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Petit chilopode géophilomorphe, vermiforme, ayant de 29 paire de pattes. Coloration jaune pâle assez uniforme ; la tête étant un peu plus foncée, roussâtre. Nombreuses soies dispersées sur la tête et le corps. Antennes longues, plus de sept fois plus longues que la longueur de l'écusson céphalique. Tergite forcipulaire quasi trapézoïdal.
Détermination
Difficulté moyenne. Pour le myriapodologiste, sa répartition extrêmement localisée et son habitat, associés à son faible nombre de paires de pattes, à la longueur de ses antennes et à d'autres critères consultables dans la description originale, le distinguent sans grande difficulté de tous les autres géophilomorphes français sous la loupe binoculaire.
Espèces proches
Le petit Geophilus ribauti, (sub)montagnard, pourrait éventuellement prêter à confusion, mais il possède davantage de pattes (31 à 35, voire rarement 37 pour les femelles) ; quoique l'amplitude de G. persephones soit probablement sous-estimée (peut-être que la femelle pourrait avoir 31 paires de pattes ?). Les antennes de G. ribauti sont plus courtes et il n'est qu'accidentel dans les grottes (trogloxène).
Période d'observation
Inconnue, potentiellement toute l'année.
Biologie-éthologie
Prédateur d'autres petits invertébrés. Tout comme chez d'autres Geophilidae, la femelle du Géophile de Perséphone s'occupe probablement de sa progéniture avec soin.
Biogéographie et écologie
Répartition extrêmement localisée, micro-endémique du gouffre de la Pierre Saint-Martin (Pyrénées-Atlantiques). Espèce à enjeu majeur de conservation, jugée « vulnérable » (VU) d'après la méthode Liste rouge de l'UICN.
Sources
IORIO É., 2014. Catalogue biogéographique et taxonomique des chilopodes (Chilopoda) de France métropolitaine. Mémoires de la Société Linnéenne de Bordeaux, 15 : 1-372.
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.