Water ringlet (f. vergy)
on
right, with Scotch argus on left, Switzerland, August 2014
Male, form vergy,
Switzerland, July 2009
Switzerland, August 2017
Switzerland, August 2016
Male, form vergy,
Switzerland, July 2006
Male, form vergy,
Switzerland, July 2009
Male, nominate form, Switzerland, October 2012
Male, nominate form, Switzerland, October 2012
Distribution
In Switzerland, this is one
of the later
ringlets, appearing in the second half of July and continuting into
September. The books say it flies from the end of June, so I imagine
this must be at lower altitudes. I find it locally in rocky, often
damp, grassy places, often near trees.
The mountain form in Switzerland, f. vergy,
is very dark, the two apical ocelli of the male being reduced to points
and set in so little (or no) red they are not visible until you look
really closely. The female has a little more red. In the valley I have
found individuals resembling the nominate form, pronoe,
with considerably more red. The female of this form resembles a Scotch
argus from above, while the male has reduced - but nevertheless obvious
- red banding. Fortunately, despite this variation, the species is
readily identified by the underside - in particular, by the purple
reflections on the hindwing and beneath the apex of the forewing, often
suffusing the eyespot region here. As soon as this is seen, there can
be no doubt about the species. It is one of the larger Erebia.
The larval foodplants are grasses, including sheep's fescue and other
fescues, and it is the caterpillar that hibernates.