Coryne sp. 1

Castro Mendonça, Luana M., Parisotto Guimarães, Carmen R. & Haddad, Maria A., 2022, Taxonomy and diversity of hydroids (Cnidaria: Hydrozoa) of Sergipe, Northeast Brazil, Zoologia (e 21032) 39, pp. 1-65 : 6

Coryne sp. 1 Fig. 3B

Description: Colony stolonal, polyps up to 1.14 mm high, arising from a simple and creeping hydrorhiza. Perisarc smooth with some annulations in the basal portion, close to the hydrorhiza. Peduncle 0.32–0.76 mm high, width increasing from the basal to the distal portion (between 49–68 µm in basal portion and 83–143 µm in the distal one). Hydranth cylindrical, 0.3–0.41 mm high and 0.1–0.15 mm wide, with scattered capitate tentacles.

Material examined: VB – one infertile colony with three polyps from the dry season.

Station: VB – C1P56.

Taxonomic remarks: Two species of Coryne are recorded from the Brazilian coast, Coryne eximia Allman, 1859 , and C. pusilla Gaertner, 1774 . Colonies of C. pusilla are erect and branched, stem completely annulated or interrupted by smooth portions. Hydranth long, 1.5–2.5 mm high. The characteristics of C. pusilla differ from the specimens found in the Vaza-Barris River, which are similar to C. eximia as described in the review of the Corynidae family by Schuchert (2001). However, as only a few individuals without gonophores were found in Sergipe and they are not in a good condition for identification; we decided to keep the identification as Coryne sp. 1 .

Remarks: The colony was found on Ostreidae .

Figures

Figure 3. (A) Cladocoryne floccosa, detail of a polyp showing a hydranth with gonophore (red arrow); (B) Coryne sp. 1 general view of a polyp; (C) Coryne sp. 2 general view of a polyp; (D-F) Zanclea migottoi: (D) general view of two polyps, one of them with gonophores (red arrow); (E) detail of the medial portion of the hydranth showing a group of nematocysts at the tentacle base (circle) and a discharged nematocyst (red arrow); (F) detail of the hydranth with two undischarged nematocysts (red arrows).