Amaroxenus, Larochelle and Lariviere E, 2022

Larochelle & Larivière, Marie-Claude, 2022, Synopsis of the tribe Amarotypini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2022 (942), pp. 1-30 : 10-11

Key to species of Amaroxenus

1. Elytral stria 3 with poorly developed, fine setiferous punctures. Pronotum subcordate; sides moderately rounded; laterobasal foveae not separated from lateral depressions by a carina. Fig. 27–28....... 2

— Elytral stria 3 with well developed, coarse setiferous punctures. Pronotum cordate; sides strongly rounded; laterobasal foveae separated from lateral depressions by a carina. Fig. 29–30.......... 3

2(1). Dorsal body dull brown; microsculpture strong. Eyes subdepressed. Pro- and mesotarsomeres 1–4 of both sexes strongly dilated. Pronotum moderately convex; posterolateral angles rectangular; laterobasal foveae very wide, very deep, reaching lateral depressions. Elytra moderately convex; striae deep, coarsely punctate; intervals depressed. Fig. 27 . [Body length 6.5–6.8 mm; western South Island (WD)].......................... Amaroxenus glacialis Larochelle and Larivière , new species

— Dorsal body shiny rufopiceous; microsculpture weak. Eyes slightly convex. Pro- and mesotarsomeres 1–4 of females moderately dilated (males unknown). Pronotum strongly convex; posterolateral angles obtuse; laterobasal foveae moderately wide, shallow, separated from lateral depressions by a pronounced convexity. Elytra strongly convex; striae shallow, finely punctate; intervals slightly convex. Fig. 28 . [Body length 6.5–6.6 mm; northeastern South Island (MB)]................................................... Amaroxenus arnaudensis Larochelle and Larivière , new species

3(1). Antennal segments 1–2 rufotestaceous, 3–11 rufopiceous. Pronotum strongly convex; sides not sinuate posteriorly; posterolateral angles rectangular; laterobasal foveae shallow. Elytra dull, strongly convex; striae shallow, finely punctate. Fig. 29 . [Body length 6.2–6.5 mm; southeastern South Island]............................... Amaroxenus huttensis Larochelle and Larivière , new species

— Antennae rufopiceous. Pronotum moderately convex; sides moderately sinuate posteriorly; posterolateral angles acute, slightly projected laterally; laterobasal foveae very deep. Elytra shiny, moderately convex; striae deep, coarsely punctate. Fig. 30 . [Body length 5.3–6.6 mm; northwestern South Island (NN)].................... Amaroxenus kahurangiensis Larochelle and Larivière , new species

Figures

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.

Figures 29–32. Dorsal habitus. 29) Amaroxenus huttensis new species. 30) Amaroxenus kahurangiensis new species. 31) Amarophilus rotundicollis new species (holotype). 32) Amarophilus otagoensis new species. Scale line = 1 mm.