Vertebrate fauna of SE Asia
  

 

   
Home  
覧覧覧覧覧  
SE Asia fauna ...  
   
Primates
 Carnivorans
 Large Mammals
 Small Mammals
 Mammal calls
 Bats
覧覧
Birds
覧覧
 Snakes
 Lizards & Crocodilians
 Turtles
覧覧
 Amphibians
 Tadpoles
 Frog calls
覧覧
Freshwater Fishes
 Marine & Brackish Fishes
覧覧
Species Lists
 





 


 
覧覧覧覧覧  
SE Asia Vert Records (SEAVR) ...  
   
Philippines Records
  Indochina Records
  Indonesia & PNG Records
 
覧覧覧覧覧  
New Guinea herptiles ...  
Snakes   Lizards   Frogs  
覧覧覧覧覧  
   
  New or updated pages ...
 
 
     
 
     
 
     
 
覧覧覧覧覧  
 

Search this site ...

 
 


   

 
  覧覧覧覧覧  
 

Links :
My wife, Sophia's website ... super-healthy, vegan delights :
Vegan-Inspired.com

 
  覧覧覧覧覧  
 


Email :


Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2023

 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Lesser Sheath-tailed Bat
   
   

Fig 1


Fig 2


Fig 3


Fig 4
 

Fig 5
 

Fig 6
 

Fig 7
 



  

 

Order : CHIROPTERA
Family : Emballonuridae
Species : Emballonura monticola

Forearm Length : up to 4.5 cm
Weight : up to 5.5 grams

The genus Emballonura comprises eight species of sheath-tailed bat which occur in Southeast Asia, eastern Indonesia, Papua New Guinea and islands of the western Pacific Ocean.

Sheath-tailed bats are so-called because of their short tail which protrudes from the interfemoral membrane connecting their hind legs; when the legs are stretched out the tail disappears into the sheath.

The Lesser Sheath-tailed Bat Emballonura monticola is the smallest of the eight species, typically weighing around 5.5 grams.

This small bat roosts near cave entrances, in rock crevices or under rock overhangs, in large tree holes and beneath the buttresses of fallen trees. Some roosts, especially under rock overhangs, may be well lit by day. If a roost is accidentally disturbed, an audible click can be heard which alerts other bats to the presence of an intruder.

Its fur colour is dark to reddish-brown, and its wings are long and narrow. Its ears are triangular-shaped, its muzzle is simple in form and its eyes are relatively large.

Emballonura monticola is a widespread inhabitant of lowland forest in the Malay Peninsula (comprising southern Thailand, southern Myanmar, Peninsular Malaysia and Singapore) and the islands of Sumatra, Java, Borneo and Sulawesi. In Singapore it is now very rare.


Fig 1 : Roosting beneath a large sandstone boulder by day.

Fig 2 : A colony of Lesser Sheath-tailed Bat roost under this rocky outcrop, used as a Buddhist shrine in Panti Forest, Johor, Peninsular Malaysia..

Fig 3 : This roost has more than 20 individuals.

Figs 4 and 5 : Two examples from Johor, Peninsular Malaysia with a roost posture that is typical of the species.

Fig 6 : Example in a boulder roost on Penang Island, Peninsular Malaysia.

Fig 7 : The call of Emballonura monticola is easily identified; it comprises a typical hump-shaped call of around 8 milliseconds, at a frequency of around 50 kHz, with multiple harmonics.


References : M5, M6