Scutate

Definition

Shield-shaped or scale-like; bearing a scutum or scutes. In arthropods, describes hardened, plate-like cuticular structures that are broader than long and often serve protective or structural functions. Contrasts with elongate, filiform, or setose conditions of comparable body regions.

Etymology

From Latin scutum, shield

Example

The scutate forewings (tegmina) of many cockroaches form a protective cover over the membranous hindwings and abdomen; scutate setae in some arachnids appear as flattened, shield-like scales rather than cylindrical hairs.

Synonyms

• scutiform

Related Terms

• Scutum
• scute
• tegmen
• elytron
• peltate
• squamate
• Sclerite

Usage Notes

In entomology, often applied to body shape (scutate abdomen) or to particular sclerites and setae. Not synonymous with 'scutellum'—scutate describes form, not homology. In herpetology and ichthyology, 'scutate' also describes scale arrangements, but arthropod usage remains morphologically parallel. Distinguish from 'escutcheon' in mollusk anatomy.