clitellum

(redirected from clitella)
Also found in: Dictionary, Medical.

clitellum

[klə′tel·əm]
(invertebrate zoology)
The thickened, glandular, saddlelike portion of the body wall of some annelid worms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Histological sections through clitella in mature individuals revealed thick, collagenous layers (2-3 mm) separating outer, circular muscle fibers and the epidermis (Fig.
However, previous reports have shown the evidence that in earthworm systematics, reproductive organs including the clitella, male pores, female pores, testes, ovaries, spermathecae, and prostate glands are believed to be less affected by environmental influences through time and are evolutionarily more conservative (Gates, 1972; Blakemore, 2002).
The fine edge of a flamed pair of dissecting scissors was inserted into the ventral surface at the region of the clitella and with the body wall slightly raised up with the scissors; an incision was made longitudinally along the earthworm.