Beania Johnston, 1840

Dick, Matthew H., Tilbrook, Kevin J. & Mawatari, Shunsuke F., 2006, Diversity and taxonomy of rocky-intertidal Bryozoa on the Island of Hawaii, USA, Journal of Natural History 40 (38 - 40), pp. 2197-2257 : 2210

Genus Beania Johnston, 1840

Beania discodermiae ( Ortmann, 1890)

( Figure 5C )

Diachoseris discodermiae Ortmann 1890, p 26 , Plate 1, Figure 23.

Beania discodermiae: Gordon 1984, p 45 , Plate 11D, E.

Measurements

OpL, 0.50–0.58 (0.554¡0.030). OpW, 0.28–0.31 (0.294¡0.012). AvL, 0.13–0.18 (0.153¡0.017).

Description

Zooids well separated, each connecting with others by six narrow tubular extensions, the distance between opesiae greater than half the opesial width. Five short, thin spines around distalmost curvature and four slightly longer spines more proximally along each lateral margin; spines erect or angled outward, not obscuring opesia. Pedunculate avicularia single or paired lateral to orifice, with a bulbous chamber and narrow, laterally compressed rostrum; avicularium length greater than twice avicularium width.

Distribution

Japan, Malaysia, New Zealand ( Gordon 1984). This is the first record from the Hawaiian Islands.

Figures

Figure 5. (A, B) Antropora minor (Hincks): (A) autozooids, bleached; (B) autozooids, bleached; zooid at right is a brooding zooid, with a raised, smooth distal margin that may represent a vestigial ovicell. (C) Beania discodermiae (Ortmann): autozooids, unbleached. (D) Micropora rimulata Canu and Bassler: autozooids and ovicellate zooids, bleached. Scale bars: 200 Mm (A, B); 500 Mm (C, D).