A study of the natural immunity of the larch sawfly (Pristiphora erichsonii (Htg.)) to the introduced parasite Mesoleius tenthredinis Morley, in Manitoba and Saskatchewan
The larch sawfly, Pristiphora erichsonii (Hartig), is the most important pest of tamarack (Larix laricina) in North America. Entomologists differ as to whether this species is an introduction from Europe or a native of America. The available evidence appears to indicate that the insect was introduc...
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| Language: | en_US |
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2011
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| Online Access: | http://hdl.handle.net/1993/4632 |