The Seira n. sp. was collected in Cacimba de Dentro a small municipality in the State of Paraíba, Northeastern Brazil. This is a semi arid region, and the type locality is a river that dries out in the dry season. The animals were found in both, dry and wet, seasons. The remarkable morphology and the climatic conditions of the locality they occur, suggest an interesting biology for this group. It is necessary to study the species to understand the functions of the morphological modifications they show. Dr. Fjellberg found a species with similar modifications in Fuerteventura, Canary Islands, this material is being studied, and a first superficial examination, indicates that the structures (setae and spines) involved in the modification can be homologues. If this is confirmed, with further studies, this monophiletic group must be described as a new genus, despite the unlikely biogeographic distribution. At the other hand if these structures are not homologs, this will be a striking case of convergence.

Seira species novum: with modified raptorial prolimbs
SEM by Zeppelini, D. (2004),
Zeppelini, D. scan. (2004).