Bembidion (Zeplataphus) maorinum maorinum Bates, 1867

Larochelle, André, Zeperyphodes, Broun & Larivière, Marie-Claude, 2015, Synopsis of the genus Bembidion Latreille in New Zealand (Coleoptera: Carabidae: Bembidiini), Insecta Mundi 2015 (415), pp. 1-78 : 25-26

Bembidion (Zeplataphus) maorinum maorinum Bates, 1867

Fig. 15 , 49 , 89

Bembidium (Peryphus) maorinum Bates, 1867: 56 . Type locality: Province of Canterbury, South Island ( Bates, 1867: 56); New Zealand ( Lindroth 1976: 171, lectotype designated).

Other synonymy as in Larochelle and Larivière (2001: 85).

Description. Body length 5.8–8.0 mm. Black; antennae and legs black (antennal segment 1 rufous underneath and tibiae often piceous). Microsculpture of elytra feeble on intervals 1–5, strong on intervals 6–7, irregularly isodiametric, somewhat stronger in female. Very shiny, with moderately strong metallic lustre (aeneous or greenish, rarely bluish). Thorax. Pronotum moderately convex, much wider than head (contrary to other Zeplataphus species); thin raised lateral bead incomplete, obsolete near posterolateral angles; sides strongly rounded anteriorly, moderately sinuate posteriorly; posterolateral angles subrectangular, somewhat sharp at tip; laterobasal foveae moderately deep, oblong, short, not reaching basal margin. Elytra. Slightly convex, short. Scutellar striole consisting of a row of punctures. Striae 2–6 complete, deep, coarsely punctate; stria 7 strong, complete although slightly evanescent apically, coarsely punctate. Intervals depressed, becoming slightly convex posteriorly; interval 3 with three or four discal setiferous punctures. Apical striole shallow, connected to stria 5. Sutural apices rounded. Abdomen. Last visible sternum (sternum VII) of female with four long ambulatory setae only. Aedeagus. Lateral view ( Fig. 49 ): moderately arcuate; base moderately concave dorsally; middle moderately convex dorsally, strongly concave ventrally; apex triangular, with extreme tip moderately wide and long.

Material examined. 1,011 specimens ( CMNH, JNNZ, MONZ, NZAC).

Geographic distribution ( Fig. 89 ). South Island: BR, CO, DN, FD, KA, MB, MC, MK, NC, NN, OL, SC, SD, SL, WD.

Ecology. Lowland, montane. Epigean. Banks and beds of rivers and brooks, at a certain distance (0–2 m) from water. Open ground; wet, gravelly, bare soil. Nocturnal; hides during the day deep among gravel and under stones as well as around their edges. Gregarious.

Biology. Seasonality: September, November–March, June. Tenerals: January–March. Occasionally infested with fungi (Laboulbeniales). Defence mechanism: when alarmed, the adult escapes by running.

Dispersal power. Macropterous, probably capable of flight. Fast runner. Vagility likely favoured by flight capacity.

Collecting techniques. Raking the soil; turning stones.

Reference. Larochelle and Larivière 2001: 85 (catalogue; biology, dispersal power, ecology, geographic distribution, reference).

Figures

Figures 13–16. Dorsal habitus. 13) Bembidion granuliferum. 14) B. townsendi. 15) B. maorinum maorinum. 16) B. m. levatum. Scale line = 1 mm.

Figures 45–52. Aedeagi, lateral. 45) Bembidion brullei. 46) B. rotundicolle. 47) B. tairuense. 48) B. granuliferum. 49) B. maorinum maorinum. 50) B. charile. 51) B. dehiscens. 52) B. actuarium.

Figures 89–94. Species distribution maps. 89) Bembidion maorinum maorinum. 90) B. musae. 91) B. nesophilum. 92) B. orbiferum. 93) B. parviceps. 94) B. puponga new species.