Feniseca tarquinius
In 3 days ~20% in a week ~40%
Feniseca tarquinius, the harvester, is a butterfly of the family Lycaenidae, and the only member of the monotypic genus Feniseca. It is found in eastern North America. As a member of the subfamily Miletinae, this butterfly is entirely carnivorous (specifically insectivorous), making it the only obligate carnivore butterfly in North America. The larvae feed on various aphids, such as Neoprociphilus, Pemphigus, Prociphilus, and Schizoneura.
It is found in early spring until fall and is generally scarce. It lives in wooded areas near streams close to alders. The wingspan is 23–32 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | Washington | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Harvester sighting in Great Smoky Mountains National Park on a given day, based on 26 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 184th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March to August
In those months about 10% of wildlife watchers report a Harvester in Great Smoky Mountains National Park on a given day, against under 5% in September to February, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Harvester sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Harvester sightings, Great Smoky Mountains National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, under 5%) and Acadia National Park (United States, under 5%).
Same family: Lycaenidae
The closest relatives of the Harvester that you can see in Great Smoky Mountains National Park (family Lycaenidae, Gossamer-winged Butterflies) are Elkalyce comyntas (about 20%), Cyaniris neglecta (about 20%) and Red-Banded Hairstreak (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Harvester is recorded against all the insects logged in Great Smoky Mountains National Park (26 verified sightings from 2019 to 2026), 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.
