seminal receptacle


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seminal receptacle

[′sem·ən·əl ri′sep·tə·kəl]
(zoology)
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Internal genitalia with long, convoluted ducts, a pair of paramedian spermathecae with apical fertilization ducts and a pair of seminal receptacles (Figs.
Internal genitalia with lateral, convoluted copulatory ducts; paramedian spermathecae with apical fertilization ducts and a pair of median, long and apically spherical seminal receptacles (Figs.
Ovary immediately anterior to testes; uterus entirely preovarian; seminal receptacle posterior to ovary .
2); the seminal receptacles are spherical with a small distal hump and bits of cuticle adhered to the surface (Fig.
Seminal receptacles spherical, with a small anterior mound and dark bits of cuticle adhered to their surface, similar to the "porose area" described for other lycosoid families by Griswold (1993), the diameter less than half of duct length.
They are morphologically different from Clade A by the absence of pleurobranchiae on pereiopods 4 and 5, the lack of epipod on third maxilliped, presence of rostral teeth only on dorsal side, symmetrical and semiclosed petasma with hornlike or spoutlike distolateral projections, closed thelycum with one lateral plate, and the seminal receptacles paired and invaginated.
However, members of clade C are morphologically similar to those in clade B in several sexual characters: symmetrical and semiclosed petasma with invaginated and paired seminal receptacles, closed thelycum with one plate and simple spermatophore without accessories (except for Metapenaeopsis which shows asymmetric petasma and uninvaginated and unpaired seminal receptacles).