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Couleur de fond du dessus des ailes brun-noir densément saupoudrée d'écailles jaunâtres ; lignes transversales post-discales noires, dentées et bordées à leur base par une tache jaune ; tache discale noire ; franges généralement bicolores et délimitées à leur base par une fine ligne noire ondulée. Côte de l'aile antérieure marquée de cinq petites taches jaunes également espacées s'étirant de la ligne post-discale à l'apex.
Détermination :
L'adulte est assez facile de détermination.
Espèces proches :
En France métropolitaine, l'espèce est caractéristique.
Période d'observation :
Les adultes volent de mi-mai à mi-août.
Biologie-éthologie :
L'Inégale a 1 génération par an. L'adulte est actif de nuit. La chenille se nourrit de différentes espèces de lichens du genre Parmelia spp. ainsi que de champignons comme Fomes fomentarius et Polystictus spp. L'espèce hiverne à ce stade.
Biogéographique et écologie :
Euro-sibérienne, l'espèce est présente du nord de l'Espagne au sud de l'Angleterre et de la Scandinavie, puis à travers l'Europe centrale et la Sibérie méridionale. En Europe du Sud, l'espèce est généralement rencontrée dans les vallées des massifs montagneux. Sylvicole, elle vit aux dépens de la typicité de la communauté de lichens et de champignons présents dans les milieux forestiers. L'espèce est présente à l'étage collinéen.
D'après :
Fibiger M., Ronkay L., Yela J-L. & Zilli A., 2010. Rivulinae - Phytometrinae, and Micronoctuidae, including suplement to Noctuidae Europaeae vol 1-11. Noctuidae Europaeae. Entomological Press Soro, Danemark, volume 12, 451 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.