9. Kalinowski’s Little Mastiff Bat Mormopterus kalinowskii French: Molosse de Kalinowski / German: Kalinowski-Mastino-Fledermaus / Spanish: Mormoptero de Kalinowski Other common names: Kalinowski's Mastiff Bat Taxonomy. Nyctinomus kalinowskii Thomas, 1893, “Central Peru.” This species is monotypic. Distribution. Known from scattered localities on dry Pacific slope of the Andes from NW Peru to NW Chile and arid Andean valleys of S Peru. Descriptive notes. Head-body 40-53 mm, tail 26-38 mm, ear 10-16 mm, hindfoot 4-7 mm, forearm 32-38 mm; weight 3-8 g. Kalinowski’s Little Mastiff Bat is the largest species of New World Mormopterus, with short brownish gray dorsal pelage and paler ventral pelage. Head is conical, with pointed nose, naked face with slight vertical wrinkles on lips, relatively large eyes, and pale brown ears separate at bases but arising close together. Wings are dark brown and attach to ankle. Cranium has flat dorsal profile, lacrimal processes are not developed, basisphenoid pits are poorly developed, and anterior palate is emarginated. Dental formulais11/2,C1/1,P 1/2, M 3/3 (x2) = 28. Chromosomal complement has 2n = 48 and FN = 56. Habitat. Rocky, dry environments and urban areas from sea level up to elevations of c. 2600 m. Food and Feeding. Kalinowski’s Little Mastiff Bats eat chironomid flies. Breeding. Pregnant and lactating Kalinowski’s Little Mastiff Bats have been found in November—March. Activity patterns. Kalinowski’s Little Mastiff Bats roost in hillside crevices and also artificial shelters. Movements, Home range and Social organization. No information. Status and Conservation. Classified as Least Concern on The IUCN Red List. Population of Kalinowski’s Little Mastiff Bat is presumablylarge, and its habitat is not declining in extent or quality fast enough to qualify for a more threatened category. Bibliography. Aragéon & Aguirre (2014), Canals et al. (2005), Eger (2008), Flores (2016), Mann (1978), Pari etal. (2015), Thomas (1893b), Warner et al. (1974).

Published as part of Don E. Wilson & Russell A. Mittermeier, 2019, Molossidae, pp. 598-672 in Handbook of the Mammals of the World – Volume 9 Bats, Barcelona :Lynx Edicions on page 623, DOI: 10.5281/zenodo.6418279