Bug FAQJulia's Idia Moth
Idia julia · Order: Lepidoptera · Family: Erebidae
Also called: Julia's Idia
Julia's Idia moth has a wingspan of about 17 mm. It lives from southern Canada down to Georgia and Texas. The caterpillars feed on dead leaf material and other detritus.
Source: Wikipedia
How to recognize it
Idia julia belongs to the litter moth group in the family Erebidae.
Source: Wikipedia
Size
The adult’s wingspan measures roughly 17 mm.
Source: Wikipedia
Where it lives
It is found across a range that stretches from southern Canada to the southern United States, reaching as far as Georgia and Texas.
Source: Wikipedia
What it eats
Larvae consume detritus, especially dead leaves.
Source: Wikipedia
Life cycle
In the northern part of its range there is one generation per year, while farther south multiple generations occur.
Source: Wikipedia
Where it comes from
Its native distribution includes southern Canada down through the United States to Georgia and Texas.
Source: Wikipedia
Where it is found in the US
Recorded in 33 of 51 states and DC. Most records: Maryland, New Jersey, Alabama, North Carolina, Tennessee, Virginia, Connecticut, Oklahoma.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
How many generations does Julia's Idia moth have each year?
One generation in the north and several generations in the south.
Source: Wikipedia
Where is Julia's Idia moth found?
From southern Canada down to Georgia and Texas in the United States.
Source: Wikipedia
Same family (Erebidae)
Spongy MothLymantria disparDamages trees, gardens or crops
Fall Webworm MothHyphantria cuneaDamages trees, gardens or crops
Brown-tail MothEuproctis chrysorrhoeaCan irritate skin
Isabella Tiger MothPyrrharctia isabella
Virginian Tiger MothSpilosoma virginicaCan irritate skin
Salt Marsh MothEstigmene acreaSources
- Wikipedia: https://en.wikipedia.org/wiki/Idia_julia
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.