telson

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telson

(tĕl′sən)
n.
1. The rearmost segment of the body of certain arthropods.
2. An extension of this segment, such as the middle lobe of the tail of a lobster or the stinger of a scorpion.

telson

the terminal appendage of the last abdominal segment of some arthropods, such as the tail fan in many crustaceans or the sting in the scorpion.
References in periodicals archive ?
rocks, molluscan shells, and vestimentiferan tubes), on two occasions we found them attached in great numbers to the telsons of common bythograeid crabs.
To identify each female within the same group, part of the telson was cut with the exception of five females and latter sampled to test gonadosomatic index (GSI) and hepatosomatic index (HSI).
For the females with intact telsons, when the ovary of the first female developed to stage VI, they were weighed and dissected, while keeping them on ice, to determine the gonadosomatic index (GSI = 100 x gonad weight/total body weight) and hepatosomatic index (HSI = 100 x hepatopancreas weight/total body weight).