Archips semiferanus
In 3 days ~10% in a week ~30%
Archips semiferanus (also known as Archips semiferana) is a species of moth in the family Tortricidae, and one of several species of moth commonly known as oak leafroller or oak leaf roller. The larvae feed on the leaves of oak trees in the eastern United States and southeastern Canada and are a major defoliator of oak trees, which can lead to tree mortality. In Pennsylvania in the late 1960s and early 1970s, oak leafrollers defoliated over 1,045,000 acres (423,000 ha).
Adult Archips semiferanus moths lay masses of 40 to 50 eggs on oak tree branches and rough bark in July; these overwinter and hatch the next spring. The larvae eat tree buds and young leaves, then roll leaves together with silk (hence the name). They nest and eat inside the rolled leaves, then pupate in the leaves or crevices in June. After a few weeks the adult moths emerge, mate and lay the next generation of eggs.
Archips semiferanus was first described by Francis Walker in 1863, and is sometimes referred to as Archips semiferana, or as Capua semiferana. Both synonyms are also attributed to Walker. The larvae roll oak leaves together with silk, which gives the insect its common name.
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| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Oak Leafroller Moth sighting in Austin on a given day, based on 68 verified sightings from GBIF citizen-science data. It is the 481st most-seen of the 1624 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April and May
In those months about 10% of wildlife watchers report an Oak Leafroller Moth in Austin on a given day, against under 5% in June to March, the lowest months.
Yes
Of the 4 cities where we can rate Oak Leafroller Moth sightings, Austin has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and Dallas (United States, under 5%).
Same genus: Archips
The closest relatives of the Oak Leafroller Moth that you can see in Austin (genus Archips) are Fruit-Tree Leafroller Moth (about 10%) and Gray Archips Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oak Leafroller Moth is recorded against all the insects logged in Austin (68 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.
