Key (online version)
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1a |
| Basal segment of antenna long, length at least 3x width [Fig. 77] |
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2 |
| b |
| Basal segment of antenna short, length less than 2x width [Fig. 75] |
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4 |
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2a |
| Males: mesonotum finely sculpured, almost shining, with two inconspicuous stripes of golden hairs. [Fig. 82] Females: mesonotum with three pollinose stripes [Fig. 87] |
| Xylophagus ater Meigen, 1804 |
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| b |
| Mesonotum pollinose, only lateral margins shining. [Fig. 86] Basal antennal segment very long (length 4x width) |
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3 |
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3a |
| Frons lustrous [Fig. 89] |
| Xylophagus kowarzi (Pleske, 1925) |
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| b |
| Upper half of fron matt [Fig. 90] |
| Xylophagus matsumurae Miyatake, 1965 |
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4a |
| Mesonotum and 1st tergite pollinose [Fig. 88] |
| Xylophagus cinctus (De Geer, 1776) |
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| b |
| Mesonotum and 1st tergite lustrous |
| Xylophagus junki (Szilády, 1932) |
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