Oopterus collaris Broun, 1893

Larochelle, Larivière, Marie-Claude, Larochelle & Larivière, 2017, Synopsis of the tribe Zolini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2017 (594), pp. 1-110 : 30-31

Oopterus collaris Broun, 1893

Fig. 33 , 80 , 123

Oöpterus collaris Broun, 1893: 1002 . Holotype: male (BMNH) labeled: “Type (circular red-bordered label; typed) / [male symbol] (hand-written) / 1797. (hand-written) / [NN] Mount Arthur. (hand-written) / Zolus . (hand-written) / New Zeal. Broun Coll. Brit. Mus. 1922–482. (white label with red horizontal line; typed) / Oöpterus collaris [male symbol] (hand-written).”

Pseudoopterus collaris: Csiki 1928: 225 .

Oopterus collaris: Hudson 1934: 177 .

Description. Body length 5.8–6.4 mm. Head, pronotum, elytra, and abdomen mostly dark brown; head darker medially; abdomen reddish laterally and apically; antennae, palpi, and legs reddish. Microsculpture obsolete and isodiametric on head, feeble and moderately transverse on pronotum, strong and very transverse (with microlines) on elytra. Iridescence absent on head and pronotum, strong on elytra. Very shiny, without metallic luster. Head. Labrum moderately transverse, slightly emarginate anteriorly. Antennae submoniliform, moderately long: segment 1 (scape) short, stout, about 1.5x longer than its maximum width. Frontal furrows wide, deep, convergent. Eyes moderately convex; a single setiferous puncture on inner side of each eye (posteriorly). Tempora not inflated. Mentum: medial tooth entire, acute apically, moderately shorter than lateral lobes. Paraglossae membranous, prominent, about as long as ligula. Thorax. Pronotum moderately convex, coarsely punctate across base, wrinkled discally, subquadrate, widest about middle; apex truncate; anterolateral angles poorly developed, obtusely rounded; anterior bead incomplete, obsolete medially; sides moderately rounded, slightly sinuate posteriorly; lateral grooves moderately to very deep, very long (as long as pronotum); a single setiferous puncture on each side (posteriorly); posterolateral angles rectangular; posterolateral carinae sharp, very long (about as long as adjoining foveae); laterobasal foveae well defined, coarsely punctate, moderately deep and wide, oblong, prolonged forward, simple; posterior bead absent; base emarginate, about as wide as pronotal apex and elytral base. Legs. Moderately long. Elytra. Moderately convex, subovate, widest about middle. Basal margin incomplete, reaching about stria 4. Shoulders obtuse. Sides moderately rounded. Scutellar striole present. Striae incomplete; striae 1–3 shallow, finely punctate; striae 4–7 obsolete, impunctate; stria 3 with three setiferous punctures. Recurrent stria long, sharp, directed apically toward stria 6. Subapical seta present. Intervals subdepressed. Sutural apices obtusely rounded. Abdomen. Last visible sternum (sternum VII): male with two apical ambulatory setae; female with four apical ambulatory setae. Aedeagus. Lateral view ( Fig. 80 ): strongly arcuate, not widened in apical half; base moderately biconvex dorsally; middle subparallel, slightly convex dorsally, moderately convex ventrally, with dorsal membranous area moderately wide and very long; apex triangular, slightly concave dorsally, straight ventrally, with extreme tip wide and long. Dorsal view: narrow, asymmetrical (ostium of membranous area deflected to right); apex straight; basal orifice narrow, closed anteriorly, close to membranous area. Parameres with three apical setae.

Material examined. 73 specimens ( BMNH, JNNZ, LUNZ, NZAC).

Geographic distribution ( Fig. 123 ). South Island: BR, NN.

Ecology. Lowland, montane, subalpine. Epigean-arboreal. Wet forests (beech). Shaded ground. Nocturnal; active at night on trees and logs; hides during the day under loose bark of trees, and in moss growing on logs and trees. Gregarious.

Biology. Seasonality: October–May. Tenerals: December (NN). Predacious (based on mouthpart morphology).

Dispersal power. Subapterous (incapable of flight). Moderate runner. Regular climber on trees and logs.

Collecting techniques. Lifting loose bark of trees; sifting moss.

References. Larochelle and Larivière 2001: 73 (catalogue; biology, dispersal power, ecology, geographic distribution, references), 2016: 20 (list).

Figures

Figures 31–34. Dorsal habitus. 31) Oopterus fulvipes. 32) O. sobrinus. 33) O. collaris. 34) O. laeviventris. Scale line = 1 mm.

Figures 74–81. Aedeagi, lateral. 74) Oopterus discoideus new species. 75) O. marrisi new species. 76) O. lewisi. 77) O. patulus. 78) O. fulvipes. 79) O. sobrinus. 80) O. collaris. 81) O. laeviventris.

Figures 118–123. Species distribution maps. 118) Maungazolus septempunctatus new species. 119) M. tararuaensis new species. 120) Oopterus anglemensis new species. 121) O. arthurensis new species. 122) O. clivinoides. 123) O. collaris.