GENERIC LIMITS AND TAXONOMIC FEATURES OF SOME GENERA BELONGING TO THETRIBE OF CHRYSOGASTERINI (DIPTERA, SYRPHIDAE) .2. TAXONOMIC, NOMENCLATURAL STATUS OF STUDIED SPECIES AND ANALYSIS OF THE COMPLEX MELANOGASTER MACQUARTI (LOEW)

Following the recent systematic review of the generic limits of the ge nera Lejogaster Rondani, Chrysogaster Meigen and Orthonevra Macquart, the revalidation of Melanogaster Rondani and the creation of a new gen us Riponnensia (Maibach et al., 1994), we present and justify in this paper all the nomenclatural changes resulting from this review. In add ition, we clarify the taxonomic status of cryptic species belonging to the complex Melanogaster macquarti (Loew), with, as result, the reval idation and/or the redescription of Melanogaster aerosa (Loew) and Mel anogaster parumplicata (Loew). Type material is designated for the fol lowing species (mentionned here under their original name and not thei r present status) : Chrysogaster aerosa Loew [Lectotype], C. discicorn is Megerle in Meigen [Lectotype], C. elegans Wiedemann in Meigen [Holo type], C. fumipennis Loew [Lectotype], C. grandicornis Meigen [Holotyp e], C. hirtella Loew [Lectotype], C. incisa Loew [Holotype], C. insign is Loew [Holotype], C. longicornis Loew [Lectotype], C. macquarti Loew [Lectotype], C. nuda Macquart [Lectotype], C. parumplicata Loew [Lect otype], C. splendens Meigen [Lectotype], C. violacea Meigen [Lecotype] , C. tarsata Megerle in Meigen [Neotype], C. virescens Loew [Lectotype ], Crysogaster (Lejogaster) virgo Rondani [Lectotype], Melanogaster nu bilis Rondani [Lectotype]. Besides, three synonyms are established or confirmed: Chrysogaster parumplicata (Loew) is a senior synonym of Mel anogaster macquarti Loew, Chrysogaster tarsata is a senior synonym of L. splendida Megerle in Meigen as well as of Crysogaster (Lejogaster) virgo Rondani. Finally, the name lucida Scopoli is shown to have been wrongly applied as a replacement name for viduata auct. nec L.