The authorship of the genus was considered to be "Grube & Ørsted in Grube" by Salazar-Vallejo & Eibye-Jacobsen ... [details]
Izuka (1912) placed Coelobranchus in Eunicidae, in which also at the time he included Dorvilleidae genera and other ... [details]
The specific epithet speciosa is the feminine form of the Latin adjective speciosus, meaning 'beautiful' or ... [details]
Not stated but named Coelobranchus possibly because the branchiae are hollow with an internal connection to the ... [details]
The species is named in honour of Dr. Kakichi Mitsukuri (b. Edo, Japan, 15 January 1857 - d. 16 September 1901), ... [details]
"“This species was found creeping on the gills of Macrocheira kaempferi De Haan brought up from a depth of ... [details]
Pacific Ocean, Japan, "In a tide- pool near Misaki in Prov. Sagami, August 17th, 1906" (Izuka, 1912: 184) ... [details]
Namerikawa, Sea of Japan, ~36°46'N 137°20'W [details]
Sagami Bay, Japan, commensal on deep-sea Majoidea crab Macrocheira kaempferi [details]
Inanze Bank, off Naha, Okinawa, Ryukyu Islands, Japan, Pacific Ocean (gazetteer estimate 26.3º, 127.6º). [details]