Yesterday I have visited the site and taken the butterflies, especially Silver-sudded/Idas/Reverdin's Blues
here (grassy place with shrubs cleared only),
here (abandoned grassy orchard growed by the bush over) and
here (the pasture).
I have noted these possible foodplants of
Plebejus sp.:
- Purple Crownvetch -
Coronilla varia
- Wild Liquorice -
Astragalus glycyphyllos
- Red Clover -
Trifolium pratense
- Broadleaf Birdsfoot Trefoil -
Lotus corniculatus
Wild Liquorice was completely past blossom, with
ripening pods. On some pods there were some
outgrowths (and the
2nd one), probably caused by insects.
Purple Crownvetch and Red Clover were past blossom, to, but not completely and I have found some flowers of ones.
But the
flowers of Broadleaf Birdsfoot Trefoil were what the Blues were most attracted by. But I haven't succeeded in taking of any female putting eggs.
I have taken a
collection of photos with extra consideration to
P. idas/argyrognomon of which I have taken more specimens and mostly more photos of each specimen.
By some females of ones it is difficult to differ if they are
P. idas or
P. argus.
P.S.: My photo on Biolib.cz was
re-determined by Jiří Beneš from the Czech Entomological Institute back to
cf. P. argyrognomon with the remark: "Near surely it is not
P. idas, the 2nd breed of
P. argyrognomon occur in south Moravia as early as from the half of July, for example in areas of Chřiby hills or Ždánice forest is abundant (and many times revised). Species
Plebejus idas is badly determined practically in all collections - incl. museum ones, nearly always it is
P. argyrognomon,
P. idas is clearly near extinct in the CZ now - and its exigencies are much more clean-cut. On principle I don't recommend determination after the habit of the imagos, such determination wouldn't taken seriously, the audit of the prove specimens after male genitalia is absolutely necessary."