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  The Mammals of Texas - Online Edition

Seminole Bat
Order Chiroptera : Family Vespertilionidae : Lasiurus seminolus (Rhoades)

Seminole Bat (Lasiurus seminolus).  Photo by John L. Tveten.Description. Similar to Lasiurus borealis but rich mahogany brown, slightly frosted with whitish. Dental formula as in L. blossevillii. External measurements average: total length, 103 mm; tail, 44 mm; hind foot, 10 mm; ear, 11 mm; forearm, 39 mm.

Species distribution mapDistribution in Texas. From East Texas (oak-hickory, pine-oak, and longleaf pine forest region) eastward along the coast to Florida and the Carolinas.

Habits. The distribution of Seminole bats seems to be closely associated with the distribution of Spanish moss, the clumps of which provide roosting sites. The adult bats are solitary and roosts are usually occupied by a single individual, or a female with young. Bat-inhabited moss clumps are usually shaded from the sun and often on the west and southwest exposures of oak trees. Bats have been observed roosting in such clumps from 1 to 5 m above the ground.

The bats emerge from their daytime roosts early in the evening and forage among or above the crowns of the trees, over watercourses, and around clearings. They may occasionally alight on vegetation to capture prey. Their food consists of true bugs, flies, beetles, and even ground-dwelling crickets.

The two to four (normally two) young are born in late May or June. The young bats grow rapidly and are thought to be capable of flight at the age of 3 or 4 weeks.

Seminole bats are thought to be resident within their range in the Deep South. They do not hibernate in the true sense, but rather are active throughout the winter when weather conditions permit. Observations indicate that on days when the ambient temperature is below 20C the bats do not leave their daytime roosts, but whenever temperatures in the evening exceed 20C they emerge and take wing.

Photo credit: John L. Tveten.