Acyptolaria pulchella ( Allman, 1888 ),

Peña Cantero, Alvaro L., Marques, Antonio C. & Migotto, Alvaro E., 2007, Revision of the genus Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae), Journal of Natural History 41 (5 - 8), pp. 229-291: 261-263

publication ID

http://doi.org/ 10.1080/00222930701228132

persistent identifier

http://treatment.plazi.org/id/AC456037-6032-626B-FE10-FD268E0B6B83

treatment provided by

Carolina

scientific name

Acyptolaria pulchella ( Allman, 1888 )
status

 

Acyptolaria pulchella ( Allman, 1888) 

( Figures 13View Figure 13, 16EView Figure 16, 18EView Figure 18; Table XIII) 

Cryptolaria pulchella Allman 1888  , p lvii, lxvii, lxviii, 40–41, Plate 19 Figures 2, 2aView Figure 2.

Material examined

Holotype: BMNH 1888.11.13.28, H.M.S. Challenger, Sta.?, Honolulu, 20–40 fathoms (36–72 m), one stem ca 70 mm high, with coppiniae. 

Description

‘‘Colony attaining a height of nearly three inches [76.2 mm], main stem irregularly branched, branches carrying regular, pinnately disposed, alternate ramuli’’ ( Allman 1888, p 40).

Stem strongly polysiphonic, quite straight basally, giving rise to branches alternately arranged in one plane, sometimes in two planes making an obtuse angle. Distal part of colony with indefinite branching pattern; some areas with alternate branching, others with irregular arrangement. Basal part of stem with branches originating at ca 45 °, but thereafter curving upwards.

Hydrothecae alternate, in one plane. Hydrotheca tubular, almost completely cylindrical; diameter only slightly decreasing at basal part. Hydrotheca gently curved abcaulinarly; four-fifths to three-quarters of adcauline wall adnate to internode. Adcauline wall entirely convex; abcauline wall concave. Hydrothecal aperture circular, directed upwards, forming an angle of 50–70 ° with long axis of branch. Rim even, with few short renovations.

Coppiniae without defensive tubes. Gonothecae fusiform, bottle-shaped, firmly aggregated. Diameter strongly decreasing at distal part forming a short distal neck bearing a circular aperture.

Remarks

‘‘The very regularly pinnate disposition of the ramuli, and the absolutely distichous and regular disposition of the hydrothecae, give to this species an aspect of considerable elegance. It is a strong growing form with rather close-set, stout, and short hydrothecae’’ ( Allman 1888, p 41). Although Allman (1888, p 41) indicated that the ‘‘gonosome [was] not known’’, the type material examined has coppinia and afforded us an opportunity to describe the reproductive structures. Acryptolaria pulchella  is characterized by the relatively short and wide hydrothecae, adnate to the branches by most of its adcauline wall, and by the large nematocysts.

Distribution

Pacific Ocean, Hawaii, Honolulu , 36–72 m ( Allman 1888)  .

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Campanulinidae

Genus

Acyptolaria

Loc

Acyptolaria pulchella ( Allman, 1888 )

Peña Cantero, Alvaro L., Marques, Antonio C. & Migotto, Alvaro E. 2007
2007
Loc

Cryptolaria pulchella

Allman 1888
1888