Hulstina imitatrix - Hodges#6541
Hulstina imitatrix
This record describes Hulstina imitatrix (species). Recorded family: Geometridae. Recorded order: Lepidoptera.
Identification and Appearance

Detailed description can be found in Rindge at link in the citations below. From the key to species in Rindge, the PM line does not reach the costal margin, the forewing median area pale brown, and found from eastern California and Nevada north to Idaho. Genitalia: ♀ ♂
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Geometroidea
- Family
- Geometridae (Geometrid Moths)
- Subfamily
- Ennominae
- Tribe
- Boarmiini
- Genus
- Hulstina
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
western portion of Great Basin from eastern California to Idaho
Seasonal Activity
April, June, July, August
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Hulstina imitatrix. 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 Hulstina imitatrix - Hodges#6541 (5)
Photo credits: Contributed by Maury J. Heiman; Additional contributions by Robert H. Biagi , Steve Morris
Frequently Asked Questions About Hulstina imitatrix - Hodges#6541
What is Hulstina imitatrix - Hodges#6541?
Hulstina imitatrix - Hodges#6541 (Hulstina imitatrix) is a species in the family Geometridae, within the order Lepidoptera.
How big is Hulstina imitatrix - Hodges#6541?
forewing length = 14-17 mm
How do you identify Hulstina imitatrix - Hodges#6541?
Detailed description can be found in Rindge at link in the citations below. From the key to species in Rindge, the PM line does not reach the costal margin, the forewing median area pale brown, and found from eastern California and Nevada north to Idaho. Genitalia: ♀ ♂
Where is Hulstina imitatrix - Hodges#6541 found?
Range: western portion of Great Basin from eastern California to Idaho
When is Hulstina imitatrix - Hodges#6541 active?
Hulstina imitatrix - Hodges#6541: seasonal activity - April, June, July, August.
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