Pseudozena denticulata, Grzymala & Leschen, 2020

Grzymala, Traci L. & Leschen, Richard A. B., 2020, Sexual Dimorphism of New Zealand Puppet Beetles (Aderidae, Coleoptera, Tenebrionoidea): Systematic Revision, Description of Three New Genera, and Phylogeny for Zenascus, gen. n., Zootaxa 4889 (1), pp. 1-59 : 24-27

Pseudozena denticulata sp. n.

Figs 2D , 8 A–8G, 9A–9G, 10C, 26C

Etymology. The specific epithet is in reference to the morphological character of the sclerotized ridges present on the metafemora. The name is formed from the Latin denticulatus (with small teeth).

Description. Length 1.60–1.67 mm. Body about 2.3× longer than wide. Dorsal surface piceous to brunneous with contrasting testaceous antennae, mouthparts, and legs. Dorsal vestiture biseriate, clothed with thin, decumbent pubescence arising anterad of each puncture, about 2× length of puncture, with 2–3 additional thin, slightly shorter, suberect setae between each puncture pair. Ventral vestiture with same type of biseriate pubescence as dorsum. Head, HW 0.44–0.45 mm, HL 0.18–0.21 mm; surface with numerous deep, elongate punctures, unevenly spaced on vertex, separated by an average of the length of two punctures, present from basal margin to antennal insertions, absent from integument between antennal insertions. Antennae ( Fig. 8B ) with scape rounded, slightly longer than pedicel; pedicel subglobular, apex wider than base of antennomere 3; antennomeres 3–10 subserrate; antennomere 3 longer than pedicel, subequal in length and width to antennomere 4; antennomeres 4–7 subequal in length; antennomere 8 shorter than 7, antennomere 9 slightly shorter than 8, antennomeres 9 and 10 subequal; antennomere 11 2× longer than 10; antennomeres 3–11 covered in moderately dense, suberect pubescence, without additional pilosity. Pronotum, PW 0.36–0.38 mm, PL 0.32–0.33 mm. Elytral length 1.8–1.9× elytral width and 4.0–4.2× pronotal length.

Females. Length 1.67–1.69 mm, HW 0.42–0.45 mm, HL 0.17–0.21 mm, PW 0.36–0.38 mm, PL 0.32–0.33 mm, EW 0.74–0.78 mm, EL 1.35–1.36 mm. Antennae with scape rounded, slightly longer than pedicel; pedicel subglobular, apex wider than base of antennomere 3; antennomeres 3–5 subequal in length and width; antennomere 6 subequal in width and slightly shorter than antennomere 5; antennomere 7 subequal in width and slightly shorter than antennomere 6; antennomere 8 subequal in width and slightly shorter than antennomere 9; antennomeres 8–10 subequal in length and width; antennomere 11 subequal in width and about 2× length of antennomere 10.

Natural History. This is a relatively uncommon South Island species. Specimens have been collected in forests, mostly Nothofagus , and by sweeping, with one specimen collected at lights.

Distribution. South Island: Nelson (NN), Buller (BR), North Canterbury (NC), Dunedin (DN), Southland (SL), and Stewart Island (SI).

Type material examined. Holotype. Male ( LUNZ), labeled: “ NEW ZEALAND, SL / Catlins SF / Hunter Hills / 2.viii.1982 / C.A. Muir & R.E. Emberson ” . Paratypes (12).

South Island . NN: Abel Tasman NP, Harwood Trk , 720m, 02/03/1981, sweeping moss, ferns, on forest floor (1, LUNZ). BR: Nelson Lakes N.P ., Lake Rotoiti , 19/12/1983, L. Masner (2, CMNC); same, but Nothofagus & Griselinia forest , (2, CMNC); Mt Misery , Ecology Div. Station , 550m, 24/01/1977, to light, J.S. Dugdale (1, NZAC). NC: Arthurs Pass NP , Klondyke Cnr , 700m, 21/01/1981, sweeping Nothofagus seedlings on forest floor, J.W. Early (1, LUNZ). DN: Cloud Forest of Leith , 01/01/2003, 45 (2, NZAC). SL: Owaka, 13–20/01/1978, Malaise trap, Nothofagus, S. Peck & J. Peck (1, NZAC); Owaka, Table Hill Res. , 13–20/01/1978, Malaise trap, S. Peck & J. Peck (1, CMNC). SI: Christmas Village , 6–7.ii.1991, J.W. Early, swept in podocarp hardwood forest (1, LUNZ).

Figures

FIGURES 2A–D. Dorsal habitus images. (A) Scraptogetus anthracinus Broun, 1893; (B) Scraptogetus arboreus (Broun, 1914); (C) Transrenus thulater, gen. n. sp. n.(D) Pseudozena denticulata gen. n. sp. n. Scale bars = 1.0 mm.

FIGURES 8A–G. Pseudozena denticulata gen n. sp. n., scanning electron micrographs. (A) pronotum; (B) antenna; (C) proleg; (D) scutellum; (E) elytron; (F) elytral integument close-up; (G) mesoventral and metaventral processes.