Oswaldella laertesi Peña, 2007, sp. nov. ...

• Main Author: Peña, Alvaro L.
• Format: Text
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Kirchenpaueriidae; Oswaldella; Oswaldella laertesi; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.3502624; https://zenodo.org/doi/10.5281/zenodo.3502624

Oswaldella laertesi, sp. nov. (Figures 1–2, Table 1) Material examined. Stn 97 ID 2655, one stem fragment, c. 14 mm long (Paratype, NIWA 29736); Stn 178 ID 7960, one stem, c. 100 mm high, with gonothecae (Holotype, NIWA 29735). Description. Stem c. 100 mm high, unbranched and polysiphonic in first 20 mm. Hydrocaulus provided with apophyses regularly disposed in three longitudinal rows, usually in a spiral arrangement, not in verticils. Cauline apophyses directed upwards, forming an angle of c. 45º with long axis of stem. Stem irregularly divided into internodes, usually with three apophyses. Cauline apophyses with six nematophores: two nematophores each emerging through a “mamelon” situated laterally on upper part of apophysis, and four axillary nematophores, each emerging through a simple perisarc hole. Cauline apophyses supporting hydrocladia, with distinct node between the two. First hydrocladial internode bifurcated, giving rise to two secondary hydrocladia. These forming up to two third-order ... : Published as part of Peña, Alvaro L., 2007, Breaking molds: Oswaldella laertesi, sp. nov., a unique Antarctic species of Oswaldella Stechow, 1919 (Cnidaria: Hydrozoa: Kirchenpaueriidae), pp. 63-68 in Zootaxa 1612 on pages 64-67, DOI: 10.5281/zenodo.178970 ...