Bembidion (Zeactedium), Netolitzky, 1931

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

Subgenus Zeactedium Netolitzky, 1931

Fig. 20–22

Zeactedium Netolitzky, 1931: 182 .

Type species. Bembidium orbiferum Bates, 1878b , by original designation.

Description. Body length 5.5–7.6 mm; color mostly dark or forebody dark and elytra bicolored; elytra with or without variegated color pattern; legs pale. Microsculpture present, poorly or moderately developed. Forebody narrow in comparison to elytra. Head. Antennae filiform, moderately long, reaching about elytral shoulders or very long, reaching about basal third of elytra. Frontal furrows not prolonged on clypeus. Submentum with four setae (as in subgenus Zeperyphus ). Ligula with two free, distant setae. Palpi with penultimate labial segment plurisetose (five to seven setae) on anterior margin. Thorax. Pronotum moderately or strongly convex, cordate, widest before middle; laterobasal carinae absent; setiferous puncture absent near posterolateral angle; laterobasal foveae poorly developed. Epipleura (in dorsal view) exposed in front of posterolateral angles. Elytra. Moderately or strongly convex, ovate, widest about middle. Shoulders moderately rounded. Scutellar striole consisting of a row of punctures. Striae complete, punctate. Intervals depressed; interval 3 with two discal setiferous punctures; interval 5 without discal setiferous punctures. Subapical sinuations feeble. Apical striole present; preapical setiferous puncture not isolated. Sutural apices angulate. Abdomen. Last visible sternum (sternum VII) of female with four long ambulatory setae only. Aedeagus. Internal sac with a brush sclerite. Parameres. One or two terminal setae present.

Geographic distribution. New Zealand (endemic).

Ecology. Sandy river banks.

References. Lindroth 1976 (description); Larochelle and Larivière 2001: 81 (catalogue); Toledano 2005 (description of new subspecies; taxonomy); Larochelle and Larivière 2007: 48 (description).

Figures

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

Figures 21–24. Dorsal habitus. 21) Bembidion orbiferum. 22) B. giachinoi. 23) B. callipeplum. 24) B. nesophilum. Scale line = 1 mm.