Some specimens have a yellowish blotch near the head or on the anal region.

The glands are found in the anal region, above the base of the tail, and on the paws and cheeks.

The anal region is a smooth, tall, raised pink papilla.

The headshield extends posteriorly to form a long abdominal division which probably reached the anal region.

Males have keeled scales on their sides in the anal region.

Wings of the female slightly yellowish, especially the anal region of the hindwing.

Improper hygiene, which may introduce bacteria or other irritants from the anal region to the vaginal area.