|scientific name Speyeria atlantis |
common name Atlanits Fritillary
Essentially a boreal forest species in AB, usually near moist spruce woods.
The single yearly flight peaks in mid to late July.
Very similar to S. hesperis, with which it was considered to be conspecific until recently (Scott et al. 1998). Atlantis is larger on average, with a broader, more squared-off forewing and heavier upperside markings. The hindwing underside has a chocolate-brown disc, compared to reddish-brown or rusty-brown in hesperis.
The black larvae have grey or brown stripes and orange spines (Layberry et al. 1998). Unlike most other Alberta Speyeria, atlantis is a species of moist, mixed forest habitats.
Not of concern.
The larval hosts of Atlantis are unconfirmed, but are believed to be violets (Layberry et al. 1998). Adults nectar at thistle and fireweed (Hooper 1973).
Newfoundland west to BC (Layberry et al. 1998)
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