Ascarosepion mestus

Ascarosepion mestus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Sepiida
Family: Sepiidae
Genus: Ascarosepion
Species:
A. mestus
Binomial name
Ascarosepion mestus
(Gray, 1849)
Synonyms
  • Sepia mestus Gray 1849
  • Ascarosepion verreauxi Rochebrune, 1884
  • Solitosepia liliana Iredale, 1926

Ascarosepion mestus, also known as the reaper cuttlefish or red cuttlefish, is a species of cuttlefish native to the southwestern Pacific Ocean, specifically Escape Reef off Queensland (15°47′S 145°47′E / 15.783°S 145.783°E / -15.783; 145.783) to Murrays Beach off Jervis Bay (35°08′S 150°46′E / 35.133°S 150.767°E / -35.133; 150.767). Reports of this species from China and Vietnam are now known to be misidentifications. A. mestus lives at a depth of between 0 and 22 m.

Ascarosepion mestus exhibits sexual dimorphism. Females grow to a mantle length (ML) of 124 millimetres (4.9 in), while males do not exceed 77 mm (3.0 in) ML.

The type specimen was collected off the Australian coast and is deposited at The Natural History Museum in London.

Ascarosepion was revived as a genus in 2023; as the genus was named using a specimen of this species, Sepia mestus is thus the type species of Ascarosepion.