|scientific name Cercyonis oetus |
common name Small Wood-Nymph
Dry montane and prairie grasslands, sandy parkland and prairie grasslands.
One flight, peaking in early July to early August.
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.
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.
Not of concern.
Grasses are the likely larval hosts, but no species have been confirmed for western Canada. Adults nectar at flowers (Bird et al. 1995).
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).
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