Petit aphodien dont la tête et le pronotum bruns contrastent avec les élytres brun-jaune présentant des taches brunes symétriques. Critères diagnostics (de l'avant vers l'arrière) : a) la tête et le pronotum sont bruns, b) le pronotum a les côtés éclaircis et sa base postérieure est rebordée, c) le pronotum et les élytres ont les bords avec de longues ciliations, d) les élytres ont des taches brunes, e) la couronne de soies située à l'apex des métatibias est composée de soies inégales, f) le premier article du métatarse postérieur est aussi long que l'éperon apical supérieur du tibia.
Détermination
Des confusions sont probables. Espèces morphologiquement proches : les autres espèces du genre Chilothorax ont la tête, le pronotum et les taches élytrales noires et non pas brunes. Volinus sticticus (Panzer, 1798) a la tête ponctuée finement. Les espèces du genre Nimbus ont sur la partie antérieure de la tête de gros pores pilifères. Les espèces des genres Melinopterus et Nobiellus ont les élytres avec une unique large tache discale.
Période d'observation
Les adultes sont observables principalement au printemps et en été.
Biologie-éthologie
Espèce coprophage endocopride.
Biogéographie et écologie
L'espèce est présente aux Canaries, en Afrique méditerranéenne et jusqu'au Caucase.La présence en France est à confirmer.
Pierre JAY ROBERT(UFR3/Faculté Sciences Humaines & Sciences de l'Environnement Centre d'Ecologie Fonctionnelle et Evolutive),2021
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
