Biology:Debus emarginatus

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Short description: Species of beetle


Debus emarginatus
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Suborder:
Phytophaga
Superfamily:
Curculionoidea
Family:
Curculionidae
Genus:
Debus
Species:
D. emarginatus
Binomial name
Debus emarginatus
(Eichhoff, 1878)
Synonyms
  • Xyleborus emarginatus Eichhoff 1878
  • Xyleborus exesus Blandford, 1894
  • Xyleborus chinchonae Veen, 1897
  • Xyleborus cordatus Hagedorn, 1910
  • Coptoborus palmeri Hopkins, 1915
  • Coptoborus terminaliae Hopkins, 1915
  • Xyleborus emarginatus semicircularis Schedl, 1973
  • Xyleborus terminaliea Hopkins, 1915
  • Coptoborus terminaliae (Hopkins) Wood and Bright, 1992
  • Xyleborus exesus Blandford, 1894
  • Xyleborus palmeri Hopkins, 1915
  • Coptoborus palmeri (Hopkins): Wood & Bright, 1992

Debus emarginatus, is a species of weevil widely distributed throughout the Old World tropics.[1]

Distribution

It is native to China, India, Sri Lanka, Indonesia, Japan, Laos, Malaysia, Myanmar, Philippines, South Korea, Thailand, Vietnam, Australia, Papua New Guinea and Solomon Islands.[2]

Description

The average length of the species is about 3.3 to 3.6 mm. The postero-lateral extensions of elytra are short, and less than the width of apical emargination. The declivity is shallowly excavated. Elytral declivity clearly, confusedly punctate.[3][4]

Host plants

A polyphagous pest, it is found from many host plants.[5][6]

Control

It is a high-risk quarantine pest where they show inbreeding, with the males generally mating with their sisters within the parental gallery system before dispersal. Adult beetle does not actually feed on the plant material but uses it as a medium for growing the fungus which is the larval food.[2] They are mostly found in felled timber. Attacked plants show signs of wilting, branch die-back, shoot breakage, chronic debilitation, sun-scorch or a general decline in vigour.[7]

References

  1. ↑ Hulcr, Jiri (2010-09-17). "Taxonomic changes in palaeotropical Xyleborini (Coleoptera, Curculionidae, Scolytinae)". ZooKeys (56): 105–119. doi:10.3897/zookeys.56.520. PMID 21594174. PMC 3088323. Bibcode: 2010ZooK...56..105H. http://zookeys.pensoft.net/articles.php?id=2297. Retrieved 2021-09-05. 
  2. ↑ 2.0 2.1 "Xyleborus emarginatus". https://www.cabi.org/isc/datasheet/57158. 
  3. ↑ "SE Asian Ambrosia Beetle ID | Fact sheet". http://idtools.org/id/wbb/sea-ambrosia/factsheet.php?name=16259. 
  4. ↑ "Debus species". http://www.ambrosiasymbiosis.org/PNG_Xyleborini/data/Debus_main.html. 
  5. ↑ "Bark and Ambrosia Beetles of, Debus emarginatus (Eichhoff 1878)". http://www.barkbeetles.info/regional_chklist_target_species.php?lookUp=2086. 
  6. ↑ "Xyleborus emarginatus (Eichhoff). [pest/pathogen."]. https://www.cabdirect.org/?target=%2fcabdirect%2fabstract%2f20097402590. 
  7. ↑ "Knowledge Bank: Xyleborus emarginatus". https://www.plantwise.org/knowledgebank/datasheet/57158. 

Wikidata ☰ Q108480661 entry



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