Swammerdamia caesiella

Swammerdamia caesiella is a moth of the family Yponomeutidae. It is found from most of Europe to Japan. It is also present in North America,[2] where it is possibly an introduced species.[3]

Gnawed birch leaves
Larva

Swammerdamia caesiella
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Yponomeutidae
Genus: Swammerdamia
Species:
S. caesiella
Binomial name
Swammerdamia caesiella
(Hübner, 1796)[1]
Synonyms
  • Tinea caesiella Hübner, 1796
  • Swammerdamia heroldella Hübner, [1825]
  • Swammerdamia heroldella
  • Tinea nubeculella Tengström, 1848
  • Swammerdamia nubeculella
  • Tinea griseocapitella Stainton, 1851
  • Swammerdamia griseocapitella

The wingspan is 9–13 mm. The head is white.The thorax is white, sometimes anteriorly fuscous-sprinkled. Forewings are white, irregularly irrorated with fuscous; some longitudinal series of blackish dots ; antemedian dark fuscous fascia reduced to two spots, discal and dorsal ; two white spots on costa posteriorly, separated by a dark fuscous spot ; cilia coppery-tinged, with two dark purplish-fuscons lines. Hindwings are pale fuscous.The larva is reddish-brown ; dorsal line broad, paler, becoming indistinct posteriorly ; spiracular broad, yellowish -white ; head pale yellow-ochreous.[4]

They are on wing from May to June and again in August in two generations per year.[5]

The larvae feed on Betula species. They feed on the parenchyma on the upperside of a leaf, beneath a silken web.

References
  1. Fauna Europaea
  2. Swammerdamia at funet
  3. Bug Guide
  4. Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf This article incorporates text from this source, which is in the public domain. Keys and description
  5. UKmoths


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