Seq # 285010320

Mompha divisella Herrich-Schäffer, 1854 Species

Last modified: April 12, 2021, 11:29 a.m.

A very rare and local species in Belgium.


Family: Momphidae > Genus: Mompha > Subgenus: Mompha > Species: Mompha divisella
Vernacular names
Basterdwederikgalmot (NL)
Mompha decorella sensu auct.
First mention in Belgium
De Fré Ch. 1858. Catalogue des Microlépidoptères de la Belgique. — Annales de la Société entomologique belge 2: 45–162. On page 149. view page




Wingspan is about 16 mm.
Moths with pure white, undivided inner marginal stripes can be clearly identified as Mompha divisella. However, especially in males, the inner margin is often darkened, which is why such specimens cannot be reliably determined without genital examination.

Museum specimens

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Specimens in nature



Pupa black.

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The larva lives inside the stem of its foodplant and causes a gall generally at one of the nodes. Pupation inside the stem with the head downwards towards the exit hole.
The species hibernates in the adult stage. In mild winters adults have been seen during December and January flying around by daytime. The adults are active at night and occasionally come to light.

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Flight periods

One generation a year: from August and, after hibernation, till May.

Observed on

Host plant (species):
Epilobium montanum, Epilobium palustre, Epilobium lanceolatum, Epilobium parviflorum and Epilobium hirsutum

Oligophagous on Epilobium.

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