Larch Needleworm - Hodges#3241
Zeiraphera improbana
This record describes Zeiraphera improbana (species). Recorded family: Tortricidae. Recorded order: Lepidoptera.
Identification and Appearance

Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Tortricoidea
- Family
- Tortricidae (Tortricid Moths)
- Subfamily
- Olethreutinae
- Tribe
- Eucosmini
- Genus
- Zeiraphera
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Transcontinental in southern Canada and northern United States. Type locality: St. Martin's Falls, Albany River, Hudson's Bay Company, Ontario (George Barnston ).
Diet and Behavior
Diet: Larval hosts: tamarack ( Larix laricina ) western larch ( Larix occidentalis )
Additional species information
Species notes from the sources
Etymology: Specific epithet from Latin improbans meaning "disapproving."
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Zeiraphera improbana. 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 Larch Needleworm - Hodges#3241 (2)
Photo credits: Contributed by Charley Eiseman; Additional contributions by Randy Hardy
Frequently Asked Questions About Larch Needleworm - Hodges#3241
How big is Larch Needleworm - Hodges#3241?
Wingspan 10-18 mm.
Where is Larch Needleworm - Hodges#3241 found?
Range: Transcontinental in southern Canada and northern United States. Type locality: St. Martin's Falls, Albany River, Hudson's Bay Company, Ontario (George Barnston ).
What does Larch Needleworm - Hodges#3241 eat?
The diet of the Larch Needleworm - Hodges#3241 includes Larval hosts: tamarack ( Larix laricina ) western larch ( Larix occidentalis ).
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