Cosmia trapezina
Seq # 901600020
Cosmia pyralina

Cosmia diffinis (Linnaeus, 1767) Species

Last modified: Sept. 16, 2023, 11:16 a.m.

This very rare, local and decling species has not been seen in Belgium for quite some time.
This moth underwent a rapid decline as a result of Dutch elm disease during the 1980's and also due to destruction of riparian woodlands and dewatering of lowland swamps.

Details

Classification
Family: Noctuidae > Subfamily: Xyleninae > Tribus: Xylenini > Genus: Cosmia > Subgenus: Cosmia > Species: Cosmia diffinis
Vernacular names
Iepenuil (NL), White-spotted Pinion (EN), Le Nacarat (FR), Weißflecken-Ulmeneule (DE)
First mention in Belgium
De Sélys-Longchamps E. 1844. Énumération des insectes Lépidoptères de la Belgique. — Mémoires de la Société royale des Sciences de Liége 2: 1–35. On page 13.
Status

Native

Distribution

Imago

Wingspan: 29–36 mm.

Museum specimens

No pictures yet!

Specimens in nature

No pictures yet!

Cocoon/pupa

Hibernates as an egg.. The larvae develop between mid-April and mid-June and live between spun leaves.

No pictures yet!

Flight periods

The moths fly between mid-June and August.

Observed on

Host plant (species):
Ulmus procera and Ulmus glabra

The larvae feed on Ulmus, especially Ulmus laevis and U. minor.

No pictures yet!
Contact
Statistics
Flemish Entomological Society

jurate.deprins@gmail.com
    Species presence
  • 1791 West-Vlaanderen
  • 1791 Oost-Vlaanderen
  • 1965 Antwerpen
  • 1919 Limburg
  • 213 Vlaams Brabant
  • 1915 Brabant
  • 28 Brabant Wallon
  • 1674 Hainaut
  • 2217 Namur
  • 2140 Liège
  • 2220 Luxembourg