5 Questions
How is the absence of the epistomal sulcus in some insects compensated for, such as in cockroaches?
In insects where the epistomal sulcus is absent, such as in cockroaches, the anterior tentorial pits help to identify these areas and they lie just above the mouth.
What are the components of the frontoclypeal region in the insect head?
The frontoclypeal region comprises the frons and clypeus, which are the postoral and preoral parts, respectively, separated by the epistomal sulcus.
What lies immediately behind the mouth and indicates the boundary between the preoral clypeus and postoral frons?
The frontal ganglion lies immediately behind the mouth and indicates the boundary between the preoral clypeus and postoral frons.
How are the muscles of the clypeus and frons separated in the insect head?
The muscles of the clypeus and frons are separated by the frontal ganglion.
What are the modifications at the back of the insect head?
The hypostomal sulci bend upwards posteriorly and are continuous with the postoccipital suture.
Test your knowledge of insect head anatomy with this quiz on structural modifications in the frontoclypeal, posterior, lateral, and ventral regions. Explore the unique features of the frons, clypeus, and epistomal sulcus, and learn how to identify these areas in different insects.
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