Tetheella fluctuosa (Hübner, [1803])


Tetheella fluctuosa: Adult (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Adult (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Adult (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Adult (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Half-grown larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Half-grown larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Half-grown larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larva (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Pupa (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Pupa (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Pupa (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Pupa (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Pupa (e.l. rearing, northern Germany, Lüneburger Heide, larva in August 2020) [S] Tetheella fluctuosa: Larval habitat with birch along a track through pine forest (northern Germany, Lüneburger Heide, larva in August 2020) [N]

Host plants:
The larvae feed on birch species (Betula).

Habitat:
Tetheella fluctuosa inhabits birch stands in wetlands, woodlands, heathlands and also anthropogenic sites.

Life cycle:
The pupa hibernates in a webbing between dead leaves etc. in the litter. The moths most often occur in a single generation between June and late July or early August. The larve are recorded between spun leaves from late July to mid-September.

Remarks:
Tetheella fluctuosa occurs in temperate Europe and Asia to Japan.