prothorax, ventral view; g) S. egmontensis, prothoracic leg, h) S. domettensis, aedeagus, dorsal view, i) S. eylesi, aedeagus, dorsal view, j) S. stewartensis, aedeagus, dorsal view. Scale bars = 0.1 mm.

Fig. 1. Habitus of Stenosagola species, dorsal view. a) Winged male of S. gracilis, b) Wingless male of S. gracilis, c) Female of S. gracilis, d) Winged male of S. pseudogracilis, e) Wingless male of S. pseudogracilis, f) Female of S. pseudogracilis, g) Wingless male of S. clarkei, h) Wingless male of S. egmontensis, i) Female of S. egmontensis, j) Winged male of S. ramsayi, k) Wingless male of S. ramsayi, l) Female of S. ramsayi, m) Wingless male of S. domettensis, n) Female of S. domettensis, o) Wingless male of S. eylesi, p) Wingless male of S. stewartensis. Scale bars = 1 mm.

Fig. 5. Locations where Stenosagola clarkei (black triangle), Stenosagola egmontensis (Black circle), Stenosagola ramsayi (black squares), Stenosagola domettensis (white circle), Stenosagola eylesi (star), and Stenosagola stewartensis (white square) have been collected in New Zealand.