Paphiopedilum barbigerum T. Tang et F. T. Wang, a slipper orchid native to southwest China and northern Vietnam, produces deceptive flowers that are self-compatible but incapable of mechanical self-pollination (autogamy). The flowers are visited by females of Allograpta javana and Episyrphus balteatus (Syrphidae) that disperse the orchid's massulate pollen onto the receptive stigmas. Measuremen...

A new species of flower flies is described from China (Sichuan & Yunnan: Hengduan Mountains), Sericomyia khamensis Thompson & Xie). A key is provided to the species of the subtribe Sericomyiina found in China along with nomenclatural and taxonomical notes on them. 

Abstract The aim of the research was to study diversity hoverflies (Syrphidae: Diptera) living in areas under influence heavy metal emissions (Cd, Zn and Pb). Although area Olkusz Ore-bearing Region (OOR), where partially conducted, belongs contaminated regions, a relatively high species richness Syrphids has been noted. During period, total 1,180 syrphids, belonging 165 were caught, which cons...

during a survey conducted on syrphidae fauna in guilan province (masuleh & lakan) in august 2006, some species of the genus eristalis latreille were collected and identified, of which e. similis (fallen) is newly reported from iran. the identification was confirmed by heikki hippa, swedish musem of natural history.

a survey on the hover flies (diptera: syrphidae) fauna of northern iran, between 2010 and 2011, led to the discovery of the species pipiza accola violovitsh, 1985. both the genus and species are newly recorded from iran. all the specimens were collected from gilan and mazandaran provinces, using malaise traps. the diagnostic characters of p. accola and its geographical distribution is presented.