The species is very rare, and only recorded twice in Fennoscandia from Norway (2015) and Finland (1942). The host is probably Symmorphus debilatatus. C. leptomandibularis is very similar to C. angustula in body shape and punctation, but females can be recognized by the extremely thin mandibles.
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Juho Paukkunen
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Alexander Berg
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Villu Soon
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Frode Ødegaard
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Paolo Rosa
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NTNU Vitenskapsmuseet
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Norsk institutt for naturforskning