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Conservation Status

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Not of concern.
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Cyclicity

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Late July into September in Alberta; peak flight in early August.
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Distribution

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Widespread throughout the eastern half of the continent, north and west to Alberta and south to FL (McGuffin 1987).
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General Description

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A large ochre or yellowish fall-flying geometrid. Extremely variable markings and colouration, to the point where barely two individuals are alike. Ranges from pale tan and almost completely unmarked to ochre with heavy transverse lines and extensive dark mottling. Despite this variability, lineola can be separated from similar species by the PM line, which forms a sharp point near the forewing apex. In other species (Synaxis jubararia, Synaxis pallulata and Tetracis sp.), the PM line is straight near the wing apex.
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Habitat

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Mixedwood and deciduous forests and woodlands.
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Life Cycle

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Much like the adult, larvae are extremely variable in colouration, and mimic twigs. Adults are nocturnal and come to light (McGuffin 1987).
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Trophic Strategy

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Larvae are polyphagous on deciduous and coniferous trees and shrubs. Favoured hosts include trembling aspen (Populus), balsam fir (Abies), white birch (Betula), willow (Salix) and balsam poplar (Populus) (Prentice 1963).
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Prochoerodes lineola

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Prochoerodes lineola, the large maple spanworm, is a moth of the family Geometridae. It is found from Nova Scotia to Florida, west to Texas and north to Alberta.[2]

The wingspan is 35–50 mm. Adults have a wing colour which varies from yellowish to light brown or even dark brown, with or without blackish shading. They are on wing from April to October in the south and from July to September in the north.

The larvae feed on the leaves of a wide range of plants, including apple, birch, blueberry, cherry, currant, geranium, grass, maple, oak, poplar, soybean, sweetfern, walnut and willow.

Subspecies

  • Prochoerodes lineola lineola
  • Prochoerodes lineola incurvata (Guenée, 1857)

References

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Prochoerodes lineola: Brief Summary

provided by wikipedia EN

Prochoerodes lineola, the large maple spanworm, is a moth of the family Geometridae. It is found from Nova Scotia to Florida, west to Texas and north to Alberta.

The wingspan is 35–50 mm. Adults have a wing colour which varies from yellowish to light brown or even dark brown, with or without blackish shading. They are on wing from April to October in the south and from July to September in the north.

The larvae feed on the leaves of a wide range of plants, including apple, birch, blueberry, cherry, currant, geranium, grass, maple, oak, poplar, soybean, sweetfern, walnut and willow.

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