Grichanov I.Ya. 2023. A new species of Rhaphium Meigen, 1803 and new records of Dolichopodidae (Diptera) from Oka Nature Reserve, Russia // Invertebrate Zoology. Vol.20. No.4: 467–473 [in English].

All-Russian Institute of Plant Protection, Podbelskiy roadway, 3, St. Petersburg, Pushkin 196608 Russia. E-mail:

doi: 10.15298/invertzool.20.4.12

ABSTRACT: A new long-legged fly species, Rhaphium pogonini sp.n. from the Oka Nature Reserve, Russian Ryazanskaya Oblast, is described and illustrated. The new species appears to be close in habitus to the Holarctic R. elegantulum (Meigen, 1824) (with ventral spine on mid coxa) and Far Eastern R. johnrichardi Negrobov et Grichanov, 2010 (without ventral spine on mid coxa), differing from them mainly in shape of male hypopygial surstylus, which is curved, very broad and long, nearly reaching apex of cercus. R. elegantulum and R. johnrichardi male surstylus is straight, thin and relatively short, about half as long as cercus. R. samarkandiense Negrobov et Grichanov, 2010, is placed in synonymy with R. turanicola (Stackelberg, 1927) (syn.n.). Sixteen species of long-legged flies are reported from the Oka Reserve for the first time. A checklist of 138 Dolichopodidae species known from the Oka Nature Reserve is compiled with corrected nomenclature.

KEY WORDS: Rhaphiinae, Rhaphium, new species, Palaearctic Region, Ryazanskaya Oblast.

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