Symplectoscyphus

Galea, Horia R. & Schories, Dirk, 2012, Some hydrozoans (Cnidaria) from Central Chile and the Strait of Magellan, Zootaxa 3296, pp. 19-67 : 55-56

Symplectoscyphus sp. 1

(fig. 7G–I)

Material examined. Stn. GNZ — 25.v.2007, S08 (10 m): several small, infertile stems, on calcareous bryozoan.

Description. Stems up to 5 mm high, monosiphonic, arising from creeping hydrorhiza; basal part just above origin from stolon with 2 or 3 wrinkles; perisarc rather thick. Stem divided into 445–610 µm long, 135–205 µm wide internodes by oblique, generally well-marked nodes; up to 13 internodes per stem; internodes collinear to slightly zigzagging; short, widening rapidly from base towards distal end, where they bear a hydrotheca; wall of internode prolonged into abcauline wall of hydrotheca, with no inflexion point between them. Hydrothecae tubular, 220–250 µm wide in middle, facing outwards and upwards; adnate for about half their length; free adcauline wall 210–275 µm long, straight to slightly convex, distal end tilted upwards; adnate part 225–250 µm; abcauline side 300–330 µm long, straight; aperture with three pointed cusps separated by deep embayments, 200–230 µm wide at rim. Two stems show the beginning of branching, with one and two, respectively, hydrothecate internodes with similar morphology to that of the stem; basalmost internode of a side branch with two wrinkles of perisarc; branches given off in front of colony, from below a stem hydrotheca. Gonothecae absent.

Remarks. This species is unidentifiable in the absence of gonothecae. Distribution in Chile. Found near Corral.