Cynomops abrasus, Temminck, 1827

Don E. Wilson & Russell A. Mittermeier, 2019, Molossidae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 598-672 : 640

53.

Cinnamon Dog-faced Bat

Cynomops abrasus

French: Cynomope a poil ras / German: Zimtfarbene Bulldogfledermaus / Spanish: Cynomop de pelo corto

Taxonomy. Dysopes abrasus Temminck, 1827 ,

“parties intérieures du Brésil.” Restricted by J. L. Eger in 2008 to “Votuporanga, Sao Paulo, Brazil.”

Based on a recent revision of the genus Cynomops , previous records from northern South America are herein attributed to C. mastivus . Monotypic.

Distribution. E of Andes from mid-elevation slopes of S Peru through Bolivia, Paraguay, and N Argentina to E & SE Brazil.

Descriptive notes. Head-body 71-86 mm, tail 33-42 mm, ear 17-20 mm, hindfoot 9-15 mm, forearm 40-6-49-4 mm; weight 24-4— 44 g. Males are larger than females. The Cinnamon Dog-faced Bat is the second largest Cynomops , exceeded in size and weight only by Thomas’s Dog-faced Bat ( C. mastivus ). Pelage is silky, but dorsal furis not long (4 mm at shoulder); dorsal pelage varies from light reddish brown to dark brown, while uniformly brown venteris slightly paler; dorsal hairs are weakly bicolored, with basal one-third pale buff. Face is blackish and virtually naked. Upper lip and dorsal border of narial region are smooth. Triangular blackish ears are slightly separated from each other on forehead (space is less than 4 mm). Patagium, feet, and tail are also blackish; propatagium is narrow; posterior plagiopatagium is inserted lateral to base of feet. There is reddish brown fur along basal one-third of forearm and along adjacent propatagium. A patch of fur extends from posterodorsal surface of distal plagiopatagium, next to wrist, to fourth dactylopatagium. Skull has anterior face of lacrimal ridge sloping smoothly to forehead, and nasal process of premaxilla is reduced, with lateral margin of external nares concave. Incisive foramina are located much posterior to accessory foramen, and arrangement of the three foramina (two incisive and one accessory) forms an isosceles triangle. Mandible is gracile and relatively straight, not convex, along its length and trigonid on Mis deep and narrow. Chromosomal complement has 2n = 34 and FN = 60 or 64.

Habitat. Tropical lowland rainforest in south-eastern Peru and Bolivia, including the Chiquitano dry forest. Low to medium elevations in the Atlantic rainforest, including humid and semideciduous types, and associated vegetation, such as mangroves. In Brazil, the Cinnamon Dog-faced Bat is also found in the cerrado savanna (shrubbyarboreal and grassland), caatinga—cerrado contact zone, and Pantanal wetlands. It also occurs in floodable lands, deciduous forests and cerrado savanna of eastern Paraguay, and dense forests in Argentina. It is present in primary and secondary forests and urban areas. Elevational range is from sea level to 1100 m.

Food and Feeding. The Cinnamon Dog-faced Batis an aerial insectivore, and insects of the orders Coleoptera , Diptera , and Hemiptera have been recorded in its diet in Bolivia.

Breeding. In south-eastern Brazil, there are records of pregnant females in January and males with scrotal testes in June and August. Lactating females were recorded in March in Argentina, and post-lactating females were caught in December in Bolivia.

Activity patterns. The Cinnamon Dog-faced Bat is usually caught early in the night (c.30 minutes after sunset) and just before sunrise. It has been captured in mist nets set close to or over artificial lakes. It is commonly seen sheltering in hollow trees, but can also use caves and buildings as roosts.

Movements, Home range and Social organization. In south-eastern Brazil, 13 females and one male were recorded roosting in a tree hollow of Pseudobombax marginatum (Malvaceae) , and another male was observed roosting in the roof of an occupied house, together with Pallas’s Mastiff Bats ( Molossus molossus ).

Status and Conservation. Classified as Data Deficient on The IUCN Red Lust.

Bibliography. Acosta & Paca (2010), Barquez (2004), Eger (2008), Esbérard & Bergallo (2005), Fischer et al. (2015), Idoeta et al. (2012), Lopez-Gonzalez (2004), Lourencgo et al. (2010), Mares et al. (1981), Moras et al. (2016), Morielle-Versute et al. (1996), Olimpio et al. (2016), Passos et al. (2010), Sartore et al. (2017), Siles (2007a), Sousa et al. (2013).

Figures

42. Mato Grosso Dog-faced Bat (Neoplatymops mattogrossensis), 43. Peale’s Free-tailed Bat (Nyctinomops aurispinosus), 44. Pocketed Free-tailed Bat (Nyctinomops femorosaccus), 45. Broad-eared Free-tailed Bat (Nyctinomops laticaudatus), 46. Big Free-tailed Bat (Nyctinomops macrotis), 47. Equatorial Dog-faced Bat (Cabreramops aequatorianus), 48. Rufous Dog-faced Bat (Molossops neglectus), 49. Dwarf Dog-faced Bat (Molossops temmancku), 50. Freeman's Dog-faced Bat (Cynomops freemani), 51. Mexican Dog-faced Bat (Cynomops mexicanus), 52. Southern Dog-faced Bat (Cynomops planirostris), 53. Cinnamon Dog-faced Bat (Cynomops abrasus), 54. Greenhall’s Dog-faced Bat (Cynomops greenhalli), 55. Thomas's Dog-faced Bat (Cynomops mastivus), 56. Miller's Dog-faced Bat (Cynomops milleri), 57. Waorani Dog-faced Bat (Cynomops tonkigui)

Distribution. E of Andes from mid-elevation slopes of S Peru through Bolivia , Paraguay , and N Argentina to E & SE Brazil .