GenusBembidionLatreille (Coleoptera: Carabidae) in New Zealand: A revision

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Abstract
The cosmopolitan genus Bembidion is represented in New Zealand by 20 species, of which 19 are endemic; B. brullei appears to be a recent introduction. On phenetic characters the species fall into 7 subgenera, as follows: Zeplataphus n.subg.—maorinum Bates, dehiscens Broun, charile Bates, granuliferum n.sp., townsendi n.sp., tairuense Bates; Zeactedium Netolitzky—orbiferum Bates, musae Broun; Zeperyphodes n.subg.—callipeplum Bates; Zeperyphus n.subg.—actuarium Broun; Zemetal‐lina n.subg.—chalceipes Bates, solitarium n.sp., anchonoderum Bates, tekapoense Broun, wanakense n.sp., urewerense n.sp., hokitikense Bates, parviceps Bates; Ananotaphus Netolitzky—rotundicolle Bates; Notaphus Stephens—brullei Gemminger & Harold. The North Island population of maorinum is distinct from the typical South Island form in having reduced microscrulpture on the elytra, and is here separated as levatum n.ssp. An apparent geographic isolate of anchonoderum, represented by 2 females from Stewart Island, is provisionally recognised as stewartense n.ssp. The polymorphic complex within subg. Ananotaphus is here regarded as a single species, of which the North Island population is sufficiently distinct to warrant subspecific status as eustictum Bates; however, intergrades occur in the north‐west of the South Island. The following names fall into synonymy: latiusculum Broun (= maorinum); diaphanum Broun (= musae); nesophilum Broun (= callipeplum)’, tinctellum Broun (= chalceipes);antipodum Broun (= anchonoderum)’, tantillum Broun and probably attenuatum Broun (=hokitikense)’, clevedonense Broun and waikatoense Broun (= rotundicolle, ssp. eustictum)’, gameani Jeannel (= brullei). The relationships and aspects of the biology and ecology of the New Zealand Bembidion fauna are discussed.

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