Bug FAQHop Vine Snout
Hypena humuli · Order: Lepidoptera · Family: Erebidae
Also called: Hop Vine Moth
The hop vine snout moth has a wingspan of about 25 to 32 mm and its caterpillars are about an inch long, greenish-white, semi-transparent and striped with fourteen legs, a yellowish mouth and black jaw tips. The larvae feed on hop, nettle, wood nettle and related Laportea species, appear from early June through late August, and there are two generations per year in most of the east.
Source: Wikipedia
How to recognize it
The caterpillar is about an inch long, greenish-white, watery or semi-transparent, slightly striped and dotted, with fourteen legs. Its mouth is yellowish and the tips of its jaws are black.
Source: Wikipedia
Size
The adult’s wingspan ranges from 25 to 32 mm.
Source: Wikipedia
Where it lives
It is found across Canada and the United States, from the east coast to the west coast.
Source: Wikipedia
What it eats
The larvae feed on hop, nettle, wood nettle and Laportea species.
Source: Wikipedia
Life cycle
There are two generations each year in most of the eastern part of its range. Larvae appear early in June and persist until late August.
Source: Wikipedia
Where it comes from
Its range includes coast-to-coast Canada and the United States, extending south to Florida, Arkansas and California.
Source: Wikipedia
Where it is found in the US
Recorded in 42 of 51 states and DC. Most records: Wisconsin, Vermont, Massachusetts, Montana, Ohio, Oregon, New York, Minnesota.
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
When can I see the caterpillars?
The larvae are present from early June through late August.
Source: Wikipedia
How many generations does it have each year?
In most of the eastern part of its range it produces two generations per year.
Source: Wikipedia
What plants do the larvae eat?
They feed on hop, nettle, wood nettle and Laportea species.
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/Hypena_humuli
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.