Amaroxenus Larochelle & Larivière, 2022: 10

Liebherr, James K., Roig-Juñent, Sergio & Will, Kipling W., 2024, Phylogenetic analysis of the circum-Antarctic Subfamily Migadopinae (Coleoptera, Carabidae) and assessment of the trans-Tasman Amarotypus clade, Deutsche Entomologische Zeitschrift 71 (2), pp. 319-338 : 319-338

Amaroxenus Larochelle & Larivière, 2022: 10 .

Type species.

Amaroxenus kahurangiensis Larochelle & Larivière, 2022: 10 (by original designation).

Diagnosis.

Within Migadopini exhibiting an elongate parascutellar stria that extends beyond the elytral mid-length; mentum medially bidentate, the mentum tooth notched medially; submentum with six setae; pronotum cordate, with basal width subequal to apical width, the lateral margin sinuate anteriad distinct hind angle; pronotal anterior marginal bead usually incomplete medially — in A. embersoni sp. nov. polymorphically complete or incomplete medially — always present laterally; metathoracic wings vestigial; pro- and mesothoracic legs with tarsomeres 1–4 laterally expanded in both sexes; female gonocoxite unipartite, the narrower apical portion indistinctly defined relative to the equally sclerotized, broader basal portion, no microtrichia — or a single small seta — situated along the inner margin of the gonocoxite at the point of apical narrowing (Fig. 3 B, C ).

Diversity.

Four species were described by Larochelle and Larivière (2022), to which we add two new species, with the six species determinable using the following key.

Figures

Figure 3. Female left gonocoxite, ventral view. A. Amarotypus edwardsii; B. Amaroxenus embersoni; C. Amaroxenus marrisi; D. Migadopiella octoguttata; E. Amarophilus otagoensis.