Incisalia henrici
In 3 days ~10% in a week ~30%
Callophrys henrici, the Henry's elfin or woodland elfin, is a North American butterfly in the family Lycaenidae. In Canada it is found from southern Manitoba to southern Nova Scotia. It has two main groups of populations in the United States; the first is found along the Atlantic Coast and uses various hollies (Ilex) as host plants; and the second is found mainly in the north and the Appalachians where they use redbud (Cercis canadensis) as a host plant. Henry's elfin is increasing in New England because of an introduced buckthorn (Rhamnus cathartica) it now uses as a host plant. It is listed as a species of special concern in the US state of Connecticut.
The upperside of the wings is a dark brown color. The underside of the wings is strongly two toned with the basal area being dark brown black. The hindwing postmedian line has white at both ends. The outer edge of the hindwing is frosted and the outer edge of the forewing is sometimes green toned. The hindwing has tails that are short and stubby. In the southeast, these tails are longer. The male lacks a stigma. Henry's elfin's wingspan measures 20 to 25 mm (0.79 to 0.98 in)
Similar species... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | San Antonio | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Dallas | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Henry's Elfin sighting in Austin on a given day, based on 71 verified sightings from GBIF citizen-science data. It is the 406th 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.
March
In that month about 20% of wildlife watchers report a Henry's Elfin in Austin on a given day, against under 5% in April to January, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Henry's Elfin 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 4 cities where we can rate Henry's Elfin sightings, Austin has the highest daily chance: about 10%. Next come San Antonio (United States, under 5%) and Boston (United States, under 5%).
Same family: Lycaenidae
The closest relatives of the Henry's Elfin that you can see in Austin (family Lycaenidae, Gossamer-winged Butterflies) are Gray Hairstreak (about 30%), Reakirt's Blue (about 10%) and Ceraunus Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Henry's Elfin is recorded against all the insects logged in Austin (71 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.
