Conservation Status
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Not of concern.
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Cyclicity
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In Alberta adults fly from in June and July, peaking in late June.
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Distribution
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Southern coastal BC east to Nova Scotia, south to NJ, MO and OR (McGuffin 1981).
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General Description
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Ground colour varies from light to dark rust-brown, AM and PM line thin and well defined, median line diffuse. Most specimens have diffuse black spots in the forewing subterminal space. Similar to E. madusaria, which has a smooth rather than serrate forewing edge. E. johnsonaria has evenly deep serrations on the hindwing edge, obtusaria has the third notch conspicuously deeper; hindwing discal spot absent or faint in johnsonaria, well-defined in obtusaria.
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Habitat
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Deciduous wooded areas in the southern half of the province.
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Life Cycle
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McGuffin (1981) describes the larva in detail. The adults are attracted to lights
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Trophic Strategy
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Larvae are apparently generalists on deciduous trees and shrubs, including dogwood (Cornus), willow (Salix), Spiraea, Vaccinium, elm (Ulmus), ash (Fraxinus), and birch (Betula) (McGuffin 1981).
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Euchlaena johnsonaria
provided by wikipedia EN
Euchlaena johnsonaria, or Johnson's euchlaena moth, is a moth of the family Geometridae. The species was first described by Asa Fitch in 1870. It is found in North America, where it has been recorded from southern coastal British Columbia east to Nova Scotia, south to New Jersey, Missouri and Oregon.[2] The habitat consists of deciduous wooded areas.
The wingspan is about 32 mm. The ground colour of the forewings varies from light to dark rust brown. The antemedial and postmedial lines are thin and well defined. Adults are on wing from May to August.
The larvae feed on various deciduous trees and shrubs, including Cornus, Salix, Spiraea, Vaccinium, Ulmus, Fraxinus and Betula species.[3]
Subspecies
- Euchlaena johnsonaria johnsonaria
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Euchlaena johnsonaria minoraria (Hulst, 1886)
References
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Euchlaena johnsonaria: Brief Summary
provided by wikipedia EN
Euchlaena johnsonaria, or Johnson's euchlaena moth, is a moth of the family Geometridae. The species was first described by Asa Fitch in 1870. It is found in North America, where it has been recorded from southern coastal British Columbia east to Nova Scotia, south to New Jersey, Missouri and Oregon. The habitat consists of deciduous wooded areas.
The wingspan is about 32 mm. The ground colour of the forewings varies from light to dark rust brown. The antemedial and postmedial lines are thin and well defined. Adults are on wing from May to August.
The larvae feed on various deciduous trees and shrubs, including Cornus, Salix, Spiraea, Vaccinium, Ulmus, Fraxinus and Betula species.
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