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Seminole Bat, Lasiurus seminolis

Lasiurus borealis (on the right) & L. seminolis (on the left) captured in mist net  27 July 2000.  Clay Co., FL                                                    


Echolocation: Typical Lasiurine pattern of oscillating calls, curvilinear  fish hook shape fluctuating minimum frequency (~35-40K). Due to the similarity of their echolocations calls, files characteristic of these species were combined and identified as LASEBO.  Some calls can be confused with NYHU

Florida Distribution:  Peninsular FL

Roosting Behavior: Solitary.   Prefers Spanish moss

Foraging Behavior: Often emerges early in the evening.  Mostly moths. Also beetles, leaf & plant hoppers, ants and flies

Reproduction: Mate in fall, 1-4 pups born late May - mid June.  In FL, pups & adults with pups often      found grounded June & July.

Management and Conservation Recommendations:  Education programs aimed at       the public as well as preservation of forested lands particularly deciduous forests & oak   hammocks with an abundance of Spanish moss will help protect these and other bat species.

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Urban Bat Status







Common  / SNR




Mass g

FA mm


Total length



9 – 14

35 - 45

290 – 340

89 - 115

Small, blunt


Long fur, with frosted appearance. Tail membrane completely furred above. White  markings on shoulders and wrists.   Female LABO & LASE sometimes confused.   LASE color Is much deeper mahogany.  Tail and wing membranes dark

*Lasiurus is the only bat genus with four nipples