The two most species-rich scorpion families in Australia are Buthidae and Scorpionidae. Included in Scorpionidae is the genus Urodacus; they’re our big ones, sometimes up to 10 cm head to tail, with great big fearsome claws (chelicerae). Members of Buthidae, however, are much smaller; typically around 2 cm long; with tiny slender claws.

I’m sure I can guess which you think is the most scary! But you might be wrong. Continue reading →