Ocnerostoma friesei
This record describes Ocnerostoma friesei (species). Recorded family: Yponomeutidae. Recorded order: Lepidoptera.
Identification and Appearance

Wingspan 8 to 10 mm. The males and females of this moth have different colourations. The males have pale grey forewings and those of the female are white. Various habitats but especially where Scots Pine is present. The species is bivoltine or even trivoltine, with flight periods in March to May, August and sometimes November. This is a species found associated with Scots Pine. Widespread, but occasional and local in Britain. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera
- Family
- Yponomeutidae
- Genus
- Ocnerostoma
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Various habitats but especially where Scots Pine is present.
Seasonal Activity
The species is bivoltine or even trivoltine, with flight periods in March to May, August and sometimes November.
Diet and Behavior
Life History
This is a species found associated with Scots Pine.
Additional species information
Recorded status
Widespread, but occasional and local in Britain. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Ocnerostoma friesei. Species-specific details appear above.
Group overview
Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.
Ecological role of the group
Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.
Economic and practical significance of the group
Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.
Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.
Photos of Ocnerostoma friesei (6)
Frequently Asked Questions About Ocnerostoma friesei
What is Ocnerostoma friesei?
Ocnerostoma friesei is a species in the family Yponomeutidae, within the order Lepidoptera.
Where is Ocnerostoma friesei found?
Habitat: Various habitats but especially where Scots Pine is present.
When is Ocnerostoma friesei active?
Ocnerostoma friesei: seasonal activity - The species is bivoltine or even trivoltine, with flight periods in March to May, August and sometimes November..
What is the life cycle of a Ocnerostoma friesei?
This is a species found associated with Scots Pine.
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