Archips cerasivorana
In 3 days ~10% in a week ~20%
Archips cerasivorana, the ugly-nest caterpillar moth, is a species of moth of the family Tortricidae. The caterpillars of this species are known to create nests by tying the leaves of their host plant together. Caterpillars are seen to follow one another in trails, a behavior prompted by the release of signaling pheromones from their spinnerets.
A. cerasivorana is found throughout North America, as far north as Alaska and as far south as North Carolina. The wingspan is 20–25 mm. Adults can be found from July to September in one generation per year. A. cerasivorana is commonly referred to as the ugly-nest caterpillar moth. It is a species of moth in the family Tortricidae. Related species include Archips fervidana. Archips rileyana is very similar to A. cerasivorana, both in appearance and larval habits. At first, A. rileyana was considered a subspecies of A. cerasivorana, but Obraztsov (1959) demonstrated that both adults and larvae of the two species can be separated.
A. cerasivorana is characterized by an uncus with parallel sides in the male, a large blunt signum in the female, and smaller, sometimes body-colored pinncula on the larval abdomen. In contrast, A. rileyana... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Calgary | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report an Ugly-Nest Caterpillar Moth sighting in Calgary on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 203rd most-seen of the 256 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Ugly-Nest Caterpillar Moth in Calgary on a given day, so our monthly data shows no clear season.
Only Calgary, in our data
Calgary is the only city on Wallace's Line with enough records to rate Ugly-Nest Caterpillar Moth sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ugly-Nest Caterpillar Moth is recorded against all the insects logged in Calgary (6 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
