Halecium cymosum Fraser, 1935b

Calder, Dale R. & Choong, Henry H. C., 2018, Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions, Zootaxa 4487 (1), pp. 1-83: 30-31

publication ID

https://doi.org/10.11646/zootaxa.4487.1.1

publication LSID

lsid:zoobank.org:pub:524B23B9-8EAA-4BD6-8937-A1B8F1C057B9

persistent identifier

http://treatment.plazi.org/id/0392282A-FFFB-FFFA-AEC1-59501836FC0A

treatment provided by

Plazi

scientific name

Halecium cymosum Fraser, 1935b
status

 

Halecium cymosum Fraser, 1935b 

Halecium cymosum Fraser, 1935b: 107  , pl. 2, figs. 4a–d.

Syntypes. BCPM 976-00471-001: Japan, Sagami Bay , Eboshi-iwa, “on tidal marks”, 19 April 1931, in poor condition; dry. 

BCPM 976-00471-002: Japan, Sagami Bay , Eboshi-iwa, “on tidal marks”, 19 April 1931, several colony fragments, up to 3 mm high, in fairly good condition, with gonophores; slide. 

Lectotype, by present designation. RBCMAbout RBCM 976-00471-003: Japan, Sagami Bay, Eboshi-iwa, “on tidal marks”, 19 April 1931, one colony fragment (middle colony on the slide BCPMAbout BCPM 976-00471-002), 3 mm high, in fairly good condition, with gonophores; slide.

Paralectotypes. BCPM 976-00471-001: Japan, Sagami Bay , Eboshi-iwa, “on tidal marks”, 19 April 1931, in poor condition; dry. 

BCPM 976-00471-002: Japan, Sagami Bay , Eboshi-iwa, “on tidal marks”, 19 April 1931, several colony fragments, up to 3 mm high, in fairly good condition, with gonophores; slide. 

Type locality. Japan: Sagami Bay , Eboshi-iwa (as “ Yeboshi-iwa ”), at low tide ( Fraser 1935b). 

Current status. Valid.

Remarks. Fraser (1935b) received specimens of Halecium cymosum  , collected at Eboshiiwa in Sagami Bay by Emperor Hirohito, from Dr. Hirotaro Hattori. No name-bearing type was designated by him. Hydroids in the Fraser Hydroid Collection at the RBCMAbout RBCM ( BCPMAbout BCPM 976-00471-001; BCPMAbout BCPM 976-00471-002), listed above, are syntypes. The first of these, now dry, is in poor condition. However, specimens on the slide, having the same collection data, are in reasonably good condition. As a lectotype of the species, we designate the large colony fragment ( RBCMAbout RBCM 976- 00471-003), located in the middle of the slide ( BCPMAbout BCPM 976-00471-002). Gonophores are present on this specimen. All others on the slide, along with the dry collection ( BCPMAbout BCPM 976-00471-001), are paralectotypes.

Several records of H. cymosum  were also documented by Hirohito (1995) in his collection. Data accompanying one sample (No. 1242, Sagami Bay , Eboshiiwa , 19 April 1931) correspond with those at the RBCMAbout RBCM  . The specimens are now at the NMNSAbout NMNS in Japan (NSMT-HyR 1242). We do not know whether Fraser examined the material in the process of describing the species, and excluded it from the syntype series. 

While colonies described by Fraser (1935b) reached a maximum  height of 3 mm, others examined by Hirohito (1995) attained 10 mm high or more. Hirohito provided illustrations of the trophosome of H. cymosum  , and of the male and female gonophores, complementing those of Fraser. The species is taken to be valid ( Hirohito 1995; WoRMS).

RBCM

Royal British Columbia Museum

BCPM

British Columbia Provincial Museum

NMNS

National Museum of Natural Science

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Haleciidae

Genus

Halecium

Loc

Halecium cymosum Fraser, 1935b

Calder, Dale R. & Choong, Henry H. C. 2018

2018
Loc

Halecium cymosum

Fraser, 1935b : 107