Phylogenetic relationships of the South American ground beetle subgenus Chilioperyphus Jeannel (Coleoptera: Carabidae: Trechinae: Bembidiini: Bembidion Latreille)

摘要

The boundaries and relationships of the ground beetle group Chilioperyphus Jeannel (a subgenus of the cosmopolitan genus Bembidion Latreille) are examined using DNA and morphological data. DNA sequence data from seven genes (six nuclear and one mitochondrial) indicates that Chilioperyphus (as newly defined) is monophyletic, and is related to the subgenera Antiperyphanes Jeannel and Plocamoperyphus Jeannel, within the South American Antiperyphanes Complex. Chilioperyphus includes two described species, B. mendocinum Jensen-Haarup and B. orregoi Germain. Bembidion cassinense Roig-Junent and Gianuca as well as Bembidion cuyanum Roig-Jufient and Scheibler, formerly placed in subgenus Chilioperyphus, are transferred to subgenus Antiperyphanes. Bembidioncuyanum is considered a junior synonym of B. hirtipes Jeannel. The male genitalia of Chilioperyphus is unique in having a very long flagellum that is folded twice, allowing it to fit much of its length within the walls of the median lobe. However, the brush sclerite and basal part of the flagellum are not contained within the median lobe, as they extend anterior to its base.