Study on Humbleflies Species Biodiversity (Diptera: Bombyliidae) in the Western Margin of the Caspian Sea Coastline

Abstract

In order to evaluate the Bombyliid species diversity in Guilan province, statistical sampling was
performed from designated stations in the desired areas. Totally 20 species belonging to 11 genera were
collected as below;
Callostoma soror Loew, 1873, Conophorus pseudaduncus Paramonov, 1929, Exoprosopa amseli
Oldroyd, 1961, Exoprospora dispar Loew, 1869, Exoprosopa efflatounbeyi Paramonov, 1928, Exoprosopa
grandis (Wiedemann in Meigen, 1820), Exoprosopa kirgizorum Paramonov, 1928, Exoprosopa pectoralis
Loew, 1862, Hemipenthes subvelutinus Zaitzev, 1966, Heteralonia megerlie (Meigen, 1820), Heteralonia
suffuse Klug, 1832, Thyridanthrax elegans (Wiedemann in Meigen, 1820), Thyridanthrax griseolus (Klug,
1832), Thyridanthrax punctum (Loew, 1854), Veribubo misellus, Loew 1869, Lomatia belzebul (Fabricius,
1794), Parageron lutescens (Bezzi, 1925), Usia bicolor Macquart, 1855, Phthiria pulicaria (Mikan, 1796)
and Phthiria vagans Loew, 1846.
Most of the collected species were from the genus Exoprosopa Macquart, 1840 with relative
frequency 54.83 %. According to Shanon-winner index 1.97 the highest species diversity was related to
the Darestan region.