Kiwiplatynus Larochelle and Larivière, 2021

Larochelle & Larivière, Marie-Claude, 2021, Synopsis of the tribe Platynini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2021 (864), pp. 1-96 : 19-20

Genus Kiwiplatynus Larochelle and Larivière , new genus

Fig. 48–49 , 91–92 , 149–150

Type species. Colpodes bidens Chaudoir, 1878 , by present designation.

Description. Body length 16.0– 19.3 mm. Color mostly dark. Metallic luster absent. Dorsal surface mostly glabrous. Forebody narrow in comparison to elytra. Head. Narrow. Mandibles moderately long. Labrum truncate or subtruncate anteriorly. Eyes strongly convex, separated from buccal fissures; two setiferous punctures on inner side of each eye. Tempora not inflated. Neck constriction deep dorsolaterally. Mentum tooth emarginate apically; two small circular foveae; two long setae. Submentum with six or eight long setae. Palpi with terminal segment truncate apically. Ligula with two setae. Paraglossae glabrous. Thorax. Pronotum cordate; a single setiferous puncture on each side (anteriorly). Prosternum glabrous apically, not compressed into a vertical ridge. Legs. Very long. Metacoxae with three or four posteroventral setae. Metafemora with three posteroventral setae. Protibiae with dorsal longitudinal groove; cleaning organ with three clip setae. Meso- and metatarsomeres 1–4 well developed, tricarinate dorsally, deeply bisulcate laterally. Metatarsomeres 4 moderately bilobed and symmetrical apically. Metatarsomeres 5 setose ventrally. Elytra. Subovate. Fused along suture (hindwings vestigial). Basal margin complete, reaching about scutellum. Shoulders narrow, rounded. Sides widest about middle. Scutellar setiferous pore visible. Scutellar striole short or moderately long. Striae complete, consisting of impressed lines. Interval 3 with a single subapical setiferous puncture or two setiferous punctures (anterior puncture absent). Umbilicate series with 22–25 setiferous punctures. Apices mucronate or obtusely triangular. Abdomen. Sternum IV: both sexes with two to four long ambulatory setae. Sterna V–VI: both sexes with three to five long apical ambulatory setae. Sternum VII (last visible sternum): male with two or four long apical ambulatory setae; female with six or eight long apical ambulatory setae. Aedeagus. Lateral view: moderately arcuate; basal lobe of basal bulb present; internal sac with scale-like sclerites. Dorsal view: moderately wide or very wide, asymmetrical (ostium of membranous area deflected to the left); basal bulb close to membranous area.

Remarks. The generic name is derived from Kiwi (the vernacular name of an ancient group of New Zealand birds; also a major national symbol) and Platynus (the type genus of the tribe Platynini ), genus masculine. The morphological characters unifying species of Kiwiplatynus are: forebody narrow in comparison to elytra; two setiferous punctures on inner side of each eye; mentum tooth emarginate apically; metatarsomeres 4 symmetrical apically; interval 3 of elytra with one or two setiferous punctures; abdominal sterna V–VI of both sexes with three to five long apical ambulatory setae; aedeagus (in lateral view) moderately arcuate; internal sac of aedeagus with scalelike sclerites. Furthermore, three morphological characters are shared between Kiwiplatynus and Kupeplatynus that set them apart from Ctenognathus and Tuiplatynus : cleaning organ of protibiae with three clip setae; neck constriction deep dorsolaterally; basal bulb of aedeagus close to membranous area. Kiwiplatynus species occur mostly in northern areas of the North Island.

Figures

Figures 45–48. Dorsal habitus. 45) Prosphodrus waimana new species. 46) P. occultus. 47) Maoriplatynus marrisi new species. 48) Kiwiplatynus bidens. Scale line = 1 mm.

Figures 49–52. Dorsal habitus. 49) Kiwiplatynus taranaki new species. 50) Kupeplatynus sulcitarsis. 51) K. crenatus. 52) K. lucifugus. Scale line = 1 mm.

Figures 87–93. Aedeagus, lateral. 87) Prosphodrus sirvidi new species.88) P.waimana new species.89) P. occultus. 90) Maoriplatynus marrisi new species. 91) Kiwiplatynus bidens. 92) K. taranaki new species. 93) Kupeplatynus sulcitarsis.

Figures 148–153. Species distribution maps. 148) Ctenognathus xanthomelus. 149) Kiwiplatynus bidens. 150) K. taranaki new species. 151) Kupeplatynus crenatus. 152) K. lucifugus. 153) K. sulcitarsis.