Hebella costata ( Bale, 1884 )

Watson, Jeanette E., 2012, Some hydroids (Hydrozoa: Hydroidolina) from Dampier, Western Australia: annotated list with description of two new species., Memoirs of Museum Victoria 69, pp. 355-363 : 359

Hebella costata ( Bale, 1884)

Figure 3A

Campanularia costata Bale, 1884: 56 .– Stechow and Müller,

1923: 463. Scandia corrugata Millard and Bouillon, 1973: 60 . Hebella muscensis Millard and Bouillon, 1975: 10 .– Boero et al.,

1997: 22. Hebellopsis costata .– Watson, 2000: 6, fig. 3A. Hebella costata .– Watson and Vervoort, 2003: 64.

Material examined. WAM Z31866. Infertile colony on Eudendrium racemosum ; microslide, malinol mounted.

Description. Hydrorhiza creeping on stem and branches of host. Hydrothecal pedicels variable in length, almost smooth and straight to gnarled, widening to base of hydrotheca. Hydrotheca tubular, straight to slightly bent, body with five to seven undulations becoming more pronounced distally, no diaphragm visible. Margin circular, transverse or slightly oblique to hydrothecal axis, rim weakly everted, not replicated.

Figures

Figure 3A–D. A. Hebella costata. Hydrotheca with proximal corrugations. B, C. Diphasia digitalis. B, branched stem. C, stem internode with opposite hydrothecae. D. Halopteris glutinosa. Hydrocladial athecate and thecate internodes. Scale bar, mm: A, 0.5. B, 1.0. C, D, 0.25.