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NRLD - 93425 | Euderma maculatum

Assessment ID
93425
Taxon name
Euderma maculatum
(J. A. Allen, 1891)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Euderma maculatum
(J. A. Allen, 1891)
Common name(s)
Spotted Bat (English), Oreillard maculé (Français)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Mammals
Kingdom
Animalia
Phylum
chordata
Class
mammalia
Order
chiroptera
Family
vespertilionidae
Genus
Euderma
Species
maculatum
Species authority
(J. A. Allen, 1891)
Location and scope
Specific locality or subnational name or regional name
Canada
Scope (of the Assessment)
National
Countries included within the scope of the assessment
Canada
Country ISO code(s)
CAN
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Special Concern; Préoccupante
Criteria system used
Modified IUCN

(see Assessment details)

Assessment rationale/justification
In Canada, this species occurs in the intermontane grasslands and ponderosa pine woodlands of southern British Columbia. It is a distinctively coloured bat that is unmistakable to identify. Unlike any other Canadian species of bat, its echolocation calls are within the range of human hearing. It roosts in crevices in large cliff faces. It is considered the easiest to count and best censused species of bat in Canada. Population estimates, based on relatively good census effort, suggests that there are fewer than 1000 adults. At this time, numbers appear to be stable, and there are relatively few threats to populations or habitats. Perhaps the biggest threat to this species is its small population size. Use of pesticides on its insect prey, loss of foraging habitat, and disturbance at roosting sites by rock climbers are potential threats. Rescue may be possible from neighbouring populations in the United States, however, movements of individuals between Canadian and US populations are not documented.; Au Canada, cette espèce se trouve dans les terres herbeuses et les terrains boisés de pins ponderosa du sud de la Colombie-Britannique. Il s'agit d'une chauve-souris de couleur distincte, ce qui permet de l'identifier sans aucun doute. Contrairement à toute autre espèce de chauve-souris au Canada, les cris d'écolocation de cette espèce peuvent être entendus par l'être humain. Cette espèce se repose dans les crevasses de grandes falaises. Cette espèce est considérée comme l'espèce de chauve-souris la plus recensée et la plus facile à dénombrer au Canada. Les estimations de populations, fondées sur des recensements relativement fiables, suggèrent qu'il existe moins de 1000 adultes. à‚¬ l'heure actuelle, les nombres semblent stables, et relativement peu de menaces pèsent sur les populations ou les habitats. La plus grave menace pour cette espèce est possiblement la petite taille de sa population. L'utilisation de pesticides sur des insectes qui sont ses proies, la perte de son habitat d'alimentation et la perturbation dans ses sites de repos par des alpinistes sont des menaces possibles. Une immigration de populations avoisinantes aux États-Unis est possible; cependant, le déplacement des individus entre les populations canadiennes et américaines n'a pas été documenté.
Assessment details
Year assessed
2004
Assessors/contributors/reviewers listed
Committee on the Status of Endangered Wildlife in Canada. Environment Canada.
Criteria system used
Modified IUCN
Reference for methods given
COSEWIC- Committee on the Status of Endangered Wildlife in Canada (2004)
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
British Columbia
Is there a map available in assessment?
Not_assigned
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Not_assigned
Threats and conservation measures listed
Threats listed in assessment
No information available
History
Designated Special Concern in April 1988. Status re-examined and confirmed in May 2004.; Espèce désignée ' préoccupante ' en avril 1988. Réexamen et confirmation du statut en mai 2004.
Publication
COSEWIC. 2004. Canadian Wildlife Species at Risk. Committee on the Status of Endangered Wildlife in Canada. Web site: https://www.canada.ca/en/services/environment/wildlife-plants-species/species-risk.html