Schizotricha jaederholmi Peña Cantero and Vervoort, 1996

Peña Cantero, A. L. & Vervoort, W., 2005, Species of Schizotricha Allman, 1883 (Cnidaria: Hydrozoa: Halopterididae) from US Antarctic expeditions with the description of two new species, Journal of Natural History 39 (11), pp. 795-818 : 805-807

Schizotricha jaederholmi Peña Cantero and Vervoort, 1996

Schizotricha jaederholmi: Peña Cantero and Vervoort 1999, p 365 (synonymy).

Material examined. 575/033, several stems up to 220 mm high ( USNM 1025577; RMNH- Coel. 30950; MNCN 2.03/321).

Diagnosis. Colonies with unbranched stems. Main cauline tube with single hydrothecate internodes with three or four infrathecal nematothecae; cauline apophyses with two nematothecae. Hydrocladia up to fifth order. Hydrocladia regularly divided into hydrothecate internodes. Unforked hydrocladial internodes with two nematothecae below hydrotheca at different levels. Hydrotheca deep. Forked hydrocladial internodes with two or three infrathecal nematothecae; hydrocladial apophyses with two nematothecae.

Remarks. This constitutes the second record of the species. From the previous description, the present material differs in the presence of up to seven infrathecal nematothecae in the cauline internodes and in the occasional presence of a single infrathecal nematotheca in the most distal hydrocladial internodes.

Ecology and distribution. Schizotricha jaederholmi is endemic to the South Georgia area, where it was previously reported from depths of 252 to 310 m ( Peña Cantero and Vervoort 1996) ; the present material was collected at 261–267 m.