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Text © K. Reißmann, T. Hörren, M. Stern, F. Bötzl and C. Benisch

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Nemosoma caucasicum Menetries, 1832
Nemosoma caucasicum
The 5.5 to 9.5 mm large bark-gnawing beetle Nemosoma caucasicum (family Trogositidae) belongs to a very small family, originally with only four species known to occur in Germany and around 325 species globally. A few years ago Nemosoma caucasicum was recorded in Germany for the first time and has been discovered since then several times at the Kaiserstuhl on ash trees. The name of the genus is derived from the Greek words nema (thread) and soma (body) and describes the slim, elongate body shape of the beetles. Both beetles and larvae are predaceous and feed on various bark beetles living on ash trees, e.g. Hylesinus crenatus, larch elm bark beetle. Due to their body shape they can follow their prey swiftly in their galleries. (KR/CB)

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