Friday, February 23, 2018

Tamandua mexicana

I saw this Northern Tamandua (Tamandua mexicana) during a night hike at Arenal Oasis. It is a mainly nocturnal, medium-sized anteater with a prehensile tail. It was the first time for me to observe this animal in the wild.

Friday, February 16, 2018

New nocturnal neighbors

Since January I am working (volunteering) for Callidryas Tours and Arenal Oasis as a tour guide. At the Arenal Oasis Eco Lodge I saw numerous animals, especially during the night hikes. Here I want to share some of those with you.

Powdered Glass Frog - Teratohyla pulverata

This cute Powdered Glass Frog (Teratohyla pulverata) messures barely a length of 3 cm (1.2 in) max. Due to their small size and good camouflage, they are hard to find.

Blunthead Tree Snake - Imantodes cenchoa

I found this juvenile Blunthead Tree Snake (Imantodes cenchoa) coiled up on the leaf of a bromelia. These snakes feed mainly on frogs and lizards.


Shiny green Rhinoceros Katydid (Copiphora cultricornis) nymph.

Pygmy Rain Frog - Pristimantis ridens

The Pygmy Rain Frog (Pristimantis ridens) is very common in this area. Growing to 2.5 cm (0.98 in), this is another very small species.

Striated Webfoot Salamander - Bolitoglossa striatula

Quite rare to see: Striated Webfoot Salamander (Bolitoglossa striatula). This species occurs in Honduras, Nicaragua and Costa Rica. 

Bullet Ant - Paraponera clavata

This big ant is 3 cm (1.2 in) long and feared by man. The sting of this species is considered to be the most painful sting of the entire insect kingdom. It's described to be as painful as a gunshot. That's why this ant is called Bullet Ant (Paraponera clavata).

Red-eyed Treefrog - Agalychnis callidryas

The Red-eyed Treefrog (Agalychnis callidryas) should be part of every night hike in Costa Rica...

Eyelash Viper - Bothriechis schlegelii

Beautiful coloration on this juvenile Eyelash Viper (Bothriechis schlegelii). They are ambush predators, so they can remain motionless for hours.

Emerald Glass Frog - Espadarana prosoblepon

And thus the circle closes, I finish this report as I started it: with a member of the amphibian family called Centrolenidae. This one is an Emerald Glass Frog (Espadarana prosoblepon).