genital opening
1. (ARTHROPODA: Chelicerata)
a. In Acari, originally a transverse slit or trifid orifice associated with segment eight. b. In many actinotrochid Acari, it is found in the progenital chamber where it is named the eugenital opening.
2. (MOLLUSCA: Bivalvia)
Opening for gonadal products leading into the cloacal passage.

Online Dictionary of Invertebrate Zoology. . 2005.

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