Planetella arenariae (Rübsaamen, 1899)

Fjellberg, Arne & Fedotova, Zoya, 2024, New records of gall midges (Diptera, Cecidomyiidae) from Norway, Norwegian Journal of Entomology 71, pp. 8-94 : 47

* Planetella arenariae (Rübsaamen, 1899)

( Figure 25 A–B )

Material: VE, Faerder: Sandø, 59.08434°N 10.46712°E ± 50m, 13 August 2019, on Carex arenaria , 4L, leg. AF, BOLD : NHMO- ENT-548138, coll. NHMO.

Biology: The larvae develop in small eggshaped galls situated mostly underground on the root collar of Carex spp. ( Cyperaceae ). The plant above the gall site becomes stunted. Usually bivoltine. Pupation and hibernation in the gall.

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

Figures

FIGURE 25. A–B. Planetella arenariae. A. Galls on root collar of Carex arenaria. B. Front of larva, ventral view, showing forked sternal spatula. C–D. Planetella gallarum. C. Galls on root collar of Carex cf. nigra. D. Front of larva, ventral view, showing single-toothed sternal spatula. Photos:A. Fjellberg (A, C, D), H. Elven (B).