Ditaeniella grisescens (Meigen, 1830)

Khaghaninia, S., Kazerani, F. & Vala, Jean-Claude, 2018, New Data About Snail-Killing Flies (Diptera, Sciomyzidae) In Iran, Vestnik Zoologii 52 (1), pp. 21-30 : 22

Ditaeniella grisescens (Meigen, 1830)

Material examined: Iran: East Azerbaijan Province, Gharadagh (forests habitat) [38°5´N, 46°52´E, 1770 m], 15.06.2009, 1 ♂, 2 ♀ ; Qurigol (lagoon habitat) [37°54´.975 N, 46°41´,120 E, 1943 m], 9.06.2010, 3 ♂, 4 ♀ ; Kandovan (moist grassland habitat) [37°46´N, 46°16´E, 2500 m], 15.07.2010, 1 ♂, 1 ♀ (Khaghaninia leg.) .

D i s t r i b u t i o n. Widespread in North and South Europe, North Africa. Oriental Region; Middle East: Afghanistan, Turkey, Mongolia. Iran: Rozkošný (1987); Knutson et al. (1973).

Biology. Larvae are predators as well some terrestrial ( Haplotrematidae , Helicidae , Polygyridae ) as freshwater gastropods ( Lymnaeidae , Physidae , Planorbidae ), and also the hygrophilous Succineidae ( Bratt et al., 1969) . Firstly, Rozkošný (1967) described the larval and puparial stages. As Pherbellia grisescens, Bratt et al. (1969) described the entire life cycle and detailed all the immature stages. The puparium is formed inside the host snail, and overwinters there ( Bratt et al., 1969).