bronze knapweed root borer (Sphenoptera jugoslavica ) on diffuse knapweed (Centaurea diffusa ) - 5435750

bronze knapweed root borer
Sphenoptera jugoslavica Obenberger, 1926

Host: diffuse knapweed (Centaurea diffusa Lam.)
Descriptor: Egg(s)
Description: eggs laid at base of rosette. Blueish eggs have not hatched yet, white ones have, note frass from larvae boring into root crown.
Image type: Field
Image location: Oregon, United States

Specimen Information

Specimen in collection: No
Specimen Condition:
Identification Method:

Photographer Information

Name: Eric Coombs
Organization: Oregon Department of Agriculture
Country: United States

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Image Number: 5435750

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Image Citation:(?) Eric Coombs, Oregon Department of Agriculture,

Node Affiliation: Bugwood - UGA

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Image uploaded on Thursday, May 12, 2011
Image Information last updated on Friday, May 13, 2011