@article {174, title = {Two species with ventral receptacles in Trichocera Meigen (Diptera: Trichoceridae)}, journal = {Acta zoologica cracoviensia}, volume = {63}, year = {2020}, pages = {1-7}, chapter = {1}, abstract = {

The ventral receptacle is a kind of a sperm storage shaped as an elongated pouch and positioned at the ventral side of female genitalia. It is a novelty and an alternative system to the spermathecae present in a vast majority of Diptera, and insects in general. Among the Diptera the ventral receptacle is present in the families of Brachycera Acalyptrata; the subgenus Trichocera (Staryia) is the only taxon among the entire Diptera Nematocera known to date in which the ventral receptacle was found. The subgenus comprises 13 species known from northern and central Europe. In this paper two new species of Staryia are described, one from Switzerland, and the other from Scandinavia. Additionally, a revised description of a female of T. (Metatrichocera) gigantea DAHL, 1967, is provided, based on specimens from the far eastern locality in Siberia.

}, keywords = {new species, seminal receptacle, spermatheca, Staryia, Trichocera gigantea}, issn = {0065-1710}, doi = {10.3409/azc.63.01}, author = {Krzemi{\'n}ska, Ewa} } @article {162, title = {Ventral receptacle in the genus Trichocera: A case of parallel evolution between remote lineages of the Diptera (Diptera: Nematocera: Trichoceridae)}, journal = {Zoologischer Anzeiger}, volume = {263}, year = {2016}, pages = {6{\textendash}15}, abstract = {

The paper deals with female reproductory system in the Diptera and describes the first case of the ventral receptacle among the Nematocera in the family Trichoceridae. The receptacle is a sperm storage organ alternative to the spermathecae, and was till now described in Brachycera: Schizophora. Herewith, the receptacle appears in a small group of species which present the different stages of evolution from the spermathecae to the receptacle within the genus Trichocera Meigen. The group was formerly known as a rectistylus group of species; herein it is raised to the subgenus level. Three new species are described.The ventral receptacle is a unique character within the genus and the family, whose all species have spermathecae and a similar morphology of the female inner and outer genitalia. Other accompanying modified structures in females of the new subgenus include strongly reduced genital plate and genital fork, and changed shape of the genital segment. Two species show possible evolutionary transition states from the plesiomorphic state of three spermathecae to a new sperm storage system: one new species has both the spermathecae and the receptacle, whereas another, Trichocera polanensis Star\ý, has three poorly sclerotized spermathecae.

}, keywords = {Female reproductive tract, new species, New subgenus, seminal receptacle, Spermathecae}, issn = {00445231}, doi = {10.1016/j.jcz.2016.03.014}, author = {Krzemi{\'n}ska, Ewa and Gorzka, Damian} }