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Emerald Glass Frog

Espadarana prosoblepon

Description:

adult males to 27mm, females to 32mm, adult males have prominent bluish rounded bone spur (humeral hook), clearly visible on his upper arm, a midge is feeding on him in the photos, bones dark green, males are territorial and can get into scuffles which can last 45 minutes with intruders

Habitat:

rainforest, riparian habitats with dense vegetation

Notes:

One of 4 species of glass frog spotted in Yatama reserve. We spotted this species a couple of times. Since it was night, it was tough to get a habitat shot but this was on a rock beside a small stream.

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7 Comments

SukanyaDatta
SukanyaDatta 2 weeks ago

Blue-green pigment in the bones of the garfish (Belone belone) and eelpout (Zoarces viviparus).

dandoucette
dandoucette 2 weeks ago

I know other glass frogs also have green bones but I wasn't aware of any other animals or amphibians.

SukanyaDatta
SukanyaDatta 2 weeks ago

I am reading up more and more on green bones and the other species that have them. Fascinating.

dandoucette
dandoucette 2 weeks ago

I'm glad you researched it Sukanya because I had no idea! Thanks and thanks ornithoptera!

SukanyaDatta
SukanyaDatta 2 weeks ago

It seems that the green bone colouration is caused by an accumulation of a metabolic byproduct called biliverdin, a green bile pigment. (But why bile pigment should land up in the bone still eludes me.) Anyway, learnt something FANTASTIC today. Thank you Natgeo, dandoucette and PN.

ornithoptera80
ornithoptera80 2 weeks ago

Wow, great shot

SukanyaDatta
SukanyaDatta 2 weeks ago

So cute! Green bones!!! How?? So interesting.

dandoucette
Spotted by
dandoucette

Provincia Heredia, Costa Rica

Lat: 10.40, Long: -84.06

Spotted on Mar 5, 2020
Submitted on Mar 21, 2020

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