Iteomyia major (Kieffer, 1898)

Fjellberg, Arne & Fedotova, Zoya, 2024, New records of gall midges (Diptera, Cecidomyiidae) from Norway, Norwegian Journal of Entomology 71, pp. 8-94 : 69

Iteomyia major (Kieffer, 1898)

( Figure 39 C–D )

Material: NSI, Saltdal: Saltdalen, Dalmo , 66.873827°N 15.293076°E ± 50m, 16 July 2020, on Salix myrsinifolia , L, leg . HE, coll. NHMO; NSY, Gildeskål: Breivika, Breivikdalen , 66.997495°N 14.278931°E ± 4m, 22 July 2020, on Salix lanata , L, leg . HE, coll. NHMO.

Biology: The orange to red larvae develop in leaf galls on a wide range of Salix spp. ( Salicaceae ). Each larva develops in a globular, up to 5 mm wide gall which protrudes equally on both sides of the leaf and has a circular exit on the underside. Unlike the previous species, the galls are usually concentrated along the midrib or thick side veins and are usually fused together to form a single irregular gall structure. Univoltine; pupation and hibernation in the soil.

Distribution: Widespread in Europe including Norway, Sweden and Denmark. Morocco.

Figures

FIGURE 39. A–B. Iteomyia capreae. A. Leaf galls on Salix caprea. B. Larva in opened gall on Salix aurita. C–D. Iteomyia major. C. Leaf galls on Salix myrsinifolia. D. Larvae in opened galls on same. Photos: H. Elven.