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Les ailes antérieures sont falquées à l'apex. La couleur de fond des ailes est jaune pâle, mouchetée et teintée de brun rouille à noir dans les 2/3 de l'aire discale avec une intensité variable selon les individus ; ligne postdiscale restreinte à de petites taches noires ; tache cellulaire ronde, grosse, blanche et cerclée de brun-noir ; liseré marginal brun rouille.
Détermination :
L'adulte est assez difficile à identifier. Il demande un examen précis.
Espèces proches :
En France métropolitaine, l'espèce peut être confondue avec Cyclophora lennigiaria (Ephyre myope), mais aussi avec d'autres espèces de Cyclophora spp. sans un œil averti.
Période d’observation :
Les adultes volent d'avril à juin puis de juillet à septembre.
Biologie-éthologie :
Cyclophora albiocellaria a deux générations annuelles. Les adultes ont une activité nocturne. Monophage, la chenille se nourrit d'Acer campestris et très localement d'Acer monspessulanum. Ce sont les chrysalides qui hivernent.
Biogéographique et écologie :
Ouest-paléarctique, l'Ephyre ocellée de blanc a une aire de répartition morcelée des Alpes françaises où elle atteint sa limite occidentale, à l’Europe centrale et méridionale, la Corse et la Sicile, puis la Turquie, le Caucase, le nord de l’Iran jusqu'aux montagnes d’Asie centrale. Espèce thermophile, elle apprécie les haies et les boisements clairs. Localisée, elle s'observe de l'étage collinéen à montagnard.
D'après :
Hausmann A., 2004. The Geometrid Moths of Europe, Sterrhinae. Apollo Books éditeur. Stenstrup (DK) Volume 2, 600 pp. Collectif d'entomologistes amateurs coordonné par Roland Robineau, 2007. Guide des papillons nocturnes de France. Ed. Delachaux & Niestlé. 288 pp.
The map presents a summary at the 10 x 10 km grid of the observation data for the species transmitted to the SINP. These data have been subjected to validation filters.
Distribution map from the Atlas of Departmental Biodiversity and Marine Sectors program
Current distribution in metropolitan France
The map presents a reference distribution layer of the species at the scale of departments and marine sectors. The presence and absence data were established by expertise within a network of partners. This reference distribution is used in the validation process of the SINP data at the INPN level.
Distribution map from the Atlas of Departmental Biodiversity and Marine Sectors program
Certain presence
Corresponds to a report on the basis of at least one observation proved within a period of 10 years (20 years for little-known invertebrates) preceding the year and no presumption of extinction since obtaining the last data nor doubt on reproductive and implemented nature of this population. For migratory species, the presence indicated concerns areas of reproduction.
Probable presence
This status is based on one or more of the following criteria:
search of species incomplete but presence of supportive environments;
ecology of the species consistent with the hypothesis of his presence;
the last reliable sighting is older than 10 years compared to the reference date, no recent specific research and no presumption of extinction from that date [vertebrates, invertebrates and plants well studied (rhopalocera, grasshoppers, dragonflies ...)] ;
the last reliable observation being older than 20 years, no recent specific research and no presumption of extinction from that date [poorly known taxa: fungus, many invertebrates...].
Probable or certain absence
This point covers the absence, more difficult by nature to demonstrate than presence. This status is based on one or more of the following criteria:
intensive but unsuccessful targeted research;
lack of adequate environments;
unobserved species while its presence is easily detected;
unlikely presence for historical or biogeographical reasons.
This status must be assigned to a department in which the presence of the species is casual.
Absence due to a proven extinction
Particular case of absence due to a proven extinction less than a half century ago (older disappearances are treated as "no probable or definite").
No information
In the state of knowledge, we can not comment on the presence or absence in the current department. This is the default status when not comprised in one of the previous categories or whenever there is doubt.