Recent (1977-1980) releases of imported larch casebearer parasites for biological control.

Roger B. Ryan

doi:10.2737/PNW-RN-377

Treesearch

Recent (1977-1980) releases of imported larch casebearer parasites for biological control.

Informally Refereed

Authors:

Roger B. Ryan

Year:

1981

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-377

Source:

Res. Note PNW-RN-377. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 6 p

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Abstract

Releases of Diadegma laricinellum (Hymenoptera: Ichneumonidae), Dicladocerus westwoodii, Dicladocerus japonicus, Chrysocharis laricinellae, Elachertus argissaj, Necremnus metalarus (Hymenoptera: Eulophidae), and Agathis pumila (Hymenoptera: Braconidae) for biological control of the larch casebearer in Oregon, Idaho, and Pennsylvania included some newly imported stocks and additional release locations. More than 14,000 parasites were released at eight sites.

Keywords

Parasites (insect), forest pest control, larch casebearer, Coleophora laricella, biological control, forest pests

Citation

Ryan, Roger B. 1981. Recent (1977-1980) releases of imported larch casebearer parasites for biological control. Res. Note PNW-RN-377. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 6 p