Semudobia skuhravae Roskam, 1977

(Figure 57 B)

Material: AK, Oslo: Ellingsrud, Munkebekken, 59.931515°N 10.913550°E ± 20m, 14 March 2019, L, leg. HE, coll. NHMO; 23 February 2021, MF, leg. HE, coll. NHMO .

Biology: The orange larvae develop in female catkins of Betula pendula and B. pubescens ( Betulaceae). Our records are from B. pendula . Each larva develops in an oval gall at the base of a catkin scale, fusing the scale to the stalk of the catkin. The corresponding seed becomes stunted. Univoltine. The larva hibernates in the gall and pupates there in the spring.

Distribution: Widespread Holarctic, including Norway and Denmark.