Uroderma magnirostrum, Davis, 1968

Velazco, Paúl M., Voss, Robert S., Fleck, David W. & Simmons, Nancy B., 2021, Mammalian Diversity And Matses Ethnomammalogy In Amazonian Peru Part 4: Bats, Bulletin of the American Museum of Natural History 2021 (451), pp. 1-201 : 115-117

publication ID

https://doi.org/ 10.1206/0003-0090.451.1.1

persistent identifier


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scientific name

Uroderma magnirostrum


Genus Uroderma Peters, 1865

Uroderma bilobatum Peters, 1865

VOUCHER MATERIAL (TOTAL = 30): Boca Río Yaquerana (FMNH 89082), Isla Padre (MUSM 4212, 4365), Estación Biológica Madre Selva (MUSM 33146), Jenaro Herrera (AMNH 278506; MUSM 872, 4220), Nuevo San Juan (MUSM 13281), Quebrada Betilia (MUSA 15192, 15202), Quebrada Esperanza (FMNH 89084, 89086, 89130, 89131, 89136), Quebrada Lobo (MUSA 15114), Quebrada Vainilla (LSUMZ 28433), Río Blanco (MUSA 15085, 15091, 15103), Santa

FIG. 27. Photographs of A, an adult Sturnira magna captured at Quebrada Blanco; and B, an adult Uroderma magnirostrum captured at El Chino Village. Photographs by Marco Tschapka (A) and Brock Fenton (B).


External and Craniodental Measurements (mm) and Weights (g) of Uroderma bilobatum

and U. magnirostrum from the Yavarí-Ucayali Interfluve

Cecilia (FMNH 87038–87043, 87084, 89127– 89129); see table 50 for measurements.

UNVOUCHERED OBSERVATIONS: One individual of Uroderma bilobatum was captured at Tapiche during the Sierra del Divisor Rapid Biological Inventory (Jorge and Velazco, 2006). Additionally, an unspecified number of individuals of U. bilobatum were captured at Quebrada Pobreza during the Tapiche-Blanco Rapid Biological Inventory (Escobedo-Torres, 2015), one individual was captured at the Quebrada Curacinha locality during the Yavarí Rapid Biological Inventory (Escobedo, 2003), and we captured one individual at Tahuayo Farm on 19 February 2019.

IDENTIFICATION: The taxonomy and systematics of the Uroderma bilobatum species complex was recently reviewed by Mantilla-Meluk (2014) and Cuadrado-Ríos and Mantilla-Meluk (2016), who recognized four species: U. bilobatum ; U. convexum and U. davisi , both formerly treated as subspecies of U. bilobatum ; and a newly described species, U. bakeri . As a result, U. bilobatum (sensu stricto) is now restricted to lowland South American populations east of the Andes. Uroderma bilobatum can be distinguished from other congeneric species by the following combination of characteristics: brownish dorsal and ventral pelage; prominent facial stripes; dorsum of uropatagium nearly naked; rostrum not elevated and with a dorsal concavity; interorbital constriction not swollen; and junction of nasals and maxillae forms an obtuse angle in lateral view (Mantilla-Meluk, 2014). Descriptions and measurements of U. bilobatum were provided by Goodwin and Greenhall (1961), Husson (1962, 1978), Ceballos-Bendezú (1968), Davis (1968), Carter and Dolan (1978), Swanepoel and Genoways (1979), Brosset and Charles-Dominique (1990), Simmons and Voss (1998), Lim et al. (2005), Mantilla-Meluk (2014), and Velazco and Patterson (2019). Three subspecies are currently recognized: U. b. bilobatum (Amazonian lowlands and the Atlantic Forest); U. b. thomasi (middle elevations on the eastern slopes of the Andes in Ecuador, Peru, and Bolivia); and U. b. trinitatum ( Trinidad) (Mantilla-Meluk, 2014; Cuadrado-Ríos and Mantilla-Meluk, 2016).

Ceballos-Bendezú (1968), Fleck et al. (2002), and Medina et al. (2015) correctly identified their material from Quebrada Esperanza, Nuevo San Juan, Quebrada Betilia, Quebrada Lobo, and Río Blanco. The voucher material we examined from the Yavarí-Ucayali interfluve conforms to previous descriptions of Uroderma bilobatum bilobatum , with measurements that fall within the range of size variation previously documented for the nominotypical subspecies.

REMARKS: Of nine captures of Uroderma bilobatum accompanied by ecological information from our region, six were made in groundlevel mistnets and three in elevated nets. Of these mistnet captures, three were in primary forest, two were in secondary vegetation, three were in clearings, and one was in a swampy mineral lick (collpa).