Definitions

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Basis

Schematic drawing of a thoracic leg. [Holthuis, 1993]
(Figure only.) [Holthuis, 1993]
Article 2 of thoracic and abdominal appendages. [Holdich and Jones, 1983]
Limb segments adjoining coxa on its distal side and commonly bearing endopod and exopod; in nonpedunculate cirripeds comprises basal calcareous or membranous plate which furnishes anchorage to foreign body or substrate.
(syn. basipod(ite)) [Moore and McCormick, 1969]
Second article (from body) of leg or maxilliped. Sixth segment from distal end of limb.
(syn. basipodite) [Williams, 1984]
Second article of limb.
(pl. bases) [Poore, 2004]
Second podomere or segment, from the proximal end of a typically 7-segmented appendage (Fig. 3C).
(pl. bases) [Perez Farfante and Kensley, 1997]
Second segment (from proximal end) of segmented appendage. [Hobbs and Jass, 1988]
Second segment from the proximal end of a typically 7-segmented appendage.
(pl. bases) [Butler, T. H.]
Second segment of a pereiopod or maxilliped counted from the proximal end, immovably united with the ischium. [Ingle, 1983]
Segment of protopod adjoining coxa and carrying exopod and endopod distally; also basal calcareous or membranous plate furnishing anchorage to substrate in sessile cirripeds.
(pl. bases) [McLaughlin, 1980]
The second segment from the proximal end of a segmented appendage. [Hobbs, Hobbs, and Daniel 1977]
The second segment from the proximal end of a typically 7-segmented appendage.
(pl. bases) [Chace and Hobbs, 1969]
The second segment of a thoracic limb.
See: Pereopod [Wilson, 1989]
(Taxon-specific: Order Cladocera) Second segment of appendage; from distal segment of protopod (coax, basis). Often fused and indistinguishable.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Class Cephalocarida) Protopod. [Stachowitsch, 1992]
(Taxon-specific: Order Cumacea) Elongate second segment of thoracopod (maxillipeds and pereopods) or pleopods. May bear five-segmented endopod and smaller exopod. (See also epipod). [Stachowitsch, 1992]
(Taxon-specific: Order Tanaidacea) Second of seven segments (coxa, basis, ischium, merus, carpus, propodus, dactylus) of thoracopod. Bears endite in maxillae and maxillipeds.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Decapoda) Second segment of appendage (thoracopod); forms distal segment of protopod (coxa, basis) and bears variously developed branches (endopod, exopod). May be fused to following segment (ischium) to form ischiobasis.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Amphipoda) Second of seven segments of thoracopod (coxa, basis, ischium, merus, carpus, propodus, dactylus); represents first movable (free) segment.
(syn. basipodite) [Stachowitsch, 1992]
Nomenclature of isopod cephalon (A). Examples of isopod mouth appendages: Idoteidae (B, C, F, H); Cirolanidae (D, E, G, I). [Wetzer et al. 1997]
(Taxon-specific: Order Isopoda) (Figure only.) [Wetzer et al. 1997]
Schematic representation of an isopod illustrating morphological terms. [Kensley and Schotte, 1989]
(Taxon-specific: Order Isopoda) Article of appendage adjoining coxa proximally, and carrying endopod distally, i.e., article 2 of pereopod. [Kensley and Schotte, 1989]
(Taxon-specific: Order Isopoda) Second segment of pereopod; located between coxa and ischium.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Mysida) Second of two segments (coxa, basis) of proximal part (protopod) of appendage.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Stomatopoda) Third segment of thoracic appendage (thoracopod); located between coxa and merus. Also interpreted as being second segment (between coxa and ischium).
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Subclass Branchiura) In thoracopod, third of three segments (precoxa, coax, basis) of protopod; may also be applied to segment of antennule.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Subclass Cirripedia) Basal element by which unstalked barnacle is attached to substratum. (calcareous = solid, membranous). [Stachowitsch, 1992]
(Taxon-specific: Subclass Copepoda) Second segment of appendage; forms distal segment of protopod (coxa, basis).
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Subclass Copepoda) The distal segment of the protopod of postantennulary appendages, bearing the rami. [Boxshall and Halsey, 2004]
(Taxon-specific: Subclass Copepoda) The distal segment of the protopod; it bears no more than two ventral, setose endites. The rami, exopod and endopod of a limb, originate on the basis (see coxa and praecoxa). [Ferrari and Dahms, in press]
(Taxon-specific: Subclass Mystacocarida) Protopod. [Stachowitsch, 1992]
(Taxon-specific: Class Ostracoda) Distal part of divided protopod (separated from coxa by suture). [Cohen, Peterson, and Maddocks, in press]
(Taxon-specific: Superorder Syncarida) Second of two segments (coxa, basis) of proximal part (protopod) of appendage.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Thermosbaenacea) Second of two segments (coxa, basis) of proximal part (protopod) of appendage. Frequently interpreted as being fused with following segment (ischium) in maxilliped endopod.
(syn. basipodite) [Stachowitsch, 1992]
(Taxon-specific: Order Euphausiacea) Second segment of appendage; forms distal segment of protopod (coxa, basis) and bears variously developed branches (endopod, exopod). Typically specified only when referring to thoracopods.
(syn. basipodite) [Stachowitsch, 1992]