Teuthowenia

{{Short description|Genus of squids}}

{{Automatic taxobox

| image = Teuthowenia megalops (high resolution).jpg

| image_caption = Teuthowenia megalops

| taxon= Teuthowenia

| authority = Chun, 1910{{cite web | url = http://www.marinespecies.org/aphia.php?p=taxdetails&id=137854 | title = Teuthowenia Chun, 1910 | accessdate = 1 March 2018 | publisher = Flanders Marine Institute | author = Julian Finn | year = 2016 | work = World Register of Marine Species}}

| type_species = Cranchia (Owenia) megalops

| type_species_authority = Prosch, 1849

| subdivision_ranks = Species

| subdivision =

See text.

}}

Teuthowenia is a genus of glass squid in the subfamily Taoniinae. Members of this genus are characterized by their deep-sea habitat, clear bodies, and ability to engorge themselves with water to become larger when threatened. Each known species has a visible digestive gland, which serves a similar purpose as a stomach and liver.

The genus contains bioluminescent species.{{cite journal |last1=Herring |first1=Peter J. |title=Systematic distribution of bioluminescence in living organisms |journal=Journal of Bioluminescence and Chemiluminescence |date=1987 |issue=3|volume=1 |pages=147–163|doi=10.1002/bio.1170010303 |pmid=3503524 }}

It includes three species:{{cite journal|author=Nancy A. Voss|year=1985|title=Systematics, biology and biogeography of the cranchiid cephalopod genus Teuthowenia (Oegopsida)|journal=Bulletin of Marine Science|volume=36|issue=1|pages=1–85|url=http://www.ingentaconnect.com/content/umrsmas/bullmar/1985/00000036/00000001/art00001}}

• Teuthowenia maculata (Leach, 1817) - found in the tropical waters of the eastern Atlantic Ocean.
• Teuthowenia megalops (Prosch, 1849) - found in the subarctic, temperate, and (rarely) subtropical waters of the northern Atlantic Ocean.
• Teuthowenia pellucida (Chun, 1910) - found throughout the oceans of the southern hemisphere.