The spotted bat is one of the most distinctive bats in North America due to its coloration, pelage, and large ears. Their unique fur coloration consists of a striking black and white pattern along with large pinkish-red ears; the white spots are about 15 mm in diameter and are found at the base of each ear, over each shoulder, and on the rump. This arid-land bat species is one of the larger vespertilionid bats in the western U.S., with an average total length of 107 to 115 mm, tail length of 47 to 50 mm, ear length of 45 to 50 mm, and weight of 8.1 to 11 g. Their echolocation calls are low frequency (15 to 8 kHz) and of moderate intensity (80 to 90 dB), suggesting that spotted bats are fast-flying, high-level foragers.
Overview
- Species Common Name Spotted Bat
- Species Scientific Name Euderma maculatum
- Federal Listing Status Species of Concern
- State Listing Status Sensitive
Ecoregions
Blue Mountains
Located in NE Oregon, the Blue Mountains ecoregion is the largest ecoregion in the state. It provides a diverse complex of mountain ranges, valleys, and plateaus that extend beyond Oregon into the states of Idaho and Washington.
Columbia Plateau
The Columbia Plateau ecoregion was shaped by cataclysmic floods and large deposits of wind-borne silt and sand earlier in its geological history. It is dominated by a rolling landscape of arid lowlands dissected by several important rivers, and extends from the eastern slopes of the Cascades Mountains, south and east from the Columbia River to the Blue Mountains.
East Cascades
The East Cascade ecoregion extends from the Cascade Mountains' summit east to the warmer, drier high desert and down the length of the state. This ecoregion varies dramatically from its cool, moist border with the West Cascades ecoregion to its dry eastern border, where it meets sagebrush desert landscapes.
Northern Basin and Range
The Northern Basin and Range ecoregion covers the very large southeastern portion of the state, from Burns south to the Nevada border and from the Christmas Valley east to Idaho. It is largely a high elevation desert-like area dominated by sagebrush communities and habitats.
West Cascades
The West Cascades ecoregion extends from east of the Cascade Mountains summit to the foothills of the Willamette, Umpqua, and Rogue Valleys, and spans the entire length of the state of Oregon. It is largely dominated by conifer forests, moving into alpine parklands and dwarf shrubs at higher elevations.