199. Rosenberg’s Fruit-eating Bat Artibeus rosenbergi French: Dermanure de Rosenberg / German: Rosenberg-Fruchtvampir / Spanish: Artibeo de Rosenberg Other common names: Rosenberg’s Little Fruit-eating Bat Taxonomy. Artibeus (Dermanura?) rosenbergi Thomas, 1897, “Cachavi, [Esmeraldas,] N. Ecuador.” Artibeus rosenbergi, along with smaller species in Artibeus, were at one point considered to make up a monophyletic genus Dermanura, but after reinterpretation of molecular analyses, this clade was reassigned in Artibeus (subgenus Dermanura). Several authors listed A. rosenbergi as a synonym of A. watson: from Central America, but according to molecular and morphological analyses,it is a distinct species. Monotypic. Distribution. From NW Colombia (Choco Department) through the Pacific slope of the Andes to S Ecuador. Descriptive notes. Head-body 50-56 mm (tailless), ear 14-16 mm, hindfoot 8-12 mm, forearm 36-41 mm; weight 9-15 g. Rosenberg’s Fruit-eating Bat is small, with facial stripes and short and broad rostrum. Dorsal fur is brownish; fur is long, fluffy, and faintly tricolored. Ventral furis slightly paler than dorsum. Rostrum is short, with almost indistinct whitish facial stripes. Ears and noseleaf are pale brown, and base and margin of ears are sometimes edged white or cream. Fur covers more than one-half of each forearm. Wing membranes are brownish and attached to metatarsus. Tail membrane is pale brown, moderated in size, U-shaped, and sparsely haired. Dental formula i$s12/2,C1/1,P2/2. M 2/3 (x2) = 30. Skull is delicate, with inflated frontal and supraorbital area. Hypocone (talon) on M'is narrow; M, is comparatively smaller than in species of similar size; and M, is small, but it does not have defined cusps. Habitat. Commonly evergreen lowlands forests, secondary growth, and fruit groves from lowlands up to elevations of ¢. 1000 m (usually below 600 m). One population of Rosenberg’s Fruit-eating Bat in south-western Ecuador (Moromoro) appears isolated from the main distribution and is associated with a very humid forest. Food and Feeding. Based on resemblance to congeners and records in habitats in western Ecuador, Rosenberg’s Fruit-eating Bat is assumed to be mainly frugivorous. Breeding. No information. Activity patterns. Rosenberg’s Fruit-eating Bat is nocturnal. Movements, Home range and Social organization. No information. Status and Conservation. Classified as Data Deficient on The IUCN Red List (as Dermanura rosenbergi). There is a scarcity of ecological information clearly associated with Rosenberg’s Fruit-eating Bat, and additional research is needed to clarify its conservation status. Bibliography. Andersen (1908c), Carrera et al. (2010), Handley (1987), Hoofer et al. (2008), Reid (2009), Solari, Hoofer et al. (2009), Solari, Munoz-Saba et al. (2013), Thomas (1897a).

Published as part of Don E. Wilson & Russell A. Mittermeier, 2019, Phyllostomidae, pp. 444-583 in Handbook of the Mammals of the World – Volume 9 Bats, Barcelona :Lynx Edicions on page 576, DOI: 10.5281/zenodo.6458594