Species index

Mountain Fritillary

(Boloria napaea)

 

Female 25/07/03 Swiss Alps

The Mountain Fritillary flies in Alpine meadows above the tree line and is really quite similar to the Shepherd's Fritillary. Napaea females, however, like the one pictured are fairly easy to pick out from the hazy grey or grey/green suffusion across the upper forewings. There is a theory for separating napaea and pales indicating that the sub-marginal and post-discal upper forewing rows of black dots are roughly parallel right up to space 6 in napaea (this holds true for this individual) and that the two rows are significantly closer together from space 4 in pales (true for these.) I'm not really sure how reliable this is though and it would merit further comparisons of both sexes (my pictures are all females.)

Species index