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Xyleborini classification
Dryoxylon onoharaense (Murayama, 1934)
EOL Text
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
Wood, 1982: As in the species spathipennis, this species occurs in wet lowland forests in almost any souring log that is in contact with the soil. The elongate gallery system branches and rebranches and anastomoses with other systems. Few other Scolytidae tolerate the wet souring conditions where this species breeds. It is much less common than spathipennis. Wood, 2007, general comment on Xyleborus spp.: Felled, broken, damaged, and unthrifty stems ranging in diameter from about 3 cm to more than 3 m are selected for attack. In broken or felled stems the attack may be massive and encompass most or all of the sapwood within a few days. The galleries are usually of a simple branching type that may join other similar galleries of the same species. Eggs are usually placed in clusters at or near the end of branch tunnels. The larvae feed on the mycelium of ambrosial fungi, then pupate in these galleries. The brood emerges from the parent entrance tunnels.
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Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/263 |
Beaver and Browne, 1978: This species, despite its large size, attacks small branches. Host stems varied from 2.2 - 4.6 cm diameter. Usually there was a circumferential gallery with a longitudinal branch in the stem centre, but in the largest stem, a radial gallery had three branches curving through the wood. Browne, 1961: This species, which occurs also in Java, Sumatra, and Borneo, is the largest member of the group in Malaya, and is not abundant. It has been found infesting very small, cut poles and branches, usually of about 3-5 cm in diameter. As usual in the group, the nest comprises a circumferential gallery in the transverse plane, and a longitudinal tunnel in which the brood lives. Beaver, 2010: A polyphagous species recorded from at least 14 families and 22 genera of angiosperm trees. Browne (1961) briefly describes the gallery system, which is typical of the genus.
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Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/80 |
Wood (2007) reported the species boring in wood of broken branches and tree seedlings 2-7 cm in diameter. The tunnel was radial in the wood about 1 cm, then it branched, the branches turned transversely across the grain of woodand followed a growth ring to the opposite side of the branch where they usually anatomosed to form a complete ring. Masses of eggs were deposited in the tunnel. The larvae are xylomycetophagous and fed communally on the ambrosia mycelium and, eventually, on the wood as they expanded the original tunnel. About 20-50 larvae were produced in each gallery system examined. Wood, 1982: The female usually attacks cut or broken branches and tree seedlings 2-7 cm in diameter. The entrance tunnel extends directly into the wood to a depth of about 1 cm, then bifurcates and follows a growth ring both to the right and to the left, on the same transverse plane, and often meeting and joining on the opposite side of the branch. Masses of eggs are deposited in the tunnels. The larvae feed in congress upon the ambrosial fungus and, evidently, also upon the woody tissues, thus expanding the original gallery along the grain of the wood to form a large tabular chamber barely large enough to accommodate the mass of growing larvae. As many as 30-50 larvae may be produced by one female. Males are rare.
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Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/262 |
Wood (2007) reported the biology of this species as the same as in T. ebenus (Wood). Wood reported T. ebenus boring in wood of broken branches and tree seedlings 2-7 cm in diameter. The tunnel was radial in the wood about 1 cm, then it branched, the branches turned transversely across the grain of woodand followed a growth ring to the opposite side of the branch where they usually anatomosed to form a complete ring. Masses of eggs were deposited in the tunnel. The larvae are xylomycetophagous and fed communally on the ambrosia mycelium and, eventually, on the wood as they expanded the original tunnel. About 20-50 larvae were produced in each gallery system examined.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/261 |
Wood (2007) described collecting specimens in stems ranging from 3-8 cm in diameter. The entrance tunnel penetrated about 1cm into the wood and branched. Each arm cut across the grain of the wood and followed a growth ring toward the opposite side of the branch. The arms usually joined, forming a complete ring. The larvae were reared within the tunnel on the ambrosial fungus until growth forced them to enlarge the original tunnel. The species is apparently xylomycetophagous as the wood was apparently digested with the fungal mycelium. Wood, 1982: The female usually attacks cut or broken branches and tree seedlings 2-7 cm in diameter. The entrance tunnel extends directly into the wood to a depth of about 1 cm, then bifurcates and follows a growth ring both to the right and to the left, on the same transverse plane, and often meeting and joining on the opposite side of the branch. Masses of eggs are deposited in the tunnels. The larvae feed in congress upon the ambrosial fungus and, evidently, also upon the woody tissues, thus expanding the original gallery along the grain of the wood to form a large tabular chamber barely large enough to accommodate the mass of growing larvae. As many as 30-50 larvae may be produced by one female. Males are rare. It is a common species in agricultural and other disturbed areas.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/260 |
Wood (2007) distinguishes the species from T. bicornutus (Wood) by the smaller body size; and by the different arrangement of minor tubercules lateral to major spine of the declivity.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/262 |
Wood (2007) distinguishes the species from T. ebenus (Wood) by the larger body size; and by the different arrangement of minor denticles lateral to the major spine.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/261 |
Wood (2007) reports that Taurodemus flavipes can be distinguished from T. salvini (Blandford) by the smaller body size; by the dense micropunctures on the subshining elytral declivity; and by the smaller average size of the spines on the basal half of the elytral declivity.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | hulcr, Xyleborini Ambrosia Beetles |
Source | http://xyleborini.myspecies.info/node/260 |