Coryne sp. 2

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 : 8

Coryne sp. 2

Fig. 3C

Description: Colony stolonal. Polyps arising from a tubular and creeping hydrorhiza. Two polyps were found, one with hydranth, 1.3 mm high, the other one 2.2 mm high (only the pedicel). Pedicel 112–117 µm wide in the basal portion and 127–132 µm in the distal portion. Perisarc completely wrinkled along the entire pedicel length, projecting partially over the hydranth base. Hydranth elongated, 405 µm high, 154 µm wide. Around 10 capitate tentacles, four on the oral region, the others scattered on the hydranth body. Some completely distended tentacles look like filiform ones. Nematocysts stenotele? undischarged in the coenosarc (14.2–15 × 6.8–7.7 µm).

Material examined: PCS – two polyps from the rainy season, without gonophores.

Station: PCS – 12.

Bottom: sand.

Taxonomic remarks: Coryne sp. 2 resembles Coryne pusilla ( Schuchert 2001, p. 766, fig. 14A-B), however, due to the small amount of material and its bad condition we decided to keep the identification as Coryne sp. 2 .

Remarks: unknown substrate.

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).