| Abstract |
The discovery of two diminutive and very distinct ibliform barnacles from shallow waters off
northern New Zealand and northeastern Tasmania provides an opportunity to re-evaluate the
Iblidae, the most primitive of the living thoracicans. These are retained within the Superorder
Thoracica, but are distinguished at ordinal level from the remainder of the Pedunculata s.l. The
resultant new order, the Ibliformes nov., comprises barnacles with predominantly chitinous rather
than calcareous capitular plates; two families are recognized, the Iblidae s.s., comprising two
subfamilies, the Iblinae (Ibla s.s.) and the Neoiblinae nov. (Neoibla gen. nov.), and the Idioiblidae
nov. comprising the Idioiblinae nov. (Idioibla gen. nov.) and the Chaetolepadinae nov. (Chaetolepas
Studer, 1889 and Chitinolepas gen. nov.). The monotypic Chitinolepas further highlights the high
endemism and relict nature of the New Zealand marine fauna in particular and the southern
hemisphere in general. On the basis of morphology and, where possible, genetic and larval work, it
is recommended that the remainder of the stalked thoracicans be divided between three new orders,
the †Cyprilepadiformes, Ibliformes, Lepadiformes and Scalpelliformes.
Key words: Cirripedia; Thoracica; †Cyprilepadiformes ord. nov; Ibliformes ord. nov;
Lepadiformes ord. nov.; Scalpelliformes ord. nov.; Iblidae; Idioiblidae fam. nov.; †Illilepas incertae
sedis; Chaetolepas; Chitinolepas gen. nov.; Ibla; Idioibla gen. nov.; Neoibla gen. nov.; apatitecalcite
mineralization; naupliar setation, cyprid lattice organs; molecular clock calibration |
Buckeridge, J.S. and W.A. Newman (2006) A revision of the Iblidae and the stalked barnacles (Crustacea: Cirripedia: Thoracica), including new ordinal, familial and generic taxa, and two new species from New Zealand and Tasmanian waters. Zootaxa 1136: 1–38.