Aspidoscelis sexlineatus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~60% in a week ~90%
The six-lined racerunner (Aspidoscelis sexlineatus) is a species of lizard native to the United States and Mexico. The six-lined racerunner is found throughout much of the southeastern and south-central portion of the United States, from Maryland to Florida in the east, across the Great Plains to South Texas and northern Mexico. In a study conducted on A. sexlineata in Mexico, the majority of the individuals found were inhabiting areas near the seashore that were formed and influenced from maritime climate and hurricanes. The species' range also reaches north to Wisconsin and Minnesota. A small disjunct population is found in Tuscola County, Michigan.
The six-lined racerunner is typically dark green, brown, or black in color, with six yellow or green-yellow stripes that extend down the body from head to tail. Between the stripes are dark-colored fields ranging from dark brown to black and pale-colored fields near ventral scales on each side. A distinct lemon-yellow coloration is on the sides of the head both above and below the lateral stripe. Also, white mental and gular stripes occur. The posterior gular fold is bordered by enlarged mesoptychial... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Padre Island National Seashore | 🇺🇸 United States | |
| 2 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States |
No species of the same family or order lives in Padre Island National Seashore, so these are its closest relatives here: other reptiles.
Possible
About 20% of wildlife watchers report a Six-lined Racerunner sighting in Padre Island National Seashore on a given day, based on 71 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 15 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Six-lined Racerunner in Padre Island National Seashore on a given day, against under 5% in November to March, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Six-lined Racerunner 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 Six-lined Racerunner sightings, Padre Island National Seashore has the highest daily chance: about 20%. Next come Merritt Island National Wildlife Refuge (United States, about 10%) and Great Smoky Mountains National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Six-lined Racerunner is recorded against all the reptiles logged in Padre Island National Seashore (71 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.
