| revision of the species of the merodon nanus group (diptera: syrphidae) including three new species. | the nanus group of the genus merodon meigen (diptera, syrphidae) is revised, yielding an illustrated key, a discussion of taxonomic characters and morphological diagnosis for the five species of this group. three new cryptic species are described, merodon kopensis vujić et hayat sp. n., m. neonanus vujić et taylor sp. n. and m. rasicus vujić et radenković sp. n. new diagnostic characters are given for m. nanus sack and m. telmateia hurkmans. in addition, environmental profiles for each investiga ... | 2015 | 26623777 |