Tetanocera arrogans 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 : 26

Tetanocera arrogans Meigen, 1830

Material examined: Iran: East Azerbaijan Province, Ahar (grassland habitat) [38°26´N, 46°53´E, 1530 m], 10.06.2011, 1 ♂, 2 ♀ (Khaghaninia leg.).

D i s t r i b u t i o n. North Europe: Denmark, Sweden, Finland, Norway. South Europe: Ireland, Spain, Greece. Asia: Turkey. First record from Iran.

Biology. Rozkošný (1967) described the puparium and the cephalopharyngeal skeleton of the third instar larva extracted from this single puparium. The complete larval developmental and the life cycle have been explained by Vala (1989). In nature, third instar larva had been found to living as parasitoide in Succinea elegans , and many eggs jointed by their extremities and laid along the veins of Iris pseudacorus leaves ( Vala, 1989). In laboratory, larvae attacked also Cepaea nemoralis (Linnaeus, 1758) and Hygromia hispida (Linnaeus, 1758) ( Vala, 1989) . The puparium is formed outside of snail host and can be parasitized by Mesoleptsus spp.(Icheuneumonidae) ( Vala, 1989). This species is multivoltine and overwinters as pupa ( Vala, 1989).

D i a g n o s t i c c h a r a c t e r s: whitish pruinose patches forming occipital spots fused in basal half (fig. 2, c), anterior orbital setae close to vertical setae than to anterior margin of frons (fig. 2, b, c); antenna yellow, arista with long brown hairs (fig. 2, b); wing hyaline slightly darkened as in fig. 1, a; surstylus as in fig. 1, d.