Genital hamulehook see hamular hook hamulus anterioris hamulus posterioris

genitalia n.pl. [L. genitalis, pert. to procreation] 1. The sexual organs and associated structures. 2. (ARTHRO: Chelicerata) In male and female spiders, the sclerotized genital structures. 3. (ARTHRO: Insecta) Usually applied to the external sexual organs; gonapophyses.

genital lobe (ARTHRO: Insecta) In Odonata genitalia, a lobe of the postero-lateral angles of the second abdominal segment.

genital opening 1. (ARTHRO: 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. (MOLL: Bivalvia) Opening for gonadal products leading into the cloacal passage.

genital organs The reproductive organs.

genital papilla/papillae 1. (ANN) A protuberance below the neuropodium where a reproductive duct opens. 2. (ARTHRO: Chelicerata) Endite of an opisthosomatic appendage; shaped like an erectile papilla or verruca in Acari. 3. (ARTHRO: Crustacea) In some males, long genital processes on the 5th or 8th thoracomere that provides openings for the vasa deferentia and a pair of accessory glands. 4. (ARTHRO: Insecta) see papilla genitalis. 5. (NEMATA) Sensory nerve terminations, variable in size, form and arrangement on or near the male tail.

genital plates 1. (ARTHRO: Chelicerata) see epigynum. 2. (ECHINOD: Echinoidea) Plates surrounding the periproct.

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