Grichanov I.Ya.1, Negrobov O.P.2, Selivanova O.V.2 2014. Two new genera of Medeterinae (Diptera: Dolichopodidae) from Baltic amber and some new combinations // Russian Entomol. J. Vol.23. No.1: 61–70 [in English].
1 All-Russian Institute of Plant Protection, Podbelskiy roadway 3, St. Petersburg, Pushkin 196608, Russia. E-mail: email@example.com
2 Department of Ecology and Systematics of Invertebrate Animals, Biological-Soil Sciences Faculty, Voronezh State University, Universitetskaya sq. 1, Voronezh 394006, Russia. E-mail: firstname.lastname@example.org
KEY WORDS: Diptera, Dolichopodidae, Systenites, Palaeosystenus, Palaeoargyra, Baltic amber, new genus, key.
ABSTRACT. Two new genera, Systenites gen.n. and Palaeosystenus gen.n. (Diptera: Dolichopodidae: Medeterinae) are described from Baltic amber. The new genera are similar to the extant genera of the subfamily Medeterinae, tribe Systenini, but differing in wing veins R4+5 and M1+2 straight and subparallel behind dm-cu; acrostichals uniseriate, equal in length; male 7th abdominal segment reduced. The following recombinations are proposed: Systenites argutus (Meunier, 1907) (Porphyrops), comb.n., Systenites inclytus (Meunier, 1907) (Porphyrops), comb.n., Systenites splendidus (Meunier, 1907) (Xiphandrium), comb.n., Palaeosystenus succinorum (Meunier, 1907) (Porphyrops), comb.n., Palaeoargyra mutabilis (Meunier, 1907) (Argyra), comb.n. A key to extinct medeterine genera from Baltic amber is compiled, as well as a key to species of Medeterites Grichanov, 2010, Palaeosystenus and Systenites. Extant genera Argyra Macquart, 1834, Rhaphium Meigen, 1803 and Systenus Loew, 1857 and subfamily Rhaphiinae are excluded from the Baltic amber fauna. Palaeoargyra dytei Evenhuis, 1994 is placed in synonymy to P. mutabilis (Meunier, 1907), syn.n.