Caterpillars of Pacific Northwest
Forests and Woodlands
Photo Key to Species
Group A-1b -- Subgroups: Body wall smooth - The body wall of species in group A-1b is not extended into tubercles or warts.
Distinct subdorsal longitudinal lines
- Operophtera bruceata [Geometridae] - Bruce Spanworm
- Dysstroma formosa [Geometridae]
- Thallophaga taylorata [Geometridae]
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Return to Photo Key to Species in Group A-1b
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