Amarophilus Larochelle and Larivière, 2022

Larochelle & Larivière, Marie-Claude, 2022, Synopsis of the tribe Amarotypini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2022 (942), pp. 1-30 : 14

Genus Amarophilus Larochelle and Larivière , new genus

Fig. 10 , 18–20 , 31–34 , 36–39

Type species. Amarophilus otagoensis new species, by present designation.

Description. Body length 5.8–7.2 mm; stout, ovate or subovate; forebody as wide as elytra. Color dark, rufopiceous or piceous black. Metallic luster absent. Dorsal surface mostly glabrous. Head. Mandibles short, strongly curved. Eyes subdepressed or slightly convex; setiferous puncture inserted medially or postmedially on inner side of each eye, distant from it. Frontal furrows moderately deep, subparallel posteriorly (very deep, convergent posteriorly in A. wanakensis ) ( Fig. 6–7 ). Submentum with six setae. Thorax. Pronotum very wide, rounded or trapezoid. Laterobasal foveae single. Pronotal base as wide as or narrower than elytral base. Legs. Moderately long. Pro- and mesotarsomeres 1–4 of both sexes moderately or strongly dilated. Elytra. Ovate. Fused along suture (hindwings vestigial). Shoulders poorly developed and rounded or well developed and obtuse. Striae present, consisting of impressed lines; stria 3 without setiferous punctures (two setiferous punctures in A. lomondensis ). Scutellar striole very long (about two-thirds of elytral length). Intervals depressed or slightly convex. Umbilicate series with 12 to 15 setiferous punctures. Aedeagus. Lateral view ( Fig. 18–20 ): strongly arcuate, slen- der, not multistriate in apical half. Dorsal view: asymmetrical (ostium of membranous area deflected to the right). Parameres: right paramere with a ventral fringe of short setae. Gonocoxites. Right and left pair distant from each other; gonocoxite 1 slender, subovate, without rows of spines; gonocoxite 2 with a single subapical seta ( Fig. 10 ).

Remarks. The generic name is masculine and derived from Amarotypus (type genus of the tribe Amarotypini ) and the Greek noun philos (friend), alluding to similarities in body shape between Amarophilus and Amarotypus . The morphological characters unifying species of Amarophilus are: body stout; pronotum rounded or trapezoid; elytra ovate; legs moderately long; frontal furrows moderately deep, subparallel posteriorly (very deep, convergent posteriorly in A. wanakensis ); aedeagus (in lateral view) slender, not multistriate in apical half; right and left pair of gonocoxites distant from each other, gonocoxite 1 subovate. The species of this genus occur in southern areas of the South Island (CO, OL), in alpine fellfields and tussock grasslands.

Figures

Figures 1–14. Amarotypini morphology. 1–4) Microsculpture. 1) Granulate. 2) Isodiametric. 3) Moderately transverse. 4) Very transverse. 5–7) Head. 5) Setiferous punctures medial, close to eye, frontal furrows (ff) subparallel posteriorly. 6) Punctures medial, distant from eye, furrows subparallel posteriorly. 7) Punctures postmedial, distant from eye, furrows convergent posteriorly. 8–10) Gonocoxites 1 (gc 1) and 2 (gc 2). 8) Amarotypus. 9) Amaroxenus. 10) Amarophilus. 11–14) Aedeagus, lateral. 11) Amarotypus edwardsii. 12) Amarotypus takaheensis new species. 13) Amarotypus fiordlandensis new species. 14) Amarotypus murchisonorum new species.

Figures 15–20. Aedeagus, lateral. 15) Amaroxenus glacialis new species. 16) Amaroxenus huttensis new species. 17) Amaroxenus kahurangiensis new species. 18) Amarophilus otagoensis new species. 19) Amarophilus lomondensis new species. 20) Amarophilus wanakensis new species.

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.

Figures 33–34. Dorsal habitus. 33) Amarophilus lomondensis new species. 34) Amarophilus wanakensis new species. Scale line = 1 mm.

Figures 36–41. Species distribution maps. 36) Amarophilus lomondensis new species. 37) Amarophilus otagoensis new species. 38) Amarophilus rotundicollis new species. 39) Amarophilus wanakensis new species. 40) Amarotypus edwardsii. 41) Amarotypus fiordlandensis new species.