acicula

{{short description|Anatomical feature of annelids}}

{{about|a bristle-worm anatomical feature|the snail of Aciculidae family|Acicula (gastropod)}}

Acicula ({{singular}}: aciculum) are strong, stout internal chaetae that provide support to parapodia in polychaete annelids.{{cite book |last1=Hutchings |first1=P. A. |last2=Fauchald |first2=K. |title=Polychaetes and Allies: the Southern Synthesis - Class Polychaeata: Definition and General Description |date=2000 |publisher=CSIRO Publishing |location=Melbourne |pages=1–3}}

File:Arctonoe sp. parapodium with chaetae labels.png sp. showing the internal acicula that support the two lobes of the parapodium.]]{{clear}}