genital groove
1. (ARTHROPODA: Chelicerata)
In some female spiders, a cleft posterior to the epigynum into which the fertilization duct opens and through which the eggs pass.
2. (ECHIURA)
A depression, with or without setae, extending from the nephridopore(s) to the mouth on the ventral surface.

Online Dictionary of Invertebrate Zoology. . 2005.

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