Notagonum, Darlington, 1952

Larochelle & Larivière, Marie-Claude, 2021, Synopsis of the tribe Platynini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2021 (864), pp. 1-96 : 8

Key to species of Notagonum

1. Microsculpture of elytra moderately transverse ( Fig. 3 )........................................ 2

— Microsculpture of elytra isodiametric ( Fig. 2 )................................................ 3

2(1). Pronotum subquadrate, apex subtruncate, anterolateral angles poorly developed, sides moderately rounded, not sinuate posteriorly, lateral depressions narrow anteriorly and gradually widened posteriorly; elytra pear-shaped, shoulders moderately rounded, sides strongly rounded; Fig. 38 . [Body length 7.3–8.2 mm; hindwings about half developed; Chatham Islands ( CH)]......................................................................... Notagonum chathamense (Broun)

— Pronotum moderately cordate, apex moderately emarginate, anterolateral angles well developed, sides strongly rounded and subangulate anteriorly, slightly sinuate posteriorly, lateral depressions moderately wide throughout; elytra oblong, shoulders strongly rounded, sides slightly rounded; Fig. 39 . [Body length 7.8–8.6 mm; hindwings fully developed; North Island (ND to WN–WA)]...................................................................... Notagonum lawsoni (Bates)

3(1). Smaller, body length 7.3–8.4 mm; head, pronotum, and elytra mostly black; antennae black (base of segments reddish); legs black; pronotum rectangular, widest about middle, lateral depressions narrow anteriorly and gradually widened posteriorly; legs moderately long; elytral striae finely punctate; Fig. 40 . [South Island (SD to FD–SL) and Stewart Island].............. Notagonum feredayi (Bates)

— Larger, body length 8.6–10.4 mm; head greenish black, pronotum and elytra mostly greenish brown; antennal segments 1–3 yellowish, 4–11 brownish; legs yellowish; pronotum slightly cordate, widest before middle, lateral depressions wide throughout; legs very long; elytral striae impunctate; Fig. 41 . [North Island, South Island, and offshore islands ( CH, TH)].. Notagonum submetallicum (White)

Figures

Figures 1–13. Microsculpture: 1) granulate; 2) isodiametric; 3) moderately transverse; 4) very transverse. Neck constriction, dorsolateral view: 5) deep; 6) shallow; 7) absent. Eye and buccal fissure, lateral view: 8) touching; 9) separated. Terminal segment of palpi: 10) obtuse apically; 11) truncate. Paraglossae: 12) pubescent; 13) glabrous.

Figures 37–40. Dorsal habitus. 37) Platynus macropterus. 38) Notagonum chathamense. 39) N. lawsoni. 40) N. feredayi. Scale line = 1 mm.

Figures 41–44. Dorsal habitus. 41) Notagonum submetallicum. 42) Prosphodrus mangamuka new species. 43) P. waltoni. 44) P. sirvidi new species. Scale line = 1 mm.