Toward the side of the body. Opposite: Medial.

A jaw-like mouthpart used for biting and chewing. See also: Labrum, Labium.

Along the midline. Opposite: Lateral.

Showing no variation in form. Opposite: Dimorphic, Polymorphic.

Producing more than two generations per year.

Aquatic juvenile stage of hemimetabolous insects. See also: Larva, Nymph.

A structural notch on the costa influencing wing flexibility. See also: Costa, Subnode.

Common term for the larval stage. See also: Naiad, Larva.

A triangular region on the dorsal head between the eyes.

The posterior part of the head capsule. See also: Frons, Gena.