Oopterus quadripunctatus, Larochelle & Larivière & Larochelle & Larivière, 2017

Larochelle, Larivière, Marie-Claude, Larochelle & Larivière, 2017, Synopsis of the tribe Zolini in New Zealand (Coleoptera: Carabidae), Insecta Mundi 2017 (594), pp. 1-110 : 16-17

Key to species of Oopterus

Remarks. The only character distinguishing the genera Oopterus and Zolus is the shape of the right paramere of the male aedeagus. To facilitate identification based on external morphology, Zolus species are inserted into the Oopterus key, with cross-references to the Zolus key.

1.

— Pronotum without setiferous punctures on each side ................................................................. 2 Pronotum with setiferous punctures on each side .................................................................... 11 2(1).

— Setiferous punctures absent on inner side of each eye; Fig. 24 . [Body length 4.9–5.5 mm; microsculpture absent; basal margin of elytra incomplete, reaching about stria 4; southwestern South Island (FD, OL, SL)] ............................................................... Oopterus suavis Broun

Setiferous punctures present on inner side of each eye .............................................................. 3 3(2).

—

Two setiferous punctures on inner side of each eye; Fig. 25 . [Body length 5.9–6.4 mm; basal margin of elytra complete, reaching about scutellum; South Island (MC, Banks Peninsula)]

....................................................................................................... Oopterus laevicollis Bates A single setiferous puncture on inner side of each eye (posteriorly) .......................................... 4

4(3).

— Basal margin of elytra complete, reaching about scutellum ...................................................... 5 Basal margin of elytra incomplete, reaching about stria 4 ........................................................ 8

5(4).

— Elytral microsculpture present .................................................................................................... 6 Elytral microsculpture absent ...................................................................................................... 7 6(5)

—

Rather small, body length 4.5–5.4 mm; interval 3 with four foveate setiferous punctures; Fig. 26 . [Southwestern South Island (FD, OL)] ........ Oopterus quadripunctatus new species

Larger, body length 7.0– 9.2 mm; interval 3 or stria 3 with three non-foveate setiferous punctures; Fig. 20–23 . [North and South Islands] ....................................................................................... ............. Zolus carinatus , Z. kauriensis , Z. helmsi , Z. wongi ; see Key to species of Zolus

7(5).

Rather small, body length 3.4–4.2 mm; head, pronotum, and elytra mostly testaceous; eyes subdepressed; tempora moderately inflated; pronotum strongly convex, sides strongly rounded, not sinuate posteriorly, laterobasal foveae subrectangular; Fig. 27 . [Southwestern South Island (FD)] .................................................................................. Oopterus discoideus new species

—

Larger, body length 5.7–6.6 mm; head, pronotum, and elytra mostly reddish black; eyes moderately convex; tempora not inflated; pronotum moderately convex, sides moderately rounded, slightly sinuate posteriorly, laterobasal foveae oblong; Fig. 28 . [Southwestern South Island (FD)] ........................................................................... Oopterus marrisi new species

8(4).

—

Elytra without microsculpture; elytral striae mostly replaced by rows of coarse punctures; Fig.

29. [Body length 4.1–4.9 mm; western South Island (NN, BR, WD)] .......................................

........................................................................................................... Oopterus lewisi (Broun) Elytra with microsculpture; elytral striae present, consisting of mostly obsolete lines ........... 9 9(8).

—

Rather large, body length 5.4–6.2 mm; pronotum with posterolateral carinae blunt; elytra ovate, microsculpture moderately transverse, sides strongly rounded; Fig. 30 . [Southern South Island (SC to FD–SL) and Stewart Island] ............................................ Oopterus patulus (Broun)

Smaller, body length 4.6–5.0 mm; pronotum with posterolateral carinae sharp; elytra subovate, microsculpture very transverse (with microlines), sides moderately rounded. [North Island] ................................................................................................................................................... 10

10(9).

—

Pronotum strongly transverse, widest before middle, sides moderately sinuate posteriorly, posterolateral angles rectangular, laterobasal foveae coarsely punctate; elytral shoulders moderately rounded; Fig. 31 . [Body length 4.6–5.0 mm; North Island (ND to WN–WA)] ...... .......................................................................................................... Oopterus fulvipes Broun

Pronotum slightly transverse, widest about middle, sides not sinuate, posterolateral angles obtuse, laterobasal foveae impunctate; elytral shoulders obtuse; Fig. 32 . [Body length 5.1–6.0 mm; North Island (ND to WN–WA)] ........................................... Oopterus sobrinus Broun

11(1).

— Pronotum with a single setiferous puncture on each side ........................................................ 12 Pronotum with two setiferous punctures on each side ............................................................. 19

Figures

Figures 23–26. Dorsal habitus. 23) Zolus wongi new species. 24) Oopterus suavis. 25) O. laevicollis. 26) O. quadripunctatus new species. Scale line = 1 mm.

Figures 19–22. Dorsal habitus. 19) Zolus subopacus. 20) Z. kauriensis new species, teneral. 21) Z. carinatus. 22) Z. helmsi. Scale line = 1 mm.

Figures 27–30. Dorsal habitus. 27) Oopterus discoideus new species. 28) O. marrisi new species. 29) O. lewisi. 30) O. patulus. Scale line = 1 mm.

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