1. Interactive Key to the Bats of Ohio Dear Friends and Colleagues: We hope you enjoy this interactive key to the bats of Ohio. This product is being offered free of charge and may be shared with anyone who has an interest in Ohio bats and conservation of our natural resources. If you find this product useful, we ask only that you make a charitable donation to the Las Gralarias Foundation. This organization was founded by one of the creators of this interactive key. The goal of Las Gralarias Foundation Inc. is to raise funds for projects and programs of Reserva Las Gralarias, located in the parish of Mindo, Ecuador, including the purchase of adjacent and nearby lands that will enhance protection for rare and endemic birds, plants and other animals as well as support reserve management, reforestation efforts, biological research, environmental education projects, scholarships, and appropriate tourism programs. Information about Las Gralarias Foundation (including donation forms) can be found at: http://lasgralariasfoundation.org Click to Begin Interactive Key

2. INTERACTIVE KEY TO OHIO BATS Production and photos by: Bob Dodd, Tim Krynak, and Marlo Perdicas Begin

3. Click here Key to Ohio Bats Ears longer than 26 mm Ears less than 24 mm Rafinesque’s Big-eared bat (Corynorhinus rafinesquii) Dorsal surface of tail membrane furred Dorsal surface of tail membrane sparsely or not furred Back Click here Las Gralarias Information

4. Home Forward half of tail membrane furred Black fur with silver tips Silver-haired bat (Lasionyceris noctivagans) Migrant in Ohio found mostly during May and September – November. Entire tail membrane furred Forearm less than 44mm Fur reddish-orange Sexually Dimorphic Forearm greater than 44mm Fur dark but distinctly frosted click here Back Click Here More Silver-haired Bat Photos

5. Red Bat (Lasiurus borealis) Ohio’s most common solitary tree bat Home Back More Red Bat Pictures Click Here

6. Hoary Bat (Lasiurus cinereus) Ohio’s Largest bat Home Back Click Here More Hoary Bat Photos

7. Home Back Naked Muzzle Short rounded tragus Muzzle furred Pink forearms contrasting with black wing membrane Tragus short and rounded click here Wing membrane brown with brown forearms Forearm greater than 41 mm Long silky chocolate brown fur Forearm less than 41 mm Fur not long and silky one upper incisor click here

8. Home Back Tragus long (more that half the length of ear) and pointed. Tail relatively long with strong striations in membrane Muzzle long usually lacking fur around eyes Northern long-eared myotis (Myotis septentrionalis) Small bat that is common in the forest. click here Tragus less than half the length of ear and rounded

9. Calcar keeledCalcar not keeled HomeBack click here Keeled Calcar

10. Home Back Fur short dull brownish-grey or dark with pinkish cast, sometimes tri-colored No black facial mask Forearm 35-41 mm Toe hair very short and sparse, does not extend beyond claws Indiana Bat (Myotis sodalis) Federally Endangered Fur brown with golden sheen Ears and facial mask black Forearm 30-36 mm Foot 6mm or less Tragus long (more that half the length of ear) and pointed. Tail relatively long with strong striations in membrane Muzzle long usually lacking fur around eyes click here More Photos click here

11. HomeBack Indiana Bat (Myotis sodalis) Federally Endangered. Distribution lies throughout the state

12. HomeBack Ears >16mm, extend beyond snout Tragus pointed and long about half length of ear Striations on tail membrane Long glossy fur Tragus short with rounded tip Some toe hair extend beyond the tips of the claws Little Brown Bat (Myotis lucifugus) Northern long-eared myotis (Myotis septentrionalis) Little Brown Bat Pictures Click Here Northern long-eared Pictures

13. Home Back Eastern Pipistrelle (Pipistrellus subflavus) One of the more common bats found in the eastern forests of the U.S. Smallest bat of northeastern Ohio Click Here More Pipistrelle Pictures

14. Home Back Tragus long (more that half the length of ear) and pointed. Tail relatively long with strong striations in membrane Muzzle long usually lacking fur around eyes Northern long-eared myotis (Myotis septentrionalis) Small bat common in our forests

15. Big Brown Bat (Eptesicus fuscus) One of the most common bats in Ohio often found in human structures Home BackClick Here More Big Brown Pictures

16. Home Back Evening bat (Nycticeius humeralis) Rare bat in Ohio More common in the south

17. Silver-haired bat Notice the white tips to the fur and the short rounded ears with white border on the front HomeBack

18. Eastern pipistrelles. Notice the gray color of the pups and reddish color of adults Eastern pipistrelle in a cave. Notice the pink forearm Home Back

19. Notice the cream color around the muzzle that gives the appearance of a mane Home Back

20. Little brown bats. Notice the long glossy fur Little brown bats in a bat house Home Back

21. Male red bat is brightly colored Home Back Coloration of female is a dull version of the male Notice the hair on the wing and tail membranes of both sexes

22. Big brown bats in a barn. Notice the naked muzzle that forms a black facial mask Home Back

23. Home Back Tragus long (more that half the length of ear) and pointed. Tail relatively long with strong striations in membrane Muzzle long usually lacking fur around eyes Northern long-eared myotis (Myotis septentrionalis) Small bat common in our forest.

24. Very rare in Ohio, only two records from caves in Adams County Rafinesque’s Big-eared bat (Corynorhinus rafinesquii) Back

25. Home Back Eastern Small-footed Bat (Myotis leibii) Rarely found in Ohio. Roosts in rock crevasses or caves.