Amarotypus, Bates, 1872

Larochelle & Larivière, Marie-Claude, 2022, Synopsis of the tribe Amarotypini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2022 (942), pp. 1-30 : 4-5

Key to species of Amarotypus

1. Body ( Fig. 21–24 ) ovate. Pronotum trapezoid, widest basally.................................... 2

— Body ( Fig. 25–26 ) subovate. Pronotum subrectangular, widest about middle...................... 5

2(1). Metallic luster present (aeneous). Eyes moderately convex. Posterolateral angles of pronotum subrectangular. Elytra oblong; sides slightly rounded; striae replaced by rows of coarse punctures; intervals unevenly surfaced. Fig. 21 . [Body length 6.0–7.0 mm; row 3 of elytra with three setiferous punctures; North Island, South Island and Stewart Island]................... Amarotypus edwardsii Bates

— Metallic luster absent. Eyes slightly convex. Posterolateral angles of pronotum acute, projected laterally. Elytra ovate; sides strongly rounded; striae present; intervals evenly surfaced................. 3

3(2). Sides of pronotum and elytra widely testaceous, strongly contrasting with rufopiceous background. Antennae rufotestaceous, with segments 3–4 rufopiceous. Pronotum strongly convex; sides not sinuate posteriorly. Fig. 22 . [Smaller, body length 4.6 mm; stria 3 of elytra with a single setiferous puncture; South Island (southern WD)]........................................................................................ Amarotypus simoninensis Larochelle and Larivière , new species

— Sides of pronotum and elytra more uniformly colored, not contrasting with background. Antennae differently colored. Pronotum moderately convex; sides moderately sinuate posteriorly........... 4

4(3). Dorsal body piceous black. Antennal segments 1–4 rufotestaceous, 5–11 piceous black. Elytra with isodiametric microsculpture; striae deep and coarsely punctate, stria 3 with three setiferous punctures. Fig. 23 . [Body length 5.7 mm; South Island (FD)]........................................................................ Amarotypus takaheensis Larochelle and Larivière , new species

— Dorsal body rufotestaceous. Antennae rufotestaceous. Elytra with moderately transverse microsculpture; striae shallow and finely punctate, stria 3 with two setiferous punctures. Fig. 24 . [Body length 6.7 mm; South Island (western NN)].................................................................................. Amarotypus glasgowensis Larochelle and Larivière , new species

5(1). Metallic luster present (aeneous). Antennal segment 1 rufotestaceous, segments 2–11 rufopiceous. Pronotum strongly convex; sides not sinuate posteriorly; posterolateral angles rectangular. Elytra ovate; striae replaced by rows of punctures, row 3 with three setiferous punctures. Fig. 25 . [Small body, length 5.3–6.6 mm; South Island (southern WD, southwestern FD)]..................................................... Amarotypus fiordlandensis Larochelle and Larivière , new species

— Metallic luster absent. Antennae rufotestaceous. Pronotum moderately convex; sides slightly sinuate posteriorly; posterolateral angles obtuse. Elytra oblong; striae present, stria 3 with four setiferous punctures. Fig. 26 . [Larger body, length 6.6–6.8; South Island (eastern central FD)]...................................... Amarotypus murchisonorum Larochelle and Larivière , new species

Figures

Figures 21–24. Dorsal habitus. 21) Amarotypus edwardsii. 22) Amarotypus simoninensis new species (holotype). 23) Amarotypus takaheensis new species (paratype). 24) Amarotypus glasgowensis new species (holotype). Scale line = 1 mm.

Figures 25–28. Dorsal habitus. 25) Amarotypus fiordlandensis new species. 26) Amarotypus murchisonorum new species. 27) Amaroxenus glacialis new species. 28) Amaroxenus arnaudensis new species (holotype). Scale line = 1 mm.