Corps allongé, peu convexe, en entier d'un vert bronzé brillant avec de petites plaques lisses noires sur les élytres, l'apex élytral longuement acuminé. Face supérieure du corps à ponctuation forte et assez dense mais laissant bien visible la surface très brillante du tégument. Les antennes sont courtes et épaisses. Le pronotum est fortement transverse, nettement cordiforme.
Identification :
difficile.
Confusions possibles :
Dicerca aenea est moins brillant et plus sombre sans plaques lisses sur les élytres. Dicerca alni est plus fortement ponctué, moins brillant et ne se trouve pas dans le même type de milieu.
Périodes d'observation (adultes) :
avril à octobre.
Biologie-éthologie :
la larve est xylophage et se développe dans le bois mort de hêtre. Les adultes ne sont pas floricoles et se trouvent sur les arbres qui ont nourri leurs larves.
Biogéographie-écologie :
Boisements de hêtre d'Europe, en plaine dans la moitié nord et en montagne plus au sud.
Références : Schaefer L. 1950 : Les Buprestides de France. Tableaux analytiques des Coléoptères de la faune franco-rhénane. France, Rhénanie, Belgique, Hollande, Valais, Corse. Famille LVI. Miscellanea entomologica, Supplément, 511 p.
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.
French Version
