Oswaldella erratum Pena Cantero & Vervoort 1997

• Main Authors: Peña Cantero, Álvaro L., Marzal, Marina Fresneda
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Kirchenpaueriidae; Oswaldella; Oswaldella erratum; Antarc*; Antarctic; Antarctica; East Antarctica
• Online Access: https://doi.org/10.5281/zenodo.5978855; http://treatment.plazi.org/id/03AC2855FF87FFB8E7FE7DB768A92BCB

Oswaldella erratum Peña Cantero & Vervoort, 1997 (Fig. 3I) Oswaldella erratum — González Molinero & Peña Cantero, 2015: 435 (synonymy). Material examined. 38EV73 , four stem fragments up to 80 mm high, with gonothecae (IK–2009–0498). Description. Monosiphonic, unbranched stems, up to 80 mm high, not divided into internodes. Angle between cauline apophyses and stem c. 70°. Cauline apophyses with two aXillary nematophores. First hydrocladial internode bifurcated with two similar prongs. Hydrotheca elongate (Fig. 3I), not completely adnate, placed on middle of internode. Adcauline wall strongly curving at distal part. Hydrothecal aperture kidney-shaped, adcaudally directed. Mesial-inferior nematophore provided with a nematotheca. Ecology and distribution. Present material collected at depths between 689 and 720 m, with gonothecae in December. Oswaldella erratum was considered to have a West Antarctic distribution (Peña Cantero & Vervoort 2004b; González Molinero & Peña Cantero 2015), however, our material, from East Antarctica, indicates a circum- Antarctic distribution. Published as part of Peña Cantero, Álvaro L. & Marzal, Marina Fresneda, 2018, Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica), pp. 121-136 in Zootaxa 4441 (1) on page 133, DOI:10.11646/zootaxa.4441.1.7, http://zenodo.org/record/1301927