Didymomyia tiliacea (Bremi, 1847)

Fjellberg, Arne & Fedotova, Zoya, 2024, New records of gall midges (Diptera, Cecidomyiidae) from Norway, Norwegian Journal of Entomology 71, pp. 8-94 : 87-88

Didymomyia tiliacea (Bremi, 1847)

( Figure 56 )

Material: AK, Asker: Brønnøya, Brønnøyveien 26, 59.855214°N 10.534224°E ± 6m, 4 June 2021, L, leg . HE, coll. NHMO; Brønnøya, Brønnøyveien 46, 59.851991°N 10.535628°E ± 4m, 10 June 2022, L, leg . HE, coll. NHMO.

Biology and notes: The white to pale yellow larvae develop in leaf galls on Tilia spp.

Elven et al.: New records of gall midges from Norway

( Malvaceae ). Our records are from T. cordata . The galls protrude on both sides of the leaf and are often surrounded by a red ring. The larva develops inside an inner gall, which eventually detaches from the main gall and falls to the ground. Hibernation takes place as a pupa within the inner gall. We collected immature galls in the spring. The larvae were then extremely small, but the species could be identified by the very characteristic galls. The species is redescribed in Skuhravá & Skuhravý (1960).

Distribution: Widespread Palearctic, including Norway, Sweden and Denmark.

Figures

FIGURE 56. Didymomyia tiliacea. A. Galled leaves of Tilia cordata. B. Underside of galls. Photos: H. Elven.