pleuron

As nouns the difference between sclerite and pleuron

is that sclerite is (biology) a hardened body part, especially in arthropod exoskeletons while pleuron is a lateral sclerite of a thoracic segment of an arthropod between the tergum and the sternum.

As an adjective lateral

is lateral.

As a noun pleuron is

a lateral sclerite of a thoracic segment of an arthropod between the tergum and the sternum.

As nouns the difference between pleuron and pleurite

is that pleuron is a lateral sclerite of a thoracic segment of an arthropod between the tergum and the sternum while pleurite is a pleuron.