Ipimorpha retusa (Linnaeus, 1761)


Ipimorpha retusa: Adult (e.l. eastern Swabian Alb, Southern Germany ex May 2010) [S] Ipimorpha retusa: Adult (e.l. eastern Swabian Alb, Southern Germany 2010) [S] Ipimorpha retusa: Adult (e.l. Memmingen) [S] Ipimorpha retusa: Half-grown larva (eastern Swabian Alb, Southern Germany, May 2010) [S] Ipimorpha retusa: Larva (eastern Swabian Alb, Southern Germany, May 2010) [S] Ipimorpha retusa: Larva (Iller near Memmingen, Germany) [M] Ipimorpha retusa: Larva (eastern Swabian Alb, Southern Germany, May 2010) [S] Ipimorpha retusa: Pupa (eastern Swabian Alb, Southern Germany) [S] Ipimorpha retusa: Habitat in a floodplain with Salix bushes (eastern Württemberg, May 2011) [N]

Host plants:
The larvae feed on Salix species, especially Salix caprea, Salix cinerea and narrow-leaved species such as Salix purpurea or Salix alba. It is rarely also reported from Populus.

Habitat:
Ipimorpha retusa colonizes willow-rich forests, wetlands, floodplains, lakeshores and other softwood-rich habitats.

Life cycle:
Ipimorpha retusa flies in a single generation from late June to August. The caterpillars live from late April to mid-June in housings of spun shoot tips. The egg overwinter.

Remarks:
Ipimorpha retusa is widely distributed from Europe to Japan.


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