Lophostoma evotis (W. B. Davis & D. C. Carter, 1978)

Don E. Wilson & Russell A. Mittermeier, 2019, Phyllostomidae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 444-583 : 504-505

34.

Davis's Round-eared Bat

Lophostoma evotis

French: Lophostome de Davis / German: Davis-Rundohrblattnase / Spanish: Lofostoma de Davis

Taxonomy. Tonatia evotis W. B. Davis & D. C. Carter, 1978 ,

“ 25 km. SSW Puerto Barrios, 75 m., department of Izabal, Guatemala.” Although originally described in the genus Tonatia, T. E. Lee and collaborators in 2002 reassigned evotis to Lophostoma after phylogenetic analysis.

Distribution. S Mexico in S Veracruz, NE Oaxaca, S Yucatan Peninsula, and Chiapas, also in Belize, N Guatemala, and N Honduras.

Descriptive notes. Head-body 49-70 mm, tail 11-18 mm, ear 31-35 mm, hindfoot 13 16 mm, forearm 47-53 mm; weight 14-23 g. Davis’s Round-eared Bat is medium-sized compared with other species of Lophostoma . Its sister species, the White-throated Roundcared Bat ( L. silvicola ), is larger and has more powerful teeth and two white patchesat bases of ears. Fur of Davis’s Round-eared Batis uniformly pale gray to dark gray. There is very little contrast between dorsum and venter. There are no pale patches in bases of ears. Fur is short and sparse. Tail is short and completely embedded in uropatagium. Noseleaf is simple and triangular, and horseshoe or lower end ofnoseleat is fused with upper lip. Numerous small warts cover chin, and two larger pads form V-shaped groove. Face is nearly naked. Eyes are small and dark brown. Ears curl backward when held by a human. Davis’s Round-eared Bats have four upper and two lower incisors.

Habitat. Relatively intact humid tropical forests rainforests at elevations below 100 m. Davis's Round-eared Bat probably roosts in termite nests, similar to other species of Lophostoma .

Food and Feeding. Stomachs of four Davis's Round-eared Bats collected in southern Mexico contained remains of katydids and beetles.

Breeding. Female Davis’s Round-eared Bats carry one fetus. Births seem to be synchronized around onset of rainy season.

Activity patterns. No information.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Least Concern on The [UCN Red List. Because Davis’s Round-eared Bats are sensitive to habitat disturbance by humans and have a relatively small distribution, they have been federally listed as threatened in Mexico.

Bibliography. Davis & Carter (1978), Lee et al. (2002), Medellin & Arita (1989).

Figures

24. Long-legged Bat (Macrophyllum macrophyllum), 25. Fringe-lipped Bat (Trachops cirrhosus), 26. Striped Hairy-nosed Bat (Gardnerycteris crenulatum), 27. Keenan's Hairy-nosed Bat (Gardnerycteris keenani), 28. Koepcke’s Hairy-nosed Bat (Gardnerycteris koepckeae), 29. Kalko’s Round-eared Bat (Lophostoma kalkoae), 30. Pygmy Round-eared Bat (Lophostoma brasiliense), 31. Carriker’s Round-eared Bat (Lophostoma carrikeri), 32. Schulz’s Round-eared Bat (Lophostoma schulzi), 33. Western Round-eared Bat (Lophostoma occidentale), 34. Davis's Round-eared Bat (Lophostoma evotis), 35. White-throated Round-eared Bat (Lophostoma silvicola), 36. Greater Round-eared Bat (Tonatia bidens), 37. Stripe-headed Round-eared Bat (Tonatia saurophila), 38. Pale-faced Bat (Phylloderma stenops), 39. Pale Spear-nosed Bat (Phyllostomus discolor), 40. Lesser Spear-nosed Bat (Phyllostomus elongatus), 41. Greater Spear-nosed Bat (Phyllostomus hastatus), 42. Guianan Spear-nosed Bat (Phyllostomus latifolius), 43. Woolly False Vampire Bat (Chrotopterus auritus), 44. Southern Golden Bat (Mimon bennettii), 45. Cozumelan Golden Bat (Mimon cozumelae), 46. Spectral Bat (Vampyrum spectrum)

Distribution. S Mexico in S Veracruz, NE Oaxaca, S Yucatan Peninsula, and Chiapas, also in Belize , N Guatemala , and N Honduras .