The use of vernacular names (common names) is not reccomended for the following reasons:
The use of scientific names prevents confusion as they are the same throughout the world. Although scientific names may change this reflects the work done in trying to understand the taxonomy of the order, and any names changes are well-defined and published. The Phasmida Species File lists the names of all known species of phasmid.
Vernacular names are given on this website for the following reasons:
Knowledge Base: Naming Phasmids