|Scientific Name:||Mormoops megalophylla (Peters, 1864)|
|Taxonomic Notes:||The genus requires review and it may be split to two to five species (Davalos pers. comm.). New assessments should be made after this split. Three subspecies are currently recognized.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor(s):||Dávalos, L., Molinari, J. Mantilla, H., Medina, C., Pineda, J. & Rodriguez, B.|
|Reviewer(s):||Medellín, R. (Chiroptera Red List Authority) & Schipper, J. (Global Mammal Assessment Team)|
The species is very sensitive to all types of disturbance in the specialist caves in which it occurs. A minimum population size is required to maintain high cave temperature, which once reduced offspring do not survive. Besides that, it is listed as Least Concern because of its wide distribution, presumed large population, and occurrence in protected areas.
|Previously published Red List assessments:|
|Range Description:||This species is found throughout south Texas, south Arizona (USA), and Baja California (Mexico) south to northwest Peru and north Venezuela; Aruba, Curaçao, and Bonaire (Netherlands Antilles); It is also found on Trinidad; Margarita Island (Venezuela) (Simmons, 2005). It is discontinuous throughout its range in localised colonies (Molinari pers. comm.).|
As a species complex was previously much more widespread, local extinctions have occurred throughout most of its range (Davalos pers. comm.). Its area of occupancy is relatively small (Molinari pers. comm.).
Native:Belize; Colombia; Ecuador; El Salvador; Guatemala; Honduras; Mexico; Peru; Trinidad and Tobago; United States (Texas); Venezuela, Bolivarian Republic of
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It is locally common, and it is rarely in large groups (Emmons and Feer, 1997; Reid, 1997). The population of Venezuela is likely to occur in only ten caves (Molinari pers comm.). Found in hot caves (Rodriguez pers. comm.).|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||Occurs in specialised roosts in deep caves of karstic regions, this habitat is very rare (Molinari pers. comm.). A minimum population is required to maintain the temperature of the cave at around 40 centigrade, once the minimum threshold of individuals required to maintain the temperature. If the temperature is reduced, offspring do not survive (Molinari pers. comm.). In Ecuador occurs in cloud forest. At around 3,000 m in the Andes (Molinari pers. comm.).|
This bat feeds on insects, chiefly moths, its prey usually has body lengths of 5 to 6 mm. It often forages over water, on forest edges, gaps, or open spaces. It roosts in deep caves, where it hangs singly, separated from their neighbors, in colonies of up to several thousand, but usually of only a few individuals. In north Amerca, large concentrations are found in caves in October and November, but disappear by January - such movements are not always seasonal. Females produce one young per year, between April to June. Nursing females roost separately for males and non-reproductive females (Ceballos and Galindo, 1984; Emmons and Feer, 1997; Reid, 1997; Rezsutek and Cameron, 1993; Villa-R., 1966).
|Major Threat(s):||Cave collapse can cause localised extinctions, cave vandalism occurs in many countries, they are very sensitive to disturbance (Davalos and Molinari pers. comm.). In Belize tourism in caves is causing problems (Miller pers. comm.). In Guatemala there are problems with fire in caves (Jose Cajas pers. comm.).|
|Conservation Actions:||Conservation and protection of cave habitat, although this will not guarantee protection of the species (Davalos pers. comm.). Found in protected areas.|
|Citation:||Dávalos, L., Molinari, J. Mantilla, H., Medina, C., Pineda, J. & Rodriguez, B. 2008. Mormoops megalophylla. The IUCN Red List of Threatened Species 2008: e.T13878A4360307.Downloaded on 22 September 2017.|
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