Dusky-Blue Groundstreak

Dusky-Blue Groundstreak

Calycopis isobeon

Daily sighting probability <5% · Rare
at San Antonio

In 3 days ~10% in a week ~20%

10 Verified sightings at San Antonio
5 In 1 park From 2019 to 2026
November Best month
☀️ Diurnal When it's spotted

About the Dusky-Blue Groundstreak

Calycopis isobeon, the dusky-blue groundstreak, is a butterfly native to the Americas, ranging from Venezuela to central Texas. It is very similar to the red-banded hairstreak (Calycopis cecrops) and the two are sometimes treated as conspecific. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Parque Natural Metropolitano 🇵🇦 Panama
<5%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Austin 🇺🇸 United States
<5%
2 Houston 🇺🇸 United States
<5%
3 Dallas 🇺🇸 United States
<5%
4 San Antonio 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Dusky-Blue Groundstreak in San Antonio?

Rare

Under 5% of wildlife watchers report a Dusky-Blue Groundstreak sighting in San Antonio on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 478th most-seen of the 697 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.

When is the best time to see a Dusky-Blue Groundstreak in San Antonio?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Dusky-Blue Groundstreak in San Antonio on a given day, so our monthly data shows no clear season.

What time of day is best to see a Dusky-Blue Groundstreak?

Between 8 and 11 am

Across all the parks we cover, that three-hour window holds the most Dusky-Blue Groundstreak sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is San Antonio the best place to see a Dusky-Blue Groundstreak?

Among the best

Of the 4 cities where we can rate Dusky-Blue Groundstreak sightings, San Antonio ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%), Houston (United States, under 5%) and Dallas (United States, under 5%).

Which relatives of the Dusky-Blue Groundstreak live in San Antonio?

Same family: Lycaenidae

The closest relatives of the Dusky-Blue Groundstreak that you can see in San Antonio (family Lycaenidae, Gossamer-winged Butterflies) are Gray Hairstreak (about 20%), Reakirt's Blue (about 20%) and Ceraunus Blue (about 20%), with each one's daily chance of a sighting.

Where does the Dusky-Blue Groundstreak sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Dusky-Blue Groundstreak is recorded against all the insects logged in San Antonio (10 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.

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