Most anterior paired appendage of the head with deutocerebral (second brain neuromere) innervation. Generally composed of jointed articles (annuli) and having sensory function.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith