Tersa Sphinx

Tersa Sphinx

Xylophanes tersa

Daily sighting probability <5% · Rare
at New York City

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

20 Verified sightings at New York City
107 In all 8 parks From 2019 to 2026
August Best month
☀️🌙 Day & Night When it's spotted

About the Tersa Sphinx

Xylophanes tersa, the tersa sphinx, is a species of moth of the family Sphingidae. The species was first described by Carl Linnaeus in 1771. It is found from the United States (Massachusetts south to southern Florida, west to Nebraska, New Mexico and southern Arizona), through Mexico, the West Indies and Central America and into parts of South America (including Bolivia, Paraguay, Argentina and Brazil). An occasional stray can be found as far north as Canada.

The larvae feed on Borreria, Catalpa, Manettia, and Pentas species, and Spermacoce glabra, Hamelia patens, Hedyotis nigricans, Heimia salicifolia, Psychotria microdon, Psychotria nervosa, and Inga vera. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Jaragua National Park 🇩🇴 Dominican Republic
~30%
2 Main Ridge Forest Reserve 🇹🇹 Trinidad and Tobago
~10%
3 Everglades National Park 🇺🇸 United States
~10%
4 Big Cypress National Preserve 🇺🇸 United States
~10%
5 Braulio Carrillo National Park 🇨🇷 Costa Rica
~10%
6 Merritt Island National Wildlife Refuge 🇺🇸 United States
~10%
7 La Amistad International Park (Panama) 🇵🇦 Panama
~10%
8 Cumbres de Monterrey National Park 🇲🇽 Mexico
<5%

Cities Where Found

# City Country Daily sighting probability
1 São Luís 🇧🇷 Brazil
~20%
2 João Pessoa 🇧🇷 Brazil
~20%
3 Manaus 🇧🇷 Brazil
~10%
4 Fortaleza 🇧🇷 Brazil
~10%
5 Miami 🇺🇸 United States
~10%
6 Houston 🇺🇸 United States
~10%
7 Dallas 🇺🇸 United States
~10%
8 Orlando 🇺🇸 United States
~10%
9 Austin 🇺🇸 United States
<5%
10 Rio de Janeiro 🇧🇷 Brazil
<5%

Before you go

What are the chances of seeing a Tersa Sphinx in New York City?

Rare

Under 5% of wildlife watchers report a Tersa Sphinx sighting in New York City on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 710th most-seen of the 1623 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 Tersa Sphinx in New York City?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Tersa Sphinx in New York City on a given day, so our monthly data shows no clear season.

What time of day is best to see a Tersa Sphinx?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most Tersa Sphinx sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.

Is New York City the best place to see a Tersa Sphinx?

17th of 17

Of the 17 cities where we can rate Tersa Sphinx sightings, New York City ranks 17th at under 5%. The best odds are in São Luís (Brazil, about 20%), João Pessoa (Brazil, about 20%) and Manaus (Brazil, about 10%).

Where does the Tersa Sphinx sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Tersa Sphinx is recorded against all the insects logged in New York City (20 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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