Hemisquilla ensigera
{{Short description|Species of mantis shrimp}}
{{Speciesbox
| taxon = Hemisquilla ensigera
| authority = (Owen, 1832)
| synonyms = {{specieslist
|Gonodactylus ensiger|Owen, 1832
|Gonodactylus styliferus|H. Milne Edwards, 1837
}}
}}
Hemisquilla ensigera is a species of mantis shrimp. Two formerly recognized subspecies are now considered to be separate species (H. californiensis, H. australiensis).{{cite WoRMS |author=WoRMS |year=2022 |title= Hemisquilla ensigera (Owen, 1832) |id=408962|access-date=3 May 2022}}
Ecology
The species is a near complete "oxyconformer" in that its aerobic metabolism is significantly depressed and impacted at low oxygen levels.{{Cite thesis|last=Cassista |first=Jason |year=1995|title=The Aerobic Metabolism and Behavior of the Burrow-dwelling Mantis Shrimp, HEMISQUILLA ENSIGERA CALIFORNIENSIS |url=https://scholarsrepository.llu.edu/etd/611 |publisher=Loma Linda University|type=MSc thesis}}