Status:
Native
ID Difficulty
Identification
Astacilla species are distinctive marine isopods that are mostly sublittoral but can occasionally turn up in the intertidal zone. They have long antennae with extended 4th and 5th segments, an elongated middle pereon segment, short walking legs on pereon segments 5 to 7, and usually with adapted, setose legs on pereon segments 1 to 4 that are directed towards the mouth for feeding. The pereon segments are typically ornamented with tubercles and/or spines.
A. damnoniensis grows up to 10mm in length. It has three tubercles on its head, it has a medial tubercle on each pereon segment (especially prominent on segment 4), and the lateral borders of the pleotelson are serrated.
