The Larvae of Choristoneura fumiferana (Clem.) and C. pinus Free. (Lepidoptera: Tortricidae)
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It has long been known that a series of late-instar larvae of Choristoneura fumiferana (Clem.) may be distinguished from one of C. pinus Free. by colour differences of the head and prothoracic shield: specimens of the former usually have dark heads and light prothoracic shields; specimens of the latter usually have light heads and dark prothoracic shields. However, intensive study of the larvae, including numerous specimens of C. fumiferana from the spruce-balsam fir areas of Algonquin Park, Ontario, and of C. pinus from jack-pine areas at Normandale, Ontario, has shown that there are highly significant structural differences in the head; these differences serve to identify small series of either species and most single specimens.
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1996 ◽
Vol 78
(2)
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pp. 129-133
1977 ◽
Vol 109
(9)
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pp. 1239-1248
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1996 ◽
Vol 128
(6)
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pp. 1109-1113
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2007 ◽
Vol 37
(6)
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pp. 1024-1033
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2001 ◽
Vol 31
(3)
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pp. 373-376
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2001 ◽
Vol 31
(12)
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pp. 2160-2172
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