''Reticulidia halgerda'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea slug Sea slug is a common name for some Marine biology, marine invertebrates with varying levels of resemblance to terrestrial Slug, slugs. Most creatures known as sea slugs are gastropods, i.e. they are Sea snail, sea snails (marine gastropod moll ...

, a dorid

nudibranch Nudibranchs () are a group of soft-bodied marine gastropod molluscs, belonging to the order Nudibranchia, that shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have b ...

, a shell-less marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the family

Phyllidiidae Phyllidiidae is a family (biology), family of sea slugs, dorid nudibranchs, marine (ocean), marine gastropod mollusks in the superfamily Phyllidioidea. This family is within the clade Doridacea (according to the Taxonomy of the Gastropoda (Bouch ...

.Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278

Description

''Reticulidia halgerda'' grows to a maximum length of 7.0 cm. This species is different externally and internally from species in the ''

Phyllidia ''Phyllidia'' is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Phyllidiidae.Bouchet, P.; Gofas, S. (2012)''Phyllidia''.Accessed through: World Register of Marine Species on 2012-06-07. Species Speci ...

'' and '' Phyllidiopsis'' genera, both of which also have yellow coloration and tuberculate ridges. ''Reticulidia halgerda'' does not have spiculose tubercles but instead has reticulate ridges on the notum that are smooth. '' Phyllidia ocellata'', '' Phyllidia tula'', ''

Phyllidia varicosa ''Phyllidia varicosa'' is a species of sea slug, a dorid nudibranch, a shell-less marine (ocean), marine gastropod mollusc in the family Phyllidiidae.Bouchet, P. (2015)''Phyllidia varicosa'' Lamarck, 1801.In: MolluscaBase (2015). Accessed throu ...

'', and '' Phyllidia coelestis'' all have a different

foregut The foregut in humans is the anterior part of the alimentary canal, from the distal esophagus to the first half of the duodenum, at the entrance of the bile duct. Beyond the stomach, the foregut is attached to the abdominal walls by mesentery. ...

as well as tubercles capped with yellow coloration. Furthermore, unlike ''Reticulidia fungia'', ''Reticulidia halgerda'' does not possess a broad bluish white border.

Distribution

This species is found in numerous locations in the central and western Pacific Ocean, including East Australia, Taiwan, the Philippines, Indonesia, the Marshall Islands, and Fiji.

References

{{Taxonbar, from=Q3933744 Phyllidiidae Gastropods described in 1990