Cryptoxyleborus percuneolus
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Cryptoxyleborus percuneolus lateral; W. Sittichaya |
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Cryptoxyleborus percuneolus dorsal; W. Sittichaya |
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Cryptoxyleborus percuneolus declivity; W. Sittichaya |
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Cryptoxyleborus percuneolus frontal; W. Sittichaya |
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Taxonomic history
Xyleborus percuneoulus Schedl, 1951a: 85.
Xyleborinus percuneolus (Schedl): Wood & Bright, 1992: 809.
Cryptoxyleborus percuneolus (Schedl): Beaver & Hulcr, 2008: 145.
Diagnosis
1.4 mm long (n = 1); 2.55 times as long as wide (Sittichaya et al. 2019Sittichaya et al. 2019:
Sittichaya W, Smith SM, Beaver RA. 2019. Ten newly recorded species of xyleborine ambrosia beetles (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Thailand. ZooKeys 862: 109-127. https://doi.org/10.3897/ zookeys.862.34766). This species can be distinguished by its minute size; elytralelytral:
pertaining to the elytra
pit mycangiamycangia:
structures used to carry fungal symbionts; highly morphologically variable
absent; antennalantennal:
pertaining to the antennae
funicle 3-segmented; elytralelytral:
pertaining to the elytra
interstriae distinctly seriateseriate:
arranged or occurring in rows
punctatepunctate:
set with fine impressed points, appearing as pin pricks
, without very densely placed punctures at the basebase:
point or edge closest to the body; opposite of apex
.
May be confused with
Cryptoxyleborus confusus and Fraudatrix simplex
Distribution
Indonesia (Java), Malaysia (Sabah), Thailand
Host plants
No host records are known, but hosts are presumably similar to other Cryptoxyleborus which are specific to Dipterocarpaceae (Beaver and Hulcr 2008Beaver and Hulcr 2008:
Beaver RA, Hulcr J. 2008. A review of the ambrosia beetle genus Cryptoxyleborus Schedl (Coleoptera, Curculionidae: Scolytinae). The Coleopterists Bulletin 62: 133-153. https://doi.org/10.1649/1026.1).
Remarks
One gallery system investigated consisted of an unbranched entrance tunnel leading to a single terminal brood chamber enlarged in the longitudinal plane, with multiple tunnels extending further into the wood (Beaver and Hulcr 2008Beaver and Hulcr 2008:
Beaver RA, Hulcr J. 2008. A review of the ambrosia beetle genus Cryptoxyleborus Schedl (Coleoptera, Curculionidae: Scolytinae). The Coleopterists Bulletin 62: 133-153. https://doi.org/10.1649/1026.1).
DNA data
Sequences available for COI and CAD.
