Xyleborus s. l., species with unclear generic placement

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Click on image to see large version. Length indicates size range of the species.
Xyleborus bidentatus Xyleborus bidentatus, length: 3.0-4.5 mm.
Xyleborus bidentatus Holotype declivity photo K MakarovXyleborus bidentatus, Holotype declivity photo K Makarov.
Xyleborus bidentatus Holotype frons photo K MakarovXyleborus bidentatus, Holotype frons photo K Makarov.
Xyleborus bidentatus Holotype labels photo K MakarovXyleborus bidentatus, Holotype labels photo K Makarov.
Xyleborus bidentatus Holotype photo K MakarovXyleborus bidentatus, Holotype photo K Makarov, length: 3.0-4.5 mm.
Xyleborus bidentatus junior synonym Xyleborus subcostatus holotypeXyleborus bidentatus, junior synonym Xyleborus subcostatus holotype, length: 3.0-4.5 mm.
Xyleborus bidentatus junior synonym Xyleborus subcostatus holotype topXyleborus bidentatus, junior synonym Xyleborus subcostatus holotype top, length: 3.0-4.5 mm.
Xyleborus bidentatus PNG identified as X subcostatus by SchedlXyleborus bidentatus, PNG identified as X subcostatus by Schedl, length: 3.0-4.5 mm.
Xyleborus bidentatus sideXyleborus bidentatus, side, length: 3.0-4.5 mm.
Xyleborus bidentatus topXyleborus bidentatus, top, length: 3.0-4.5 mm.
Xyleborus cinctipes Xyleborus cinctipes, length: 2.8 mm.
Xyleborus declivispinatus antennaXyleborus declivispinatus, antenna.
Xyleborus declivispinatus sideXyleborus declivispinatus, side, length: 4.4 mm.
Xyleborus declivispinatus topXyleborus declivispinatus, top, length: 4.4 mm.
Xyleborus granulosus Xyleborus granulosus, length: 2.9-3.2 mm.
Xyleborus judenkoi junior synonym Xyleborus immitatrix holotypeXyleborus judenkoi, junior synonym Xyleborus immitatrix holotype, length: 1.5-1.8 mm.
Xyleborus judenkoi junior synonym Xyleborus immitatrix top holotypeXyleborus judenkoi, junior synonym Xyleborus immitatrix top holotype, length: 1.5-1.8 mm.
Xyleborus judenkoi sideXyleborus judenkoi, side, length: 1.5-1.8 mm.
Xyleborus judenkoi topXyleborus judenkoi, top, length: 1.5-1.8 mm.
Xyleborus metacuneolus sideXyleborus metacuneolus, side, length: 2.2 mm.
Xyleborus metacuneolus topXyleborus metacuneolus, top, length: 2.2 mm.
Xyleborus papuanus antennaXyleborus papuanus, antenna.
Xyleborus papuanus sideXyleborus papuanus, side, length: 3.0 mm.
Xyleborus papuanus topXyleborus papuanus, top, length: 3.0 mm.
Xyleborus pileatulus holotypeXyleborus pileatulus, holotype, length: 2.1 mm.
Xyleborus pileatulus top holotypeXyleborus pileatulus, top holotype, length: 2.1 mm.