Scorpion; it was hiding under the bark of an old, fallen tree trunk, but as soon as I lifted up the bark the scorpion just dropped out and lay on its back for a while on the ground, until it righted itself and moved. A convenient, hands-free way to get an underside photo of something with a stinger.
En Paco´s Reserva Natural de Flora y Fauna Silvestre
Bark scorpion with young on back. In a metal pile.
Scorpions are predatory arthropod animals of the order Scorpiones within the class Arachnida. They have eight legs and are easily recognised by the pair of grasping claws and the narrow, segmented tail, often carried in a characteristic forward curve over the back, ending with a venomous stinger. Scorpions range in size from 9 mm (Typhlochactas mitchelli) to 20 cm (Hadogenes troglodytes).