Galls on Picea pungens produced by conifer bark louse (Gilletea cooleyi Gill)
detail of Blue spruce.
- Negative number
- 02876
- Lantern slide number
- 02802.D2
- Locality
- W. I. Frothingham. Glen Cove, L.I.
- Date
- 07/17/1918
- Photograph by
- Louis Buhle
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