Genera

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 : 11

Key to Genera

1. With complete suture between abdominal ventrites 1 and 2; overall body length large for family (length 2.35–3.18 mm); elongate, total body length 3× elytral width; eyes without anterior emargination; Figs 2A,B .......... Scraptogetus Broun, 1893

- With incomplete suture between abdominal ventrites 1 and 2; overall body length average to small for family (length 1.35–2.11 mm); not elongate, total body length 2× elytral width; eyes with slight to moderate anterior emargination............... 2

2. Pronotum transverse; head width subequal to pronotal width; eyes with slight anterior emargination, eyes reniform; apex of pedicel subequal in width to base of antennomere 3 ( Fig. 6B ); Fig. 2C ............................. Transrenus gen. n.

- Pronotum subquadrate; head width greater than pronotal width; eyes with distinct anterior emargination, eyes subcircular; apex of pedicel smaller in width than base of antennomere 3 ( Fig. 8B , 13B )........................................... 3

3. Metatibial apex not expanded ( Fig. 9E ); metafemur with ctenidium and row of sclerotized ridges present on hind face ( Fig. 9D, 9F ); antennomere 3 subequal in length and width to antennomere 4; Fig. 2D ....................... Pseudozena gen. n.

- Metatibial apex expanded ( Fig. 13E ); metafemur with countersunk excavation with overlying setae present on hind face ( Figs 20 A–20J); antennomere 3 shorter and thinner compared to antennomere 4 ( Figs 8B , 13B ); Figs 11 A–11E, 12A–12E.............................................................................................. Zenascus gen. n.

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 6A–G. Transrenus thulater, gen n. sp. n., scanning electron micrographs. (A) pronotum; (B) antenna; (C) scutellum; (D) proleg; (E) elytral integument close-up; (F) elytron; (G) mesoventral and metaventral processes.

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.

FIGURES 9A–G. Pseudozena denticulata gen n. sp. n., scanning electron micrographs. (A) metaventrite; (B) metacoxa; (C) midleg (D) metafemur; (E) metatibia; (F) close-up of metafemur ventro-posterior margin; (G) abdomen.

FIGURES 11A–E. Dorsal habitus images. (A) Zenascus coloratus (Broun), male; (B) Zenascus obscurus (Broun), male; (C) Zenascus aurum, sp. n., female; (D) Zenascus nitidus (Broun), male; (E) Zenascus elenae, sp. n., male. Scale bars = 1.0 mm.

FIGURES 13A–H. Zenascus obscurus, scanning electron micrographs. (A) head, frontal view; (B) antenna; (C) pronotum (D) proleg; (E) metatibia; (F) metaventrite; (G) abdomen; (H) tergite VII.

FIGURES 20A–J. Scanning electron microscope images, ventral view of metafemora for Zenascus species. (A) Z. coloratus, male; (B) Z. obscurus, male; (C) Z. aurum, sp. n., male; (D) Z. nitidus, female; (E) Z. elenae, sp. n., male; (F) Z. antennalis, female; (G) Z. xenarthrus, male; (H) Z. roberti, sp. n., male; (I) Z. luniger, male; (J) Z. incensum, sp. n., male. Scale bars = 60μm.