Epigynial plate see epigynum

epigynum, epigynium n.; pl. -yna [Gr. epi, upon; gyne, woman] (ARTHRO: Chelicerata) 1. A sclerotized structure of certain female spiders and mites, variable in form, covering the genital opening. 2. In mites also referred to as epigy-nial plate or genital plate.

epilabrum n.; pl. -labra [Gr. epi, upon; L. labrum, lip] (ARTHRO) In Myriapoda, a sclerite on each side of the labrum.

epilimnion n. [Gr. epi, upon; limne, lake] The upper layer of water found in deep lakes. see thermocline and hypolimnion.

epilobe n. [Gr. epi, upon; L. lobus, a rounded projection] (ARTHRO: Insecta) A lateral appendage of the mentum of ground beetles.

epilobous a. [Gr. epi, upon; L. lobus, a rounded projection] (ANN: Oligochaeta) A prostomium that is continued by a tongue into the peristomium but without reaching the division between segments 1 and 2.

epimegetic a. [Gr. epi, upon; megas, large] (ARTHRO: Insecta) Being the largest in a series of polymorphic forms.

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