Atetrapachylasma, Newman, William A. & Jones, William J., 2011

Newman, William A. & Jones, William J., 2011, Two Northeast Pacific deep-water barnacle populations (Cirripedia: Calanticidae and Pachylasmatidae) from seamounts of the Juan de Fuca Ridge; " insular " endemics stemming from Tethys, or by subsequent dispersal from the Western Pacific center of distribution?, Zootaxa 2789, pp. 49-68 : 60

publication ID

https://doi.org/ 10.5281/zenodo.202501

DOI

https://doi.org/10.5281/zenodo.5667573

persistent identifier

https://treatment.plazi.org/id/7C13F601-FFEB-FF8D-54A0-5BA5FD14FA88

treatment provided by

Plazi

scientific name

Atetrapachylasma
status

gen. nov.

Atetrapachylasma gen. nov.

Diagnosis. Wall of female of four plates ( Figs 11 View FIGURE 11 , 12 View FIGURE 12 ), compound rostrum (RLRRL), paired compound carinolatals (CL1CL2s) and carina (C); compound plates apparently without sutural traces in dwarf males as well as females. Wall low conical, wider than high; overall round plan constricted at sutures giving the four parietal parts a somewhat lobed appearance ( Figs 5 View FIGURE 5 , 11 View FIGURE 11 ). Opercular plates simple, triangular in outline, articular ridges and furrows weakly developed; tergum without depressor muscles crests; scutum with strong occludent ridge visible externally and internally, adductor pit and ridge absent.

Etymology. “A-” not, in preference to “Para-“ beside or near “, since despite also being four-plated and without traces of vestigial sutures, it is otherwise evidently not closely related to the type, Tetrapachylasma trigonum Foster, 1988: 225 , much less to Tetrapachylasma s.l.

Kingdom

Animalia

Phylum

Arthropoda

Class

Maxillopoda

SubClass

Cirripedia

Order

Sessilia

Family

Pachylasmatidae

SubFamily

Pachylasmatinae

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