biramous


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biramous

[bī′rā·məs]
(biology)
Having two branches, such as an arthropod appendage.
References in periodicals archive ?
Sex was determined by the presence of biramous pleopods in females and uniramous pleopods in males (Morgan 1980).
The first pedigerous somite is cephalically incorporated and the three succeeding free pedigerous somites each bear a pair of biramous swimming legs.
Four pairs of biramous swimming legs composed of a precoxa, coxa, basis, exopod, and endopod; with plumose setae on all exopods, endopods, coxae, and bases.
Crab sex was determined as follows: females have a gonopore on the coxa of each third pereopod and elongated biramous pleopods, whereas males have a gonopore on the coxa of each fifth pereopod and short uniramous pleopods.
Protopod of first and second thoracopods large, carrying biramous rami, with each ramus transformed into movable chela.