Bembidion (Zecillenus) embersoni ( Lindroth, 1980 )

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 : 18-19

Bembidion (Zecillenus) embersoni ( Lindroth, 1980)

Fig. 9 , 82

Zecillenus embersoni Lindroth, 1980: 185 . Type locality: Mason Bay, Stewart Island.

Bembidion (Zecillenus) embersoni: Toledano 2005: 130 .

Description. Body length 5.0 mm. Head black; pronotum black with rufotestaceous lateral margins; elytra pale testaceous, with a black triangular discal marking (reaching interval 6) and interval 2 infuscated behind middle; antennae bicolored, with segments 1–4 pale testaceous and segments 5–11 strongly infuscated; legs pale testaceous, with apex of femora, base of tibiae and tarsi slightly infuscated; abdomen dark brown. Microsculpture strong, irregularly isodiametric on disc of head; obsolete, with traces of transverse meshes (microlines) on disc of pronotum; strong on elytra, isodiametric on disc, granulate elsewhere. Head, pronotum, and disc of elytra shiny, remainder of elytra dull; metallic lustre present on head and disc of elytra (aeneous). Thorax. Pronotum widest about middle; sides moderately rounded anteriorly, not sinuate posteriorly; posterolateral angles subrectangular; laterobasal foveae shallow, ill-defined (vaguely elongate), short, not reaching basal margin. Elytra. Elliptical, widest about middle. Shoulders somewhat prominent. Sides moderately rounded. Striae incomplete, barely suggested and impunctate laterally and apically; striae 2–5 poorly impressed, shallow and finely punctate on disc; striae 6–7 obsolete. Intervals subdepressed. Lateral margins slightly widened subapically; subapical tooth obtuse. Subapical sinuations moderately strong. Sutural apices obtusely rounded. Apex strongly rounded. Aedeagus. Male unknown.

Material examined. 1 specimen ( NZAC).

Geographic distribution ( Fig. 82 ). Stewart Island: Mason Bay.

Ecology. Coastal lowland. Area of extensive sand dunes; probably along the sandy banks of a meandering estuarine stream.

Biology. Seasonality: February.

Dispersal power. Brachypterous (incapable of flight). Moderate runner. Vagility limited by flight incapacity.

Reference. Larochelle and Larivière 2001: 86 (as Zecillenus embersoni ; catalogue; biology, dispersal power, ecology, geographic distribution, reference).

Figures

Figures 9–12. Dorsal habitus. 9) Bembidion embersoni. 10) B. brullei. 11) B. rotundicolle. 12) B. tairuense. Scale line = 1 mm.

Figures 77–82. Species distribution maps. 77) Bembidion callipeplum. 78) B. chalceipes. 79) B. chalmeri. 80) B. charile. 81) B. dehiscens. 82) B. embersoni.