Clypeus used in a sentence

Clypeus in a sentence as a noun

The key bit from the abstract:As long as they could not see themselves in a mirror, ants with a blue dot painted on their clypeus did not try to remove it. Set in front of a mirror, ants with such a blue dot on their clypeus tried to clean themselves, while ants with a brown painted dot — of the same color as that of their cuticle — on their clypeus and ants with a blue dot on their occiput did not clean themselves.