Anal angle

Definition

The corner or angle of the wing margin located near the anal region of an insect's wing, typically found in butterflies and moths.

Etymology

Derived from Latin 'anus' meaning 'ring' or 'circle' and 'angulus' meaning 'angle' or 'corner'.

Example

The anal angle of the butterfly's hindwing is often a crucial identification point for entomologists.

Related Terms

• Wing margin
• Hindwing
• Insect morphology

Usage Notes

The anal angle is an important feature in the identification and classification of various insect species, particularly butterflies and moths.