Definition of pectunculate in US English:

pectunculate

adjective

Entomology
rare
  • Having a row of minute spines or bristles; finely pectinate.

Origin

Early 19th century; earliest use found in William Kirby (1759–1850), entomologist and naturalist. From classical Latin pect- + classical Latin -unculus + -ate. Compare classical Latin pectunculus.