Bembidion (Zeactedium) musae Broun, 1882

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 : 30-31

Bembidion (Zeactedium) musae Broun, 1882

Fig. 20 , 53 , 90

Bembidium musae Broun, 1882: 225 . Type locality: Mt Arthur, NN.

Other synonymy as in Larochelle and Larivière (2001: 81).

Description. Body length 6.2–7.6 mm. Head and pronotum black; elytra yellowish with a variegated dark color pattern; antennae and legs yellowish (antennal segments 5–11 and femora infuscated). Microsculpture strong, very transverse on head and pronotum; irregularly isodiametric to slightly transverse with a tendency to form transverse meshes on elytra in male; stronger, granulate, irregularly isodiametric on elytra in female. Very shiny, with metallic lustre on forebody and dark parts of elytra (aeneous or greenish). Head. Antennae moderately long (reaching about elytral shoulders). Thorax. Pronotum moderately convex; sides moderately rounded anteriorly, strongly sinuate posteriorly; basal constriction moderately short; posterolateral angles acute, moderately projected laterally, rounded at tip; laterobasal foveae shallow, linear, short, not reaching basal margin. Elytra. Moderately convex. Sides parallel about middle. Striae shallow throughout, finely punctate; stria 7 strong, finely punctate. Apical striole shallow, connected to stria 7. Aedeagus. Lateral view ( Fig. 53 ): moderately arcuate, strongly widened in apical half; base strongly convex dorsally; middle strongly convex dorsally, slightly convex ventrally with dorsal membranous area wide and short; apex subtriangular, slightly concave dorsally, straight ventrally, with extreme tip wide and long.

Material examined. 187 specimens ( CMNH, JNNZ, MONZ, NZAC).

Geographic distribution ( Fig. 90 ). North Island: HB, RI, WI, WN, WO. South Island: CO, DN, FD, KA, MB, MC, NC, NN, OL, SC. Stewart Island.

Ecology. Lowland, montane. Fossorial. Banks of rivers and big brooks, at a certain distance (1–10 m) from water. Open ground; moist, soft, sandy (yellow), bare or sparsely vegetated soil. Nocturnal; hides during the day in the sand, sometimes at the base of plant-tufts and under well embedded stones. Gregarious.

Biology. Seasonality: September–April. 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. Pouring water over the ground; treading the soil with the feet; turning stones.

Reference. Larochelle and Larivière 2001: 81 (catalogue; biology, dispersal power, ecology, geographic distribution, references).

Figures

Figures 17–20. Dorsal habitus. 17) Bembidion charile. 18) B. dehiscens. 19) B. actuarium. 20) B. musae. Scale line = 1 mm.

Figures 53–60. Aedeagi, lateral. 53) Bembidion musae. 54) B. orbiferum. 55) B. giachinoi. 56) B. callipeplum. 57) B. nesophilum. 58) B. tekapoense. 59) B. anchonoderus. 60) B. stewartense.

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.