It has a body and head length of about 73-81 mm (2.9-3.2 in); a forearm length of about 57–67 mm (2.2–2.6 in), and a tail length of about 47–70 mm (1.9–2.8 in). Male desert long-eared bats weigh 18–20 g (0.63–0.71 oz).[3] They have nearly horizontally directed ears, which use a band of skin to connect across the forehead and are about 40 mm in length. The desert long-eared bat has a pale sandy and dark brown upper part, with a whitish bottom. It has a similar skull and similar teeth to the Eptesicus.[4] Some specimens of this species have two sets of mammae in their pectoral muscles, which is unique for mammals. These mammae may not be functional.[4]
This species normally inhabits dry, arid, rocky, and barren regions.[5] One pair of these bats was found living in a hill's crevice in the Negev Desert. This bat has also been found in buildings.
Otonycteris hemprichii has a flight pattern described as "floppy and slow".[4]
This species is assumed to be carnivorous due to its body mass, low wing loading, and low aspect ratio.[6] This bat likely forages close to the ground, using echolocation to detect large flying or surface-dwelling invertebrates. Through echolocation, the bats can detect scorpions as they walk. They feed mostly on arachnids and orthopterans that are seized directly from the ground.[7][8]AnIsraeli study found that up to 70% of the bat droppings contained scorpion fragments, including the highly venomousPalestine yellow scorpion along with other less venomous species. The bat catches the scorpion, biting its head off. The bats are often stung in the face with the scorpion’s stinger with no recorded signs of toxicity, suggesting that the bats are immune to the venom.[9][10]
Otonycteris hemprichii on a 2001 stamp of Uzbekistan
Breeding colonies consisting of 3–15 females have been discovered. Seven pregnant females, most with two embryos, were found in central Asia.[8][11] In a deserted hut in Jordan three pregnant females, all of whom carried two embryos were found.[12]
^Gaisler, J., Madkour, G., & Pelikán, J. (1972). On the bats (Chiroptera) of Egypt. Academia.
^ abcNowak, R. M. (1994). Walker's bats of the world. JHU Press
^Harrison, D. L. (1964). The Mammals of Arabia: Insectivora. Chiroptera. Primates (Vol. 1). E. Benn.
^Norberg, Ulla M.; Fenton, M. Brock (1988). "Carnivorous bats?". Biological Journal of the Linnean Society. 33 (4): 383–394. doi:10.1111/j.1095-8312.1988.tb00451.x.
^Holderied, M.; Korine, C.; Moritz, T. (2010). "Hemprich's long-eared bat (Otonycteris hemprichii) as a predator of scorpions: Whispering echolocation, passive gleaning and prey selection". Journal of Comparative Physiology A. 197 (5): 425–433. doi:10.1007/s00359-010-0608-3. PMID21086132. S2CID25692517.
^Roberts, T. J., & Bernhard (principe d'Olanda.). (1977). The mammals of Pakistan. London: E. Benn.
^Atallah, S. I. (1977). "Mammals of the eastern Mediterranean region: their ecology, systematics and zoogeographical relationships". Säugetierkundliche Mitteilungen 25:241–320.
^Aulagnier, S.; Mein, P. (1985). "Note sur la présence d'Otonycterus hemprichi Peters, 1859 au Maroc". Mammalia. 49 (4): 582–584.
^Corbet, G. B. (1978). The mammals of the Palaearctic region: a taxonomic review. British Museum (Natural History), p. 341. ISBN9780801411717
^Fairon, J. (1980). "Deux nouvelles especes de cheiropteres pour la faune du Massif de l'Air (Niger): Otonycteris hemprichi Peters, 1859 et Pipistrellus nanus (Peters, 1852). J. Goemaere.
