TABLE 1 in A new genus and species of barnacle (Cirripedia, Verrucomorpha) associated with vents of the Lau Back-Arc Basin: its gross morphology, inferred first juvenile stage and affinities

TABLE 1. — Seta/article ratios for four neolepadines compared to four sessile barnacles also from vents: the ratio (the width of the article of an intermediate segment of cirrus VI as the denominator and the length of longest seta of that article as the numerator), while highest in the bacteria-farming neolepadine (Lau sp. A), is lowest in Neoverruca. That for Imbricaverruca as well as for Neobrachylepas are not only similar to each other but fall in the low end of the range for vent barnacles.
Measurement in mmRatioReferencearticle widthsetal lengths/aLau sp. A0.334.6014.0Southward & Newman 1998Lau sp. B0.100.676.7idemSouth-East Indian Ridge0.181.709.4idemLihir volcano0.301.856.2idemNeobrachylepas0.070.314.4Newman & Yamaguchi 1995Neoverruca0.250.702.8Newman & Hessler 1989Imbricaverruca0.150.684.5This paperEochionelasmus (NFB)0.251.656.6Yamaguchi & Newman 1990