Vertebrate fauna of SE Asia
  

 

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Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2021

 
 
     
   
   

 

   
   
 
Glossy Horseshoe Bat
   
   

Fig 1
         

Fig 2
          

Fig 3
     

Fig 4
    

Fig 5


Fig 6

 

 

 

Order : CHIROPTERA
Family : Rhinolophidae
Species : Rhinolophus refulgens

Forearm Length : up to 4.1 cm

The Glossy Horseshoe Bat, roosts in caves, boulder crevices, and man-made structures such as tunnels and drain culverts. The relative abundance of this species in original lowland forest, such as occurs at Krau Wildlife Reserve, Peninsular Malaysia, can be highly variable (Kingston et al, 2006).

This is a small bat with two colour phases - one reddish-brown, the other grey. In all forms the fur is quite glossy, and the underparts are pale.

The noseleaf is elaborate and comprises a typically shaped anterior horseshoe structure, a pointed bifurcated 'connecting process' above the stella, and a high, pointed lancet.

On the island of Tioman, which lies off the east coast of Peninsular Malaysia in the South China Sea, this bat is regularly active by day. It is postulated that the reduced number of diurnal avian predators on the island has allowed the species to take advantage of daytime insect prey (Chua & Aziz, 2018, as Rhinolophus lepidus).

Rhinolophus refulgens is currently treated as a separate species to Rhinolophus lepidus (Blyth's Horseshoe Bat) (Soisook et al, 2016).

Rhinolophus lepidus occurs in the Indian Subcontinent, southern China and Indochina. Rhinolophus refulgens has a complimentary geographical range from southern Thailand, Peninsular Malaysia and Singapore to Sumatra.

These images are all from Singapore, where this bat was formerly referred to Rhinolophus lepidus, but is now referred to Rhinolophus refulgens.
 

Figs 1 and 2 : Patrolling the forest searching for flying insects.

Figs 3 and 4 : Typical roost amongst granite boulders, in a steep, wooded valley.

Figs 5 and 6 : A reddish-brown and a greyish example, both from Singapore.


References : M3

Chua, M. A. & Aziz, S. A. 2018. Into the light: atypical diurnal foraging activity of Blyth痴 horseshoe bat, Rhinolophus lepidus (Chiroptera: Rhinolophidae) on Tioman Island, Malaysia. Mammalia.

Soisook, P., Karapan, S., Srikrachang, M., Dejtaradol, A., Nualcharoen, K., Bumrungsri, S., ... & Bogdanowicz, W. (2016). Hill forest dweller: a new cryptic species of Rhinolophus in the 'pusillus group' (Chiroptera: Rhinolophidae) from Thailand and Lao PDR. Acta Chiropterologica, 18(1), 117-139.