Euwallacea fornicatus
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Author(s): Javier Mercado, Colorado state University
Source: IPM Images
Euwallacea fornicatus (Eichhoff, 1868) - (polyphagous shot hole borer)
This species of ambrosia beetle is native to southern parts of Asia and parts of the Pacific. This includes countries from Japan in the east to India and Sri Lanka in the west, and Malaysia (Sabah) in the south, it has been also recorded from Samoa. It is invasive in Israel, South Africa and western North America (California). In its native range, the host plants are mainly Erythrina and Cunninghamia. It forms a complex of several closely related species and records before 2017 may be records of other species within this complex. The complex includes Euwallacea kuroshio and Euwallacea perbrevis which are also invasive.
The adults are dark brown to black and can be distinguished in most cases from other species of the E. fornicatus complex by the following combination of characters: The elytra length is shorter the 1.55 mm, and the pronotum length is shorter than 1.05 mm. For a definite identification, the DNA structure needs to be determined.
Synonyms:
Xyleborus fornicatus
Xyleborus whitfordiodendrus
For a taxonomic review of this species see Smith et al. (2019).
- Other images of Euwallacea fornicatus (IPM Images - click to enlarge)
head
posterior end
