Requested reference
Purcell, W. F. (1910). The phylogeny of the tracheae in Araneae. Quarterly Journal of Microscopical Science 54: 519-564. -- Show included taxa
Purcell, W. F. (1910). The phylogeny of the tracheae in Araneae. Quarterly Journal of Microscopical Science 54: 519-564. -- Show included taxa