Sagola nunni 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 : 36-37

Sagola nunni Park and Carlton , new species

( Figs. 15e , 16e , 18 )

Type Material. Holotype. NEW ZEALAND: Northland: 1♂ ( NZAC), aedeagus dissected and mounted in balsam on a clear plastic card, “ NEW ZEALAND ND Whangae Stm Kawakawa, 14.11.94”, “ HOLOTYPE Sagola nunni Park and Carlton 2013 ” The original label does not mention who collected this specimen, but the collector is J. T. Nunn . Paratypes (2 males). NEW ZEALAND: Northland : 1♂ ( NZAC), Waipoua SF, Four Sisters, 4 II 1975, S.E. Nicols, litter 75/93 ; 1♂ ( AMNZ), Waima Forest , Hauturu Tr., 220–360m, 25 III 1993, J.W. Early, kauribroadleaf-nikau forest, screen sweep .

Etymology. This species is named for the collector of the holotype, John T. Nunn, who also provided many valuable specimens for this study.

Diagnosis. This species can be distinguished from the other species of the baiknami speciesgroup by the following combination of characters: smaller body, length 2.5–2.8 mm; male head bluntly triangular, widest across eyes, ventral surface of head with short carina from hind-point of eyes; male mid-femur weakly depressed at base and mid-tibia bent; shape of antennomeres and genitalia unique to species.

Description of Male. Length 2.5–2.8 mm. Body brown, antenna, elytra, legs, and maxillary palpi paler ( Fig. 15e ). Head: As long as wide, widest across eyes, ventrally with short carina from hind point of eyes, as long as eye ( Fig. 15e ). Antennomere 1 approximately 2 times longer than wide, 2–3 subquadrate, 4 elongate, 5–9 longer than wide, 9–10 subquadrate. Frontal sulcus reaching midpoint of eye from end of frontal rostral lobes. Anterior frontal fovea round. Posterior frontal fovea elongate. Eye large and prominent, onethird length of temple. Thorax: Prosternum as long as wide, widest at midpoint. Elytra rectangular ( Fig. 15e ). Hind wings well-developed. Meso-and metathorax trapezoidal, longer than wide. Male mid-femur weakly depressed at base. Male mid-tibia bent. Abdomen: Tergite IV with a pair of transverse patches of microtrichia reaching middle. Aedeagus: Median lobe elongate with acute minor lobe at base ( Fig. 16e ). Apical lobe of genitalia umbrella-shaped ( Fig. 16e ). Phallobase of median lobe asymmetrical and triangular. Parameres asymmetrical, right paramere with minor lobe apically ( Fig. 16e ).

Distribution. Northland ( Fig. 18 : black circles).

Habitat. Specimens of this species were collected by sweeping and sifting leaf litter in kauri, broadleaf, and nikau forests.

Figures

Fig. 15. Habitus of Sagola species in the baiknami species-group, dorsal views. a) S. baiknami, b) S. watti,

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