chitonostracum
n. [Gr. chiton, tunic; ostrakon, shell]
(ARTHROPODA: Chelicerata)
In Acari, the thickest layer of the cuticle between epiostracum and hypodermis; see ectostracum.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • ectostracum — n. [Gr. ektos, outside; ostrakon, shell] (ARTHROPODA: Chelicerata) 1. In acarology, the outermost layer of the chitonostracum layer that when sclerotized is normally colored; stains with acid dyes; see chitonostracum. 2. The middle layer of… …   Dictionary of invertebrate zoology

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