Hamulus

In human anatomy, examples include:[4] In arthropod morphology, hamuli are hooklets, usually in the form of projections of the surface of the exoskeleton.

The best-known examples are probably the row of hamuli on the anterior edge of the metathoracic (rear) wings of Hymenoptera such as the honeybee.

It is less widely realised that similar hamuli, though usually fewer, are used in wing coupling in the Sternorrhyncha, the suborder of aphids and scale insects.

In those springtails (Collembola) that have a functional furcula, the underside of the third abdominal segment bears a hooked structure, variously called the retinaculum or hamula.

[5] The terms also are used in descriptive anatomy of some insect genitalia, such as hamuli in various Odonata and "hamus" for the hooked part of the uncus in male Lepidoptera.