Species of Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae) collected in the Western Pacific by various French expeditions, with the description of nineteen new species Author Peña Cantero, Álvaro L. Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universidad de Valencia / Fundación General, Universidad de Valencia, Apdo. Correos 22085, E- 46071 Valencia (Spain) alvaro. l. pena @ uv. es pena@uv.es Author Vervoort, Willem National Museum of Natural History, P. O. Box 9517, NL- 2300 RA Leiden (The Netherlands) vervoort @ naturalis. nnm. nl text Zoosystema 2010 2010-06-30 32 2 267 332 http://www.bioone.org/doi/abs/10.5252/z2010n2a5 journal article 8099 10.5252/z2010n2a5 f76e17a3-3bc3-43a8-ae33-6655aba3fa57 1638-9387 4521008 Acryptolaria pulchella (Allman, 1888) ( Figs 26 ; 30 ; 32I ; Table 27 ) Cryptolaria pulchella Allman, 1888 : lvii, lxvii, lxviii, 40, 41, plate 19 figs 2, 2a. Acryptolaria pulchella – Peña Cantero et al. 2007: 261-263 , figs 13, 16E , 18E, tab. XIII. MATERIAL EXAMINED . — Philippines . MUSORSTOM 3, stn DR 117, 12°31.2’- 12°31.3’N , 120°39.3’- 120°39.5’E , 92-97 m , 3.VI.1985 , 2 stems up to 40 mm high, in addition 1 incipient stem c. 5 mm high on sponge, and two fragments up to 8 mm long (RMNH-Coel. no. 31528).— Stn CP 131, 11°36.6’S , 121°43.10’E , 111-113 m , 5.VI.1985 , 6 stems up to 60 mm high (MNHN-Hy.2009-0212); 1 fragment c. 15 mm long with coppinia on slide (RMNH-Coel no. 35422, slide 1664); 2 slides (MNHN-Hy.2009-0157; MNCN 2.03 /401) . TABLE 27. — Measurements of Acryptolaria pulchella (Allman, 1888) from several stations (in μm). Nematocysts from MUSORSTOM 3 stn DR 117.

Range	Mean ± SD (n)
Hydrothecae
Length of abcauline wall	800-950	898.6 ± 47.1 (7)
Length of adcauline wall	1050-1270	1179.3 ± 76.3 (7)
Length of free adcauline wall	360-430	399.3 ± 24.2 (7)
Length of adnate adcauline wall	650-850	765.7 ± 67.8 (7)
Ratio adnate/free adcauline wall	1.6-2.4	1.9 ± 0.2 (7)
Diameter at aperture	225-280	257.9 ± 17.3 (7)
Gonothecae
Maximum diameter	c. 200
Length of funnel	c. 60
Diameter at aperture	80-90
Nematocysts
Larger group	20-23 × 5.5-7	21.2 ± 1.1 × 6.2 ± 0.5 (6)
Ratio	3.0-3.7	3.4 ± 0.2 (6)
Smaller group	6.5 × 2.5-3

ECOLOGY AND DISTRIBUTION. — Acryptolaria pulchella was known only from Honolulu, Hawaii, in the Pacific Ocean, where it was found at depths between 36 and 72 m (Allman 1888). Our material was collected at depths from 92 to 113 m on sponges, in the Philippines . DESCRIPTION Stems strongly polysiphonic and up to 60 mm high. Branching irregular, but sometimes alternate and in one plane ( Fig. 32I ), branches straight ( Fig. 26A ). Hydrothecae alternate, approximately in one plane ( Fig. 26A ), tubular, cylindrical from aperture to roughly the middle of their length; diameter decreasing in basal half ( Fig. 26 A-C). Hydrotheca smoothly curved outwards; adcauline wall adnate for about two-thirds of its length (adnate/free ratio c. 1.9), convex throughout, though occasionally basally straight; abcauline wall concave. Hydrothecal aperture circular, directed upwards, forming an angle of c. 30° with long axis of branch. Rim even, slightly everted, with a few short renovations. FIG. 26.— Acryptolaria pulchella (Allman,1888) : A , branch fragment showing hydrothecal arrangement; B , C , hydrothecae; D , part of coppinia (dorsal view); E , part of coppinia showing distal part of gonothecae; A , B , D , E , from MUSORSTOM 3 stn CP 131; C , from MUSORSTOM 3 stn DR 117. Scale bar: A, 600 μm; B-E, 250 μm. Large nematocysts relatively large and fusiform ( Fig. 30 ). TABLE 28. — Measurements of Acryptolaria pygmaea n. sp. from the holotype (in μm).

Range	Mean ± SD (n = 10)
Hydrothecae
Length of abcauline wall	400-520
Length of adcauline wall	505-680
Length of free adcauline wall	80-300
Length of adnate adcauline wall	380-425
Ratio adnate/free adcauline wall	1.3-5.3
Diameter at aperture	85-100
Nematocysts
Larger group	27-30.5 × 10-11	28.1 ± 1.0 × 10.6 ± 0.5
Ratio	2.5-2.8	2.7 ± 0.1

REMARKS Although Allman (1888) indicated that the gonosome was not known, the holotype examined by Peña Cantero et al. (2007) had coppiniae which were subsequently described by these authors. The coppinia present in our material is in complete agreement with that description. Peña Cantero et al. (2007) characterized this species by the relatively short and wide hydrothecae, adnate to the branches by most of the adcauline hydrothecal wall, and by the large nematocysts. Our material is in complete agreement, apart from having hydrothecae with a relatively longer free part.