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Species Page - Cercyonis oetus
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scientific name    Cercyonis oetus    

common name     Small Wood-Nymph

habitat
Dry montane and prairie grasslands, sandy parkland and prairie grasslands.

seasonality
One flight, peaking in early July to early August.

identification
Upperside an even, dark grey-brown with two dark forewing eyespots. Underside with fine, dark striations and fore- and hindwing eyespots, hindwing postmedian area with grey frosting. C. pegala is similar, but oetus has the upper forewing spot larger than the lower one, is slighlty smaller overall, and lacks the blue scales often found in the forewing underside spots of pegala. Our populations have been referred to either subspecies charon or sylvestris (Guppy & Shepard 2001, Layberry et al. 1998). Bird et al (1995) point out that these names do not describe Alberta populations very well.

life history
Undescribed in Alberta. The yellow eggs turn orange brown and are laid singly. The larvae are green with dark dorsal and pale subdorsal and lateral lines, and are covered in fine white hairs (Scott 1986). First instars hibernate before beginning to feed in the spring (Scott 1986). Pupae are various shades of green.

conservation
Not of concern.

diet info
Grasses are the likely larval hosts, but no species have been confirmed for western Canada. Adults nectar at flowers (Bird et al. 1995).

range
Peace River grasslands of BC (not yet recorded from the Alberta side) south to NM and AZ, east to Saskatchewan (Scott 1986). There is an isolated record from Ft. McMurray, Alberta (Layberry et al. 1998).

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=2850



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References (4)
Specimen Info
There are 44 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (44)

 

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