Tersa Sphinx

Tersa Sphinx

Xylophanes tersa

Daily sighting probability ~20% · Possible
at João Pessoa

In 3 days ~40% in a week ~70%

7 Verified sightings at João Pessoa
107 In all 8 parks From 2019 to 2026
May 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 João Pessoa?

Possible

About 20% of wildlife watchers report a Tersa Sphinx sighting in João Pessoa on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 30th most-seen of the 56 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

When is the best time to see a Tersa Sphinx in João Pessoa?

May

In that month about 40% of wildlife watchers report a Tersa Sphinx in João Pessoa on a given day, against under 5% in June to February, the lowest months. That is one of João Pessoa's wettest months, with about 170 mm of rain against 20 mm in November.

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 João Pessoa the best place to see a Tersa Sphinx?

Among the best

Of the 17 cities where we can rate Tersa Sphinx sightings, João Pessoa ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in São Luís (Brazil, about 20%).

Which relatives of the Tersa Sphinx live in João Pessoa?

Same family: Sphingidae

The closest relatives of the Tersa Sphinx that you can see in João Pessoa (family Sphingidae, Sphinx Moths) are Streaked Sphinx (about 30%), Tetrio Sphinx (about 20%) and Swift-Winged Sphinx (about 20%), with each one's daily chance of a sighting.

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 João Pessoa (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.

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