''Cyanea citrea'' is a species of

true jellyfish The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or "true jellies"). The class name Scyphozoa comes from the Greek word ''skyphos'' (), denoting a kind of drinking cup and alluding to the ...

in the family

Cyaneidae The Cyaneidae are a family of true jellyfish. About 20 species are in this family, including the well-known lion's-mane jellyfish. Species The following species are recognized within the family Cyaneidae. Formerly, this family also included th ...

.Collins, A.G.; Morandini, A.C. (2023). World List of Scyphozoa. ''Cyanea citrea'' Kishinouye, 1910. Accessed throug
WoRMS
on 2023-05-31. It has been found in waters off the coasts of

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

and

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

.Kishinouye, K. 1910. Some Medusae of Japanese waters. ''Journal of the College of Science'', Imperial University of Tokyo 27: 1-35, pls. 1-5. Accessed vi
Biodiversity Heritage Library
2023-05-31. The generic name, ''Cyanea'', is derived from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

, meaning "deep or dark blue in color". The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

, ''citrea'', is derived from the Latin , meaning "citrus", likely in reference to the species' orange color.

Description

The bell of ''Cyanea citrea'' is flat and disc-shaped, and thickens in its center. The bell is about in diameter, and is a deep orange color. The margin of the bell is made up of 32 rounded lobes. Its oral arms are narrow at their tips, but thicken towards the middle before narrowing out once again as they approach the body. The oral arms are a light orange-brown color. The species' tentacles are grouped in eight U-shaped tracts, and are a reddish color at parts distanced from the body. Male genital glands are a light orange-yellow color, while those of females are a dark yellow-brown.

References

Animals described in 1910 Taxa named by Kamakichi Kishinouye Cyaneidae {{Medusozoa-stub