Eumops hansae, Sanborn, 1932

Don E. Wilson & Russell A. Mittermeier, 2019, Molossidae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 598-672 : 632

34.

Sanborn’s Bonneted Bat

Eumops hansae

French: Eumope de Hansa / German: Sanborn-Bulldogfledermaus / Spanish: Eumops de Hansa

Taxonomy. Fumops hansae Sanborn, 1932 ,

“ Colonia Hansa, near Joinville, Santa Cathenna, Braal.”

Populations of E. hansae in Central America and South America might be separate species, but additional taxonomic research is needed. Monotypic.

Distribution. Scattered localities in S Mexico (Chiapas), Belize, N Honduras, Costa Rica, E Panama, Venezuela, Guyana, French Guiana, NE Ecuador, N Peru, Brazil, and N Bolivia.

Descriptive notes. Head—body 60-80 mm, tail 24-41 mm, ear 17-23 mm, hindfoot 8-12 mm, forearm 36-42 mm; weight 11-22 g. Males are slightly larger than females. See general characteristics of the genus under the Black Bonneted Bat ( E. auripendulus ). Dorsal pelage of Sanborn’s Bonneted Bat is dark brown; venteris grayish brown, with hairs having paler bases. Hairs are short (2-3 mm) and velvety. Ears extend to nose tip. Tragus is broad and square-shaped. Adult males have well-developed gular gland on throat. I? is thin and slightly curved, with tips separated by 1 mm. Chromosomal complement has 2n = 48 and FN = 56.

Habitat. Tropical lowland dry forests at elevations up to c¢. 600 m. Sanborn’s Bonneted Bats occur in dry forests in Costa Rica, white sand forests of dakama ( Dimorphandra conjugata) and wallaba ( Eperua falcata , both Fabaceae ) in north-eastern Guyana, and savannas in Guyana, Brazil, and Bolivia.

Food and Feeding. Stomach contents of Sanborn’s Bonneted Bats contained crickets ( Gryllidae ) in Bolivia and beetles ( Coleoptera ) and flies ( Diptera ) in Costa Rica.

Breeding. Sanborn’s Bonneted Bats were pregnant in September—-October in Guyana. Females were lactating in June-July and November in Guyana and August in Costa Rica.

Activity patterns. Sanborn’s Bonneted Bats have been netted near water including streams, in middle canopy of forest (10-13 m) over a narrow dirt road, and a forest gap 30 m aboveground. One individual was found roosting in a dead tree hole in a lagoon.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Least Concern on The IUCN Red List.

Bibliography. Anderson (1997), Best et al. (2001), Brosset & Charles-Dominique (1991), Eger (1977 2008), Gardner et al. (1970), Graham & Barkley (1984), Handley (1955a, 1976), Ibanez & Ochoa (1989), Lim, B.K. et al. (2018), Lopez-Baucells, Rocha, Tavares et al. (2018), Medellin et al. (1992), Pineda et al. (2008), Reid (1997), Reid et al. (2000), Sanborn (1932b), Simmons & Voss (1998), Varella-Garcia et al. (1989).

Figures

22. Big Crested Mastiff Bat (Promops centralis), 23. Davison’s Mastiff Bat (Promops davisoni), 24. Brown Mastiff Bat (Promops nasutus), 25. Black Bonneted Bat (Eumops auripendulus), 26. Common Dwarf Bonneted Bat (Eumops bonariensis), 27. Chimera’s Bonneted Bat (Fumops chimaera), 28. Chiribaya’s Bonneted Bat (Eumops chiribaya), 29. Big Bonneted Bat (Eumops dabbener), 30. Delta Bonneted Bat (Eumops delticus), 31. Fierce Bonneted Bat (Fumops ferox), 32. Florida Bonneted Bat (FEumops floridanus), 33. Wagner's Bonneted Bat (Fumops glaucinus), 34. Sanborn’s Bonneted Bat (Eumops hansae), 35. Guianan Bonneted Bat (Eumops maurus), 36. Northern Dwarf Bonneted Bat (Fumops nanus), 37. Patagonian Dwarf Bonneted Bat (Eumops patagonicus), 38. Western Bonneted Bat (Eumops perotis), 39. Trumbull’s Bonneted Bat (Eumops trumbulli), 40. Underwood’s Bonneted Bat (Eumops underwoodi), 41. Wilson’s Bonneted Bat (Eumops wilsoni)

Distribution. Scattered localities in S Mexico (Chiapas), Belize , N Honduras , Costa Rica , E Panama , Venezuela , Guyana , French Guiana, NE Ecuador , N Peru , Brazil , and N Bolivia .