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Montana Animal Field Guide

Montana Field Guides

Yuma Myotis - Myotis yumanensis

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Potential Species of Concern

Global Rank: G5
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
FWP Conservation Tier: 2

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General Description
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General Distribution

Western Hemisphere Range

 


Distribution Comments
The species' distribution in the state is uncertain due to the difficulties in differentiating it from the Little Brown Myotis (Myotis lucifugus). Only summer records from acoustic surveys in northwestern Montana are known at this time.

Summary of Observations Submitted for Montana
Number of Observations: 23

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Relative Density

Recency

 

(Records associated with a range of dates are excluded from time charts)



Ecology
Myotis yumanensis is usually found in large mixed colonies together with the Little Brown Myotis (Hoffmann and Pattie 1968).

Reproductive Characteristics
This bat has only one young per year, and nothing is known about the mating and social system or natal sex ratio of this species. Mating is expected to be non-selective as in the Little Brown Myotis (Milligan 1993).

References
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Citation for data on this website:
Yuma Myotis — Myotis yumanensis.  Montana Field Guide.  Montana Natural Heritage Program and Montana Fish, Wildlife and Parks.  Retrieved on May 23, 2013, from http://FieldGuide.mt.gov/detail_AMACC01020.aspx
 
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