Tabularia variostriata M.A.Harper
CHR 593683, Troup Picnic area, Kaiwharawhara Stream, Otari-Wilton’s Bush, Wellington, New Zealand.
Isotypes: NIWA 938.
Institution holding the type material
Wellington: Troup Picnic area, Kaiwharawhara Stream, Otari-Wilton’s Bush; Taupo Swamp, Porirua (in core dated to pre-human settlement).
Wairarapa: Cape Palliser, in pools from seepage onto sandstone; Lake Wairarapa, from spume at western shoreline.
Canterbury: Lake Ellesmere; Wainono Lagoon; Kaituna Lagoon; Avon River.
Otago: Orore Point; Tomahawk Lagoon.
EtymologyNamed for the distinctively variable length of the striae.
Stellate colonies, usually attached to substrate. Valves linear or slightly lanceolate, protracted at poles, with parallel-subparallel margins, isopolar-lightly heteropolar, apices cuneate to rounded to somewhat rostrate, apical axis 60-200 µm, transapical axis 5-10 µm. Sternum wide with irregular sides, 1/3-1/4 narrower than valve width, occupying entire valve length. Central area not obviously differentiated from sternum. Striae 11-16 in 10 µm, punctate, extending onto mantle, parallel on valve face, slightly radiate at apices. Single rimoportule at each pole.
NOTE: abridged to satisfy the publisher's copyright requirements.
Images published online with kind permission from the British Museum of Natural History.