Bug FAQAndromache Underwing
Catocala andromache · Order: Lepidoptera · Family: Erebidae
The Andromache underwing is a moth in the family Erebidae with a wingspan of about 5 cm (50-55 mm). It lives in the southwestern United States, from southern California through Arizona, and its caterpillars eat several oak species. Adults fly in early summer, typically June and July, and there is probably one generation each year.
Source: Wikipedia
How to recognize it
Catocala andromache, known as the Andromache underwing, belongs to the moth family Erebidae.
Source: Wikipedia
Size
Its wingspan ranges from 50 to 55 mm.
Source: Wikipedia
What it eats
The larvae feed on the oak species Quercus dumosa, Quercus turbinella, and Quercus wislizeni.
Source: Wikipedia
Life cycle
There is probably one generation per year.
Source: Wikipedia
When you see it
Adults are on the wing from June to July, depending on location.
Source: Wikipedia
Where it comes from
Its native range is the southwestern United States, specifically southern California and Arizona.
Source: Wikipedia
Where it is found in the US
Recorded in 6 of 51 states and DC. Most records: California, Utah, Delaware, Indiana, Arizona, Wyoming.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When are Andromache underwing moths active?
Adults fly in early summer, usually from June through July.
Source: Wikipedia
What do the caterpillars eat?
They feed on several oak species, including Quercus dumosa, Quercus turbinella, and Quercus wislizeni.
Source: Wikipedia
How many generations do they have each year?
They likely produce one generation per year.
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 acreaDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Catocala_andromache
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.