Olivaceous Eucosma - Hodges#2998
Eucosma olivaceana
This record describes Eucosma olivaceana (species). Recorded family: Tortricidae. Recorded order: Lepidoptera.
Identification and Appearance

Riley reported that the larvae are parisitized by the wasp Pimpla annulipes
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Tortricoidea
- Family
- Tortricidae (Tortricid Moths)
- Subfamily
- Olethreutinae
- Tribe
- Eucosmini
- Genus
- Eucosma
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Prairies. ( 5 )
Geographic Range
Records from Illinois and Maryland, north to Maine and Quebec. ( 4 ) Type locality: Illinois (J.R. Muhleman ).
Seasonal Activity
It is not clear from records of adults on Block Island , RI, whether the species is univoltine or bivoltine there; it may have a single highly asynchronous generation with fresh adults found from June to August and a single peak in abundance in July. ( 6 )
Diet and Behavior
Diet: Larva folds leaves and bores into stem tips of Goldenrod Solidago (Riley)
Additional species information
Species notes from the sources
Etymology: Specific epithet mean "olivaceous" for the for the coloring of the thorax and wings.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Eucosma olivaceana. 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 Olivaceous Eucosma - Hodges#2998 (5)
Photo credits: Contributed by tom murray; Additional contributions by Steve Nanz , Randy Hardy , Fyn Kynd , Blocky
Frequently Asked Questions About Olivaceous Eucosma - Hodges#2998
What is Olivaceous Eucosma - Hodges#2998?
Olivaceous Eucosma - Hodges#2998 (Eucosma olivaceana) is a species in the family Tortricidae, within the order Lepidoptera.
How big is Olivaceous Eucosma - Hodges#2998?
| Feature | Description |
|---|---|
| Forewing | Forewing length 7.5-9.0 mm. |
| Wingspan | Wingspan 18 mm. |
Where is Olivaceous Eucosma - Hodges#2998 found?
| Feature | Details |
|---|---|
| Habitat | Prairies. ( 5 ) |
| Range | Records from Illinois and Maryland, north to Maine and Quebec. ( 4 ) Type locality: Illinois (J.R. Muhleman ). |
What does Olivaceous Eucosma - Hodges#2998 eat?
The diet of the Olivaceous Eucosma - Hodges#2998 includes Larva folds leaves and bores into stem tips of Goldenrod Solidago (Riley).
When is Olivaceous Eucosma - Hodges#2998 active?
Olivaceous Eucosma - Hodges#2998: seasonal activity - It is not clear from records of adults on Block Island , RI, whether the species is univoltine or bivoltine there; it may have a single highly asynchronous generation with fresh adults found from June to August and a single peak in abundance in July. ( 6 ).
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