West Palaearctic species of the genus Diostracus Loew, 1861 (Diptera: Dolichopodidae)

Abstract

A new status (as subgenera of Diostracus Loew, 1861) for Sphyrotarsus Mik, 1874, Lagodechia Negrobov & Tsurikov, 1996 and Ozmena Özdikmen, 2010 stat. nov. is proposed. A new species, Diostracus (Sphyrotarsus) kustovi sp. nov., is described from the Russian Caucasus. The following recombinations (comb. nov.) are also proposed: Diostracus (Sphyrotarsus) argyrostomus (Mik, 1874); D. (S.) caucasicus (Negrobov, 1965); D. (S.) hervebazini (Parent, 1914); D. (S.) hessei (Parent, 1914); D. (S.) hygrophilus (Becker, 1891); D. (S.) leucostomus (Loew, 1861); D. (S.) parenti (Hesse, 1933); D. (Lagodechia) spinulifer Negrobov & Tsurikov, 1988; and D. (Ozmena) stackelbergi (Negrobov, 1965). A key to ten Diostracus species inhabiting the West Palaearctic Region is provided.

Review of Predatory Flies of the Family Dolichopodidae (Diptera) in Iran

“…Argyra leucocephala (Meigen, 1824) Becker, 1908 andSyntormon zelleri (Loew, 1850) from that collection were reported from Iran for the first time (Grichanov et al 2010). Later Sciapus iranicus Grichanov, Negrobov was described from the same collection as new for science (Grichanov, Negrobov, 2014 (Stackelberg, 1933), P. basilicus (Loew, 1869), P. chrysozygos (Wiedemann, 1817) and P. comitialis (Kowarz, 1867) (Khaghaninia et al, 2013b); Diaphorus sublautus Negrobov, 2007, Dolichopus austriacus Parent, 1927, D. campestris Meigen, 1824, D. immaculatus Becker, 1909, D. subpennatus d'Assis Fonseca, 1976, D. ungulatus (Linnaeus, 1758 and Hercostomus phoebus Parent, 1927 ; Chrysotimus molliculus (Fallén, 1823); Hercostomus apollo (Loew, 1869); Hydrophorus balticus (Meigen, 1824); Medetera meridionalis Negrobov, 1967;Orthoceratium lacustre (Scopoli, 1763) and Poecilobothrus principalis (Loew, 1861) (Kazerani et al, 2014a). A new species Dolichopus malekii Grichanov, Khaghaninia, Gharajedaghi was described from the East Azerbaijan province .…”

A new species of Diostracus Loew, 1861 (Diptera: Dolichopodidae) from China with a key to species from the Yunnan Province

“…See Grichanov [2013] for diagnosis of the genus. Grichanov [2013] recognised 4 subgenera of the genus, i.e. Diostracus Loew, 1861, Sphyrotarsus Mik, 1874, Lagodechia Negrobov, Tsurikov, 1996, and Ozmena Özdikmen, 2010.…”

“…According to Grichanov [2013], the new species belongs to the subgenus Lagodechia, which differs from other subgenera in the absence of dorsal setae on antennal scape, presence of 1 pair of long bristles on scutellum, short postpedicel with dorsal stylus [Negrobov, Tsurikov, 1996]. Following the key to Chinese species [Yang et al, 2011], the new species is close to ungrouped D. nishiyamai Saigusa, 1995 (here associated with the subgenus Lagodechia), which has entirely simple wing, tibiae and tarsi, and oval male cercus.…”

“…It was recently reviewed by Yang et al [2011] for the Chinese fauna, Grichanov [2013] for the West Palaearctic fauna (including Pamirs), and Wang et al [2015] for the Himalayan fauna. Four species were described from the northernmost mountains of Myanmar [Saigusa, 1995].…”

First data on Dolichopodidae (Diptera) of the West Kotlin Nature Reserve (Saint Petersburg, Russia)

“…According to Grichanov's key (2006), S. filiger females differ from those of close species of the genus in mainly dark fore coxa bearing mostly black hairs and setae; mid coxa with one black seta; fore tibia without serration; frons mat; lower calypter with black cilia. Until recently, some keys, catalogs and checklists (e.g., Negrobov, 1991;Grichanov, 2006) placed S. rufipes (Meigen, 1824) in synonymy to S. pumilus (Meigen, 1824) or considered it a valid species (now an unrecognized species of Rhaphium, see Grichanov, 2013), ignoring a new name Syntormon filiger Verrall, 1912 for Syntormon rufipes (Zetterstedt, 1849, et alii auct. ), nec Meigen, 1824 (misidentification); therefore, old records of S. rufipes and S. pumilus from the Leningrad Region (Stackelberg, 1962) must be confirmed, because they could belong to S. filiger.…”