Oslar's Oakworm Moth - Hodges#7722
Anisota oslari
This record describes Anisota oslari (species). Recorded family: Saturniidae. Recorded order: Lepidoptera.
Identification and Appearance

Larva - last instars are brick red. See photos at Moths of Southeastern Arizona in Internet References. Has been successfully crossed with A. senatoria in the lab. See Peigler & Williams in Print References.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Bombycoidea
- Family
- Saturniidae (Giant Silkworm and Royal Moths)
- Subfamily
- Ceratocampinae
- Genus
- Anisota
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Southwestern Colorado to west Texas, southern New Mexico and southern Arizona, south into Chihuahua, Mexico. Type locality: Nogales, Santa Cruz County, Arizona (July).
Diet and Behavior
Diet: Larvae are known to feed on oaks, including Mexican blue oak ( Quercus oblongifolia ), scrub oak ( Q. turbinella ), and Emory oak ( Q. emoryi ) ,
Life History
Eggs laid in clusters, young larvae feed gregariously.
Additional species information
Species notes from the sources
Etymology: Named in honor of professional insect collector Ernest J. Oslar, who collected the first specimens.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Anisota oslari. 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 Oslar's Oakworm Moth - Hodges#7722 (5)
Photo credits: Contributed by Tom Bentley; Additional contributions by Vox Sciurorum , Randy Hardy
Frequently Asked Questions About Oslar's Oakworm Moth - Hodges#7722
What is Oslar's Oakworm Moth - Hodges#7722?
Oslar's Oakworm Moth - Hodges#7722 (Anisota oslari) is a species in the family Saturniidae, within the order Lepidoptera.
How big is Oslar's Oakworm Moth - Hodges#7722?
Forewing length 2.2-4.0 cm.
How do you identify Oslar's Oakworm Moth - Hodges#7722?
Larva - last instars are brick red. See photos at Moths of Southeastern Arizona in Internet References.
Where is Oslar's Oakworm Moth - Hodges#7722 found?
Range: Southwestern Colorado to west Texas, southern New Mexico and southern Arizona, south into Chihuahua, Mexico. Type locality: Nogales, Santa Cruz County, Arizona (July).
What does Oslar's Oakworm Moth - Hodges#7722 eat?
The diet of the Oslar's Oakworm Moth - Hodges#7722 includes Larvae are known to feed on oaks, including Mexican blue oak ( Quercus oblongifolia ), scrub oak ( Q. turbinella ), and Emory oak ( Q. emoryi ) ,.
What is the life cycle of a Oslar's Oakworm Moth - Hodges#7722?
Eggs laid in clusters, young larvae feed gregariously.
FROM LOOKING IT UP TO GETTING TO KNOW IT
Make sense of the bugs at home.50 household bug profiles for you. Photos, coloring, and activities for curious kids.





