The ninth annular subdivision of the insect abdomen. In mosquito pupae, represented dorsally chiefly by the median caudal lobe; sternum IX may be present but is usually reduced and indistinct.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
