thelycum
A specialized genital modification of the three posterior sternites in female penaeidean shrimps. (Pl. thelyca) [Chace and Hobbs, 1969].
External pocket on ventral side of thorax in panaeid female serving as seminal receptacle [McLaughlin, 1980].
External pocket on ventral side of thorax in penaeid females which functions as seminal receptacle (receptaculum seminalis) [Moore and McCormick, 1969].
External seminal receptacle, variously developed, lying on sternum of thorax and formed by outgrowths from last and next to last thoracic somites [Williams, 1984].
Female copulatory organs situated in the ventral region of the thorax [Mauchline, 1984].
Female genitalia comprising modified posterior two or three sternal plates (Dendrobranchiata) [Poore, 2004].
On the ventral surface of the thorax of a female penaeid shrimp; receives the spermatophore from the male during mating [Bliss, 1982].
Specialized genital structure of the three posterior sternites in female penaeidean shrimps. (Pl. thelyca) [Butler, T.H.].
The female genetalia consisting of modifications of the posterior two, or sometimes three thoracic sternites (XII-XIV) serving for the storage or transfer of the sperm, usually in spermatophores, and often shielding seminal receptacles (Fig. 4A). (Pl. thelca) [Perez Farfante and Kensley, 1997].
(Order Decapoda):
In female reproductive system of certain shrimp-like (natantian) decapods, pouch-like accessory copulatory structure formed by sternites of last and next to last thoracic somites. Serves as seminal receptacle and may be composed of several lobes or plates [Stachowitsch, 1992].
(Order Euphausiacea):
In female reproductive system, pouch-like accessory copulatory structure on underside of thorax; associated with female gonopores and formed by sternite and coxal plates of posterior thoracic somite. Receives spermatophore of male [Stachowitsch, 1992].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • thelycum — n. [Gr. thelykos, feminine] (ARTHROPODA: Crustacea) In some female Decapoda, an external pocket on the ventral side of the thorax, functioning as a seminal receptacle …   Dictionary of invertebrate zoology

  • thelycum — …   Useful english dictionary

  • closed thelycum — One in which the seminal vesicles are present. See: thelycum [Perez Farfante and Kensley, 1997] …   Crustacea glossary

  • open thelycum — One in which the seminal vesicles are absent. See: thelycum [Perez Farfante and Kensley, 1997] …   Crustacea glossary

  • Prawn — For other uses, see Prawn (disambiguation). Dendrobranchiata Temporal range: Famennian–Recent …   Wikipedia

  • petasma — A complex genital structure attached to the mesial margins of the protopodites of the first pair of pleopods in male penaeidean shrimps [Chace and Hobbs, 1969]. Abdominal appendage modified as gonapophysis in males of some eucarids, syncarids,… …   Crustacea glossary

  • seminal receptacles — Sacs for storage of spermatophores or sperm, usually on sternite of thoracic somite 7 (sometimes spermathecae), associated with thelycum in Dendrobranchiata [Poore, 2004]. Unpaired or paired bulbous or tubular sacs associated with the thelycum… …   Crustacea glossary

  • Krill — Euphausiacea A northern krill (Meganyctiphanes norvegica) Scientific classification Kingdom …   Wikipedia

  • insemination — The act of placing or introducing sperm onto or into the thelycum or seminal receptacles of the female [Perez Farfante and Kensley, 1997] …   Crustacea glossary

  • seminal receptacle — Diverticulum of oviduct or external pouch (some pygocephalomorph eocarids, isopod peracarids, and decapods) for storing spermatozoa delivered by male. (Syn. receptaculum seminalis) [Moore and McCormick, 1969]. Diverticulum of oviduct or external… …   Crustacea glossary

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