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Lepture
de stature robuste, à élytres rouges marqués d'un motif noir central en
forme de cœur. Les antennes, pattes et le reste du corps sont noirs
mat, ainsi que l'extrémité des élytres. A noter que certaines formes
individuelles peuvent avoir un motif noir élytral très réduit.
Détermination : Simple, facile sur photo
Espèces proches :
Cette espèce est parfois confondue avec Stenurella bifasciata,
lepture qui présente aussi un motif rappelant un cœur sur les élytres
rouges mais qui est très nettement plus petit, moins large et avec un
abdomen rouge.
Période d’observation :
Adultes observés de mai à août, avec un net pic en juin et juillet.
Biologie-éthologie :
Larve
saproxylophage qui consomme du bois décomposé de nombreux arbres
feuillus et même parfois de résineux; principalement de chênes et
châtaignier. Cycle de développement long (3 ans) et globalement peu
connu. L'adulte est diurne et floricole; il s'observe notamment sur les
fleurs de ronces et les ombelles.
Biogéographie et écologie :
Espèce
répandue dans le nord du bassin méditerranéen, thermophile, atteignant
l'Europe centrale; commune en zone méditerranéenne et dans le Sud-ouest,
plus rare vers le nord. Cette espèce fréquente les zones de bocages,
les forêts et les lisières de bois, les garrigues et maquis ainsi que
certains jardins.
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.