Superfamily ARCTUROIDEA Dana, 1849
- Arcturoidea Dana, 1849.
Introduction
Arcturoids differ from idoteids in the fusion of pereonite 1 to the head, gnathopod-like first pereopod and the modified pleopod 1, that of the male interacting with the appendix masculina on pleopod 2 as a spermatophore-transfer device.
Diagnosis
Body more or less cylindrical, without coxal dorsal plates or pleonal epimera (Xenarcturus excepted). Head and pereonite 1 fused. Pereopod 1 smaller than pereopod 2, sometimes gnathopod-like, very different in structure from pereopod 2. Pleopod 1 peduncle more elongate than rami, longer than on other pleopods; exopod of male thickened and with groove on posterior face, or laminar, with proximolateral notch.
History of changes
Note that this list may be incomplete for dates prior to September 2013.
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| CRUSTACEA Brünnich, 1772 | 03-Jan-2025 | ADDED | Dr Gary Poore |