Bembidiina

Stephens, 1827

Genus Guides

A large subtribe of ground beetles (Carabidae) comprising over 120 and more than 3,100 described . Members are generally small to minute beetles with diverse morphologies across numerous subgenera. The subtribe has a distribution with major centers of diversity in the Palaearctic and Afrotropical regions. Taxonomic revisions continue to refine species boundaries, synonymies, and subgeneric placements based on male genitalia and elytral microsculpture.

Micratopus by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.

Bembidion haruspex by (c) Trevor Van Loon, some rights reserved (CC BY), uploaded by Trevor Van Loon. Used under a CC-BY license.

Bembidion rusticum by no rights reserved, uploaded by Nick Bédard. Used under a CC0 license.

Pronunciation

How to pronounce Bembidiina: /bɛmˈbɪdiˌina/

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Identification

Identification relies heavily on male genitalia () structure and elytral microsculpture patterns. The Sinechostictus group is characterized by: deep 8 sometimes incomplete anteriorly and positioned close to the elytral marginal edge; rounded basal edge not prolonged obliquely inward; setae present on stria 3; metasternal (between mesocoxae) never bordered; copulatory pieces strongly sclerified and lacking a "squamiferous packet"; aedeagus base with two subequal lobes framing the basal opening. within subgenus Neja with not microsculptured or with microsculpture restricted only at the extreme elytral apex can be distinguished using specialized keys.

Images

Distribution

. Palaearctic region: with records from Syria, Montenegro, Afghanistan, Iraq, Turkey, Tajikistan, Greece, Poland, and Kazakhstan. Afrotropical region: including Ethiopia with multiple . France: comprehensive fauna documented through identification keys. Anatolo-Caucasian-Turanian region: including Iran, Azerbaijan, and Iraq.