Paracalyptrophora hawaiiensis Cairns, 2009

Cairns, Stephen D., 2018, Primnoidae (Cnidaria: Octocorallia: Calcaxonia) of the Okeanos Explorer expeditions (CAPSTONE) to the central Pacific, Zootaxa 4532 (1), pp. 1-43 : 35-36

publication ID

https://doi.org/ 10.11646/zootaxa.4532.1.1

publication LSID

lsid:zoobank.org:pub:4E9D0908-0933-48AF-A6ED-F3B8D39E8994

DOI

https://doi.org/10.5281/zenodo.5951542

persistent identifier

https://treatment.plazi.org/id/03B0147F-FFCC-FFE7-76CC-6E7C443BFF45

treatment provided by

Plazi

scientific name

Paracalyptrophora hawaiiensis Cairns, 2009
status

 

Paracalyptrophora hawaiiensis Cairns, 2009 View in CoL

Figs. 1T View FIGURE 1 , 17 View FIGURE 17 A–E

Paracalytrophora hawaiinensis Cairns, 2009: 416 View in CoL –420, figs. 1J, 4–5.

Paracalytrophora hawaiiensis: Cairns, 2016b: 94 View in CoL , figs. 46D, 54–55.

Types and Type Locality. The holotype (USNM 1071425) and paratypes are deposited at the NMNH. Type Locality: 18˚42’35”N, 158˚15’19”W (near Cross Seamount, Hawaii), 367 m.

Material Examined. EX 1703-2-1, 7.19˚S, 173.64˚W (Pao Pao, Tokelau Islands), 464 m, 9 unbranched distal branch fragments from same colony, and SEM stubs 2510-2514, USNM 1453680 About USNM ; EX 1702-2-2, 14.29˚S, 169.5˚W (off American Samoa), 448 m, 10 unbranched branch fragments from same colony, USNM 1453585 About USNM ; FK 17-90, 3˚44.030’S, 170˚43.131’W (off Rawaki Island , Phoenix Islands), 601 m, 17 October 2017, 1 colony, Temple Uni- versity .

Remarks and Comparisons. This species was adequately described and figured by Cairns (2009) and thus will not be redescribed or fully figured herein. As noted by Cairns (2009), P. hawaiiensis is similar to P. echinata Cairns, 2009 , a species also known from the Hawaiian Islands but generally found in deeper water. Although the specimens reported herein are slightly different from the type series (i.e., their polyps are slightly larger and their coenenchymal scales bear low ridges), they are otherwise consistent with P. hawaiiensis , and differ from P. echinata in usually having a pair of prominent adaxial buccal scales (each up to 0.6 mm in diameter), smaller basal spines, a bushy colony (not uniplanar), and in having long distal branches (up to 13 cm). Although the types were described as being uniplanar, it is clear even from the holotype that additional flabellate branches overlapped the primary, and the specimens collected herein show that as the colony grows larger (e.g., USNM 1453680, 60 cm tall and 88 cm in width) it becomes bushy ( Fig. 1T View FIGURE 1 ) and has long distal end branches. That colony was also host to several crinoids and an orange-striped galatheid crab, matching the color of the colony ( Fig. 1T View FIGURE 1 ).

These records partially fill a void between the two previously known occurrences of the species from Hawaii and Lord Howe Rise, indicating that it may be a widespread species in the southwest Pacific.

Distribution. Southeast Hawaiian Islands (Cairns 2009), southern Lord Howe Rise ( Cairns 2016b), Tokelau

Islands, Phoenix Islands, American Samoa, 320– 970 m.

Kingdom

Animalia

Phylum

Cnidaria

Class

Anthozoa

Order

Alcyonacea

Family

Primnoidae

Genus

Paracalyptrophora

Loc

Paracalyptrophora hawaiiensis Cairns, 2009

Cairns, Stephen D. 2018
2018
Loc

hawaiiensis: Cairns, 2016b : 94

Cairns, S. D. 2016: 94
2016
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