...AND OTHER INVERTEBRATES play a part in this podcast from the noise-beleaguered Radio Valencia studio. We were barely able to play musical and sound effects or provide archival SubGenius material, as the equipment struggles for life. The peculiar hydraulics of spider leg function come in for a mention. Skeletal muscles in the whipscorpion. Mastigoproctus giganteus compare with those of several other chelicerates to clarify the evolutionary morphology and phylogenetic relationships of arachnids. Indeed, we find homologies for the anterior opisthosomal appendages and sclerites in tetrapulmonate arachnids (that is, Trigonotarbida, Araneae, Amblypygi and Uropygi), as well as the controversial discovery that muscular attachments in arthropods can shift from the mesodermal endosternite to the ectodermal exoskeleton, a reconstruction of the evolutionary transformations associated with the apparent uncoupling of pharyngeal and locomotor complexes in the prosoma, or cephalothorax, of Pedipalpi (that is, Amblypygi and Uropygi), and an expanded list of unique synapomorphies supporting the sister-group status of Amblypygi and Uropygi. And so, another show in the can.