Today's #FrogOfTheDay is a stunner, appropriately named: #39 Guibemantis (Pandanusicola) pulcher (Boulenger, 1882)! Pulcher is Latin for 'beautiful'. It's our first Guibemantis, an enchanting genus of #frogs.
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Boulenger placed this species in the genus Rhacophorus, as with so many other arboreal mantellid frogs, because of their similarity to Asian species. Note particularly the statement 'skeleton bright green'! ( @EvaCHerbst)
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The genus Guibemantis is a group arboreal treefrogs; Mantellidae, not being content to explore all the niches, decided to visit some of them repeatedly! Boophis and Guibemantis became arboreal independently.
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Guibemantis is divided into two subgenera: Guibemantis, large, brown treefrogs that are very hard to distinguish from Boophis; and Pandanusicola, small, mostly greenish treefrogs that particularly inhabit Pandanus screwpalms—the Old World answer to bromeliads.
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The two subgenera differ not only in microhabitat, but also reproductive mode: almost all Pandanusicola breed in the axils of Pandanus plants, whereas subgenus Guibemantis breed in open waters. We'll meet the first species of subgenus Guibemantis tomorrow.
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Living in Pandanus is such a great strategy that a whole community has specialised to live in and on these plants; there are Pandanus-dwelling crabs, scorpions, several groups of frogs… and sometimes when you look in Pandanus, you even get unexpected surprises
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The subgenus Pandanusicola has profited greatly from the research programme of Rick Lehtinen, who has worked on taxonomy, behaviour, and ecology of Pandanus-dwelling frogs. We'll talk about some of that later in the year. Let's get back to Guibemantis pulcher!
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Guibemantis pulcher is found across the rainforests of eastern Madagascar. The population in Marojejy is the northernmost known population, but is probably an undescribed species—note that it lacks the purplish flank blotches that typify G. pulcher.
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These frogs are secretive, and we don't know much about them. The call of Guibemantis pulcher was described in 2011 from a captive population in Germany.
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.472.3801&rep=rep1&type=pdf
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The tadpoles of Pandanusicola are *super* elongated, specialised to life in the axils of Pandanus. This is the only image I could find, from the first edition of the Glaw & Vences Field Guide to the Amphibians and Reptiles of Madagascar
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