Gerdana caritella
In 3 days ~10% in a week ~20%
Gerdana is a genus of moths in the family Autostichidae. It contains only one species, Gerdana caritella, which is found in North America, where it has been recorded from southeastern Canada and the eastern United States.
The wingspan is 13–17 mm. The forewings are light yellow, suffused with darker saffron-yellow. The basal half of the costal edge is darkened with black dusting. The hindwings are whitish fuscous. Adults are mainly on wing from June to August.
The larvae have been recorded feeding on Phoradendron, Picea mariana and Picea pungens. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Gerdana caritella sighting in Boston on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 888th most-seen of the 1200 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 a Gerdana caritella in Boston on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Gerdana caritella sightings, Boston ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%), Toronto (Canada, under 5%) and Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Gerdana caritella is recorded against all the insects logged in Boston (7 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.
