ID please !

AS a-steinerNOa-SPAM at
Thu Aug 31 12:17:24 EDT 2000

Markku's guesses are quite good.
1. Cabera exanthemata is certainly correct, the moth is not
quite typical (as often happens in bred specimens), but
it's too dark to be Cabera pusaria. (I don't know any
european Idaea which feeds on Salix.)
2. This is Ectropis crepuscularia ([Denis &
Schiffermÿfffffcller], 1775), formerly known as E. bistortata
(Goeze, 1781). There was a discussion some years ago, if
bistortata and crepuscularia could be two species, but most
geometridologists now seem to agree that it is only one
very variable species.
3. Mesapamea-specimens cannot be identified by wing-
markings. You need to dissect the genitalia. The two
widespread and common species are M. secalis (Linnaeus,
1758) and M. didyma (Esper, 1788) (=M. secalella Remm),
your specimen likely belongs to one of them. The third, M.
remmi Rezbanyai-Reser, 1985 seems to be very rare and
local, some authors consider its specific rank unproven and
think it could be a hybrid of secalis and didyma. Recently
Rezbanyai-Reser has described another species from
Switzerland, on the basis of minor genitalic characters:
Mesapamea insolita, which might conceivably occur in France.
All three species (provided the Mesapamea is either secalis
or didyma) are known from the Paris area.
Axel Steiner

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