Rediscovery, ecology, and identification of rare free-tailed bats (Chiroptera: Molossidae) in Costa Rica

Extension of the known geographic distribution of Greenhall’s Dog-faced Bat, Cynomops greenhalli Goodwin, 1958 (Chiroptera, Molossidae): first records in Costa Rica

“…Only Cynomops mexicanus has been previously reported as occurring in Costa Rica, where it was restricted to the dry forest of the Pacific lowlands, the southern limit of its known geographic distribution (Peters et al 2002;Pineda et al 2008;York et al 2019). Our observations, however, confirm the presence of C. greenhalli in Costa Rica, demonstrating that this species occurs in the Tropical Wet Forest and in the Caribbean of Costa Rica.…”

Molecular, morphological and acoustic identification of Eumops maurus and Eumops hansae (Chiroptera: Molossidae) with new reports from Central Amazonia

“…Although being one of the least known Eumops species, E. hansae had previously been captured in a wide range of habitats. These include forests off coastal areas (Álvarez-Castañeda and Álvarez 1991; Koopman 1982), tropical rainforests (Eisenberg 1989;Lee and Bradley 1992;Paglia et al 2012;Simmons and Voss 1998), savannas (Ibáñez and Ochoa 1989), premontane humid forests (Ochoa et al 1988), dry forests (Pineda et al 2008), and tropical lowland forest in hilly terrains (Graham and Barkley 1984). However, despite the broad range of habitats where it has been found, captures were almost always over ponds, large clearings, rivers and large lagoons.…”

Notes on the geographic range and distribution of two free-tailed bat species (Chiroptera, Molossidae) in Costa Rica

“…Some recent publications on free tailed bats from Costa Rica expand the distribution ranges of some (e.g. Eumops hansae (Sanborn, 1932), Pineda et al 2008) or confirm the presence of other species (e.g. Promops centralis Thomas, 1915, Rodríguez-Herrera et al 2014.…”

“…Despite growing information on the geographic distribution of free-tailed bat species in the Neotropics (e.g. Gregorin and Taddei 2000, Pineda et al 2008, Baker et al 2009, Bianconi et al 2009, Feijó et al 2010, Gregorin et al 2011, Rodríguez-Herrera et al 2014, Medina-Fitoria et al 2015, González-Terrazas et al 2016, there are still many distributional gaps, creating the illusion that some of the species are rare, patchily distributed, or absent in some areas (Reid 2009). This rarity seems to be a direct consequence of the difficulty in capturing these bats with traditional methods, such as placing mist nets at ground level (Reid 2009), and more complex inventory techniques, such as acoustic recordings that are not always available to all tropical bat researchers.…”

“…The presence of E. nanus in the Costa Rica is a controversial issue (Pineda et al 2008). Eumops nanus was allegedly reported in the Pacific and Atlantic lowlands of the country by Rodríguez and Chinchilla (1996) on the basis of 3 voucher specimens deposited in the Museo de Zoología, Universidad de Costa Rica (UCR175, UCR515, and UCR785).…”