Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Datasheet

Hypothenemus obscurus
(tropical nut borer)

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Datasheet

Hypothenemus obscurus (tropical nut borer)

Summary

  • Last modified
  • 19 November 2019
  • Datasheet Type(s)
  • Pest
  • Preferred Scientific Name
  • Hypothenemus obscurus
  • Preferred Common Name
  • tropical nut borer
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Metazoa
  •     Phylum: Arthropoda
  •       Subphylum: Uniramia
  •         Class: Insecta

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Pictures

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PictureTitleCaptionCopyright
Adult female H. obscurus - colour light immediately after emergence, but darkens within a day to a very dark-brown. Ruler marks 1mm apart.
TitleAdult female
CaptionAdult female H. obscurus - colour light immediately after emergence, but darkens within a day to a very dark-brown. Ruler marks 1mm apart.
CopyrightVincent P. Jones
Adult female H. obscurus - colour light immediately after emergence, but darkens within a day to a very dark-brown. Ruler marks 1mm apart.
Adult femaleAdult female H. obscurus - colour light immediately after emergence, but darkens within a day to a very dark-brown. Ruler marks 1mm apart. Vincent P. Jones
Damage is typically first noticed as numerous perfectly round holes (ca 0.5 mm in diameter) in the husk of the nut.
TitleDamage to macadamia shell
CaptionDamage is typically first noticed as numerous perfectly round holes (ca 0.5 mm in diameter) in the husk of the nut.
CopyrightVincent P. Jones
Damage is typically first noticed as numerous perfectly round holes (ca 0.5 mm in diameter) in the husk of the nut.
Damage to macadamia shellDamage is typically first noticed as numerous perfectly round holes (ca 0.5 mm in diameter) in the husk of the nut. Vincent P. Jones
Infested kernels initially show one to several tunnels, and in later stages may be completely consumed.
TitleDamage to macadamia kernel
CaptionInfested kernels initially show one to several tunnels, and in later stages may be completely consumed.
CopyrightVincent P. Jones
Infested kernels initially show one to several tunnels, and in later stages may be completely consumed.
Damage to macadamia kernelInfested kernels initially show one to several tunnels, and in later stages may be completely consumed.Vincent P. Jones

Identity

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Preferred Scientific Name

  • Hypothenemus obscurus (Fabricius 1801)

Preferred Common Name

  • tropical nut borer

Other Scientific Names

  • Hylesinus obscurus Fabricius 1801
  • Hypothenemus emarginatus Schedl 1942
  • Hypothenemus kuennemanni Reitter 1902
  • Stephanoderes amazonicus Eggers 1934
  • Stephanoderes asperulus Eichhoff 1872
  • Stephanoderes buscki Hopkins 1915
  • Stephanoderes cassiae Eichhoff 1878
  • Stephanoderes moschatae Schaufuss 1905
  • Stephanoderes obscurus (Fabricius)
  • Stephanoderes rufescens Hopkins 1915

International Common Names

  • French: scolyte du pommier

EPPO code

  • HYOTOB (Hypothenemus obscurus)

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Metazoa
  •         Phylum: Arthropoda
  •             Subphylum: Uniramia
  •                 Class: Insecta
  •                     Order: Coleoptera
  •                         Family: Scolytidae
  •                             Genus: Hypothenemus
  •                                 Species: Hypothenemus obscurus

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 10 Jan 2020
Continent/Country/Region Distribution Last Reported Origin First Reported Invasive Reference Notes

North America

Costa RicaPresentWood (1982)
CubaPresentCABI (Undated b)
Dominican RepublicPresentWood (1982)
GuadeloupePresentCABI (Undated b)
GuatemalaPresentWood (1982)
JamaicaPresentWood (1982)
PanamaPresentWood (1982)
Puerto RicoPresentWood (1982)
Trinidad and TobagoPresentCABI (Undated b)
United StatesPresentCABI (Undated a)Present based on regional distribution.
-FloridaPresentWood (1982)
-HawaiiPresent, WidespreadJones (1995)

South America

BrazilPresentWood (1982)
-CearaPresent, WidespreadCABI (Undated);
-Mato GrossoPresentDorval et al. (2007)
-ParanaPresentFlechtmann et al. (2001)
-Sao PauloPresent, WidespreadCosta et al. (1988); CABI (Undated)
ColombiaPresentWood (1982)
SurinamePresentCABI (Undated b)
VenezuelaPresentWood (1982)

Growth Stages

Top of page Fruiting stage, Post-harvest

List of Symptoms/Signs

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SignLife StagesType
Fruit / internal feeding
Fruit / lesions: black or brown
Seeds / internal feeding
Seeds / rot

References

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Bastos JAM, 1981. Dry tip on 'Ceara rubber', Manihot glaziovii Muell. Arg. Fitossanidade, 5(1):47-49

Bastos JAM; Lima FP, 1980. Tip-borers of 'manicoba' in Pentecoste, Ceara, Brazil. Fitossanidade, 4(1):10-11

Beardsley JW, 1990. Hypothenemus obscurus (Fabricius) (Coleoptera: Scolytidae), a new pest of macadamia nuts in Hawaii. Proceedings of the Hawaiian Entomological Society, No. 30:147-150

Berti-Filho E, 1979. Coleoptera of forestry importance. 1. Scolytidae. Dept. Entomology, ESALQ-USP, Sao Paulo, Brazil, 19:39-43.

Costa EC; Moura JB; Marques EN; De Mura JB, 1988. Observations on cut wood maintained in the forest ecosystem. Departmento de Defesa Fitossanitaria, CCR, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil, 18:3-4.

Delate KM; Armstrong JW; Jones VP, 1994. Postharvest control treatments for Hypothenemus obscurus (F.) (Coleoptera: Scolytidae) in macadamia nuts. Journal of Economic Entomology, 87(1):120-126

Dorval A; Peres Filho O; Marques EN; Moura RG, 2007. Beetles in plantations of Eucalyptus citriodora e E. urophylla in Cuiabá, Mato Grosso State, Brazil. (Coleópteros em plantios de Eucalyptus citriodora e E. urophylla em Cuiabá, estados de Mato Grosso.) Revista de Agricultura (Piracicaba), 82(3):254-268.

Flechtmann CAH; Ottati ALT; Berisford CW, 2001. Ambrosia and bark beetles (Scolytidae: Coleoptera) in pine and eucalypt stands in southern Brazil. Forest Ecology and Management, 142(1/3):183-191.

Hawaii Agricultural Statistical Service (HASS), 1995. Statistics of Hawaiian Agriculture. Honolulu, Hawaii: Hawaii Department of Agriculture.

Jones VP, 1995. Review of macadamia IPM in Hawaii. Proceedings Hawaii Macadamia Nut Association, 35:24-32.

Jones VP; Burnam-Larish LL; Caprio LC, 1992. Effect of harvest interval and cultivar on damage to macadamia nuts caused by Hypothenemus obscurus (Coleoptera: Scolytidae). Journal of Economic Entomology, 85(5):1878-1883

Jones VP; Caprio LC, 1990. Biology and control of insect pests attacking macadamia nuts in Hawaii. Proceedings Hawaii Macadamia Nut Association, 30:24-36.

Jones VP; Follett PA; Westcot D; Campora C, 1996. Developing management alternatives for the tropical nut borer, Hypothenemus obscurus. 36th Annual conference proceedings, Hawaii, USA, 3-4 May 1996., 23-33; 2 ref.

Stoetzel MB, 1989. Common names of insects and related organisms. Common names of insects and related organisms., 199 pp.

Wood SL, 1982. The bark and ambrosia beetles of North and Central America (Coleoptera: Scolytidae), a taxonomic monograph. Great Basin Naturalist Memoirs, No. 6:1359 pp.

Zelaya MR; Flechtmann CAH; Berti Filho E; Maia JLS, 1984. Scolytids that occur in plantations of tropical pines in the State of Sao Paulo. [Abstract]. Resumos, IX Congresso Brasileiro de Entomologia, Londrina - Pr., 22 a 27.7.84 Brazil; Sociedade Entomologica do Brasil, 33

Distribution Maps

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