7(6). Third elytral interval wide, 1.7-2.6 times as wide as second (most noticeable around anterior silver spot). Pronotum flatter, with flaring hind angles. (Holarctic.) .....................................B. lapponicum ZetterstedtClick on an image to view larger version & data in a new window
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Click on an image to view larger version & data in a new window7'. Third elytral interval narrower, 1.4-1.6 times as wide as second. (As you can see from the figures, this difference is not striking in some specimens.) Pronotum more convex, hind angles less prominent. (Palearctic.) .......................................B. velox (Linné)
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