What is the function of Lacinia and Gale in the labium of a cockroach?

Dear student,
Please find below the solution to the asked query

The correct term is galea.

Lacinia is one of the sclerites, a hardened plates that helps the cockroach in tearing food.
Galea is broad cup like structure that helps the cockroach in sampling and sensing characteristics of food.
 
Hope this information will clear your doubts about the Lacinia and Galea.
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