Harmandiola tremulae (Winnertz, 1853)

Fjellberg, Arne & Fedotova, Zoya, 2024, New records of gall midges (Diptera, Cecidomyiidae) from Norway, Norwegian Journal of Entomology 71, pp. 8-94 : 44

Harmandiola tremulae (Winnertz, 1853)

( Figure 21 C–D )

Material: AK, Oslo: Ljanskollen , 59.839863°N 10.771831°E ± 250m, 9 August 2020, L, leg . HB & ØE, coll. NHMO; 59.838521°N 10.770813°E ± 400m, 30 July 2021, L, leg . HE, coll. NHMO; Romsås, Steinbruvannet , 59.970434°N 10.886088°E ± 20m, 5 September 2021, L, leg . HE, coll. NHMO; Eidsvoll: Dølihagen , 60.284598°N 11.292169°E ± 50m, 22 August 2020, L, leg . HE, coll. NHMO; N of Dølihagan , 60.284606°N 11.292188°E ± 50m, 15 August 2020, 4L, leg . TS, coll. NHMO; NSY, Gildeskål: Sund, Hestvikodden , 67.062185°N 14.089717°E ± 10m, 9 July 2021, L, leg . HE, coll. NHMO.

Biology: The orange-red larvae develop in leaf galls on Populus alba , P. x canescens and P. tremula ( Salicaceae ). Our records are all from P. tremula . The gall is up to about 6 mm across, ball shaped, thin walled, and situated on the upper side of the leaf. Univoltine; pupation and hibernation in the soil.

Distribution: Widespread in Europe including Norway, Sweden, Denmark and Finland. Kazakhstan and parts of Russia.

Figures

FIGURE 21. A–B. Harmandiola globuli. A. Leaf galls on Populus tremula. B. Larva. C–D. Harmandiola tremulae. C. Leaf galls on Populus tremula. D. Larva in opened gall. Photos:T. Starholm (A, B), H. Elven (C, D).