Reptilia · Squamata
Sceloporus aeneusWiegmann, 1828
Southern Bunchgrass Lizard
Photograph by Andrea Caballero, CC BY-SA, via iNaturalist
A ground-dwelling, day-active, omnivorous lizard from the Neotropic region, reaching 63 mm snout to vent.
Also called Black-bellied Bunchgrass Lizard.
Reptilia › Squamata › Phrynosomatidae › Sceloporus
- Grows to
- 62.8mm
- greatest recorded
- Eats
- Omnivorous
- Active
- Diurnal
- Lives
- Terrestrial
Longer than only 17% of all species in Phrynosomatidae anyone has measured.
The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 47 to 175 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.
What is known
40 sourced facts, each taken from a named scientific dataset. How to read these.
Cited from a dataset unless a row is marked otherwise.
Standing in the world
- Still living
- Extant
- Conservation status
- Least Concern
- Status assessed · the year the Red List last looked
- 2007
- Population trend
- Stable
The animal itself
- Limbs
- Four legs
- Venomous
- No
- Fangs
- None
- Preferred body temperature · chosen in a laboratory gradientmeasured
- 34.4–35.5°C94–96 °F
- Body temperature when active · measured in the wild
- 31.4°C89 °F
- Body temp in the wild · mean, when active
- 28.3–34.5°C83–94 °F
mean body temperature of active individuals in nature
body temperature of active animals in nature
Size
- Length snout to vent · greatest recorded
- 62.8mm2.5 in
- Length snout to vent · adult female mean
- 48.7mm2 in
- Largest female · snout to vent
- 48.7mm2 in
- Hatchling length · snout to vent
- 21.5mm0.8 in
- Largest juvenile · snout to vent
- 23mm0.9 in
- Body mass · greatestcomputed
- 9.08g0.32 oz
- Body mass at hatchingmeasured
- 0.21g0.01 oz
Shai Meiri, unpublished
snout-vent length; the source column mixes this with straight carapace length
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Omnivorous
- Active
- Diurnal
- Where it lives
- Terrestrial
- Habitat
- Forest, Grassland, Rocky
- Biome
- Tropical & Subtropical Coniferous Forests
- Region
- Neotropic
- Mainland or island
- Mainland
- Elevation · above sea level
- 1600–3900m
- Range size
- 52,636km²
(42% unidentified plant and insect parts - Dixon and Lemos-Espinal 2010, Heimes 2022)/insects (Ramirez-Bautista et al. 2014)/ 90% arthropods, 10% plants (Cruz-Elizalde et al. 2020), insects, plants and small lizards (Heimes 2022)
e.g., Ramirez-Bautista et al. 2016b, Lara-Resendiz et al. 2014
(e.g., Andrews et al. 1999, Lemos-Espinal et al. 2002, Ramirez-Bautista et al. 2016, Ramirez-Bautista et al. 2016b, Lara-Resendiz et al. 2014, Heimes 2022)/ arboreal and saxicolous (Davis and Smith 1953)/saxicolous (Leyte-Manrique et al. 2019)
2500-2950 (Ramirez-Bautista et al. 2016), 1600-3600 (Ramirez-Bautista et al. 2016b: herpetologica), Ramirez-Bautista et al. 2014 (1850-3900), 1850-3900 (Heimes 2022)
Breeding
- Reproduction
- Oviparous
- Sex decided by
- Genes, XX/XY
- Average clutch
- 6.66eggs
- Eggs or young per clutch
- 2–12eggs
- Mean clutch
- 3.9–8.1eggs
- Clutches a year
- 1–2per year
- First breeds at
- 15.25months
4-9, see Dixon and Lemos-Espinal 2010, 2-10, mean 6.4 (Ramirez-Bautista et al. 2016), Ramirez-Bautista et al. 2016b (2-10, means 6.2-7.5), 7-12, mean 7.3 (Jimenez‐Arcos et al. 2017), 2-12, means 6.4-8.1 (Ramirez-Bautista et al. 2018), Lopez-Alcaide et al. 2020 (3.9 citing Rodriguez-Romero et al. 2002), Heimes 2022 (2-10, means 5.57-7.36), Dominguez-Guerrero et al. 2022 (mean 6.74),
Naming and history
- Suborder
- Sauria
- Infraorder
- Pleurodonta
- Subspecies
- No
- Described by
- Wiegmann
- Moved to another genus · since it was first described
- No
- Described in
- 1828
- Type locality
- Mexico
Keeping one
10 in × 10 in × 6.25 in(25 × 25 × 16 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes ground-dwelling species at 4 × 4 × 2.5 times snout-vent length.
Mindestanforderungen an die Haltung von Reptilien (Sachverständigengutachten), German Federal Ministry for Nutrition, Agriculture and Forestry, Animal Welfare Division, 10 January 1997. The standard states these floor areas are recommendations rather than binding limits.
From this animal’s own snout-vent length of 2.5 in (62.8 mm), at 4 × 4 × 2.5 times it, following the German federal welfare standard — how this is worked out.
In a laboratory thermal gradient this species settled at 94–96 °F (34.4–35.5 °C).
Preferred body temperature, recorded in a laboratory gradient where the animal could choose freely. A measurement of the animal, not a setting for a thermostat.
Feeding
A prey item should be no wider than the space between the animal's eyes.
Widely used across reptile husbandry references. The stated reason is that the gap approximates the width of the throat, so wider prey is associated with impaction. This is established practice, not a measurement.
1kJ per day
Worked out for an animal of 9 g, the heaviest recorded for Southern Bunchgrass Lizard — so it is the top of the range, not a figure for a particular animal. Weigh yours and the number will be lower.
An upper estimate, not a feeding target, and not veterinary advice. The equation covers only what an animal burns staying alive, so a growing, gravid or recovering animal needs more — and it was measured on wild animals, which move far more than one in an enclosure. Body condition and a vet who knows the species are what a feeding decision should rest on. Where this comes from.
What nobody knows
These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.
- — Length snout to vent · adult male mean
- — Length snout to vent · adult mean
- — Length nose to tail · greatest recorded
- — Female length · mean, nose to tail
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Hatchling length · nose to tail
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Body mass · adult female, mean
- — Longest recorded life
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How it hunts
- — How the young develop
- — Gestation or incubation
- — Clutches in a year
- — Hatchling length · smallest recorded
- — Hatchling length · largest recorded
- — Age at first breeding · female
- — Mature from · youngest recorded
- — Mature by · oldest recorded
- — Size at maturity · smallest recorded
- — Size at maturity · largest recorded
- — Colour on the back
- — Pattern on the back
- — Pupil
- — Red List criteria
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
Others in Phrynosomatidae
Take this data
Everything on this page is available as data under CC BY 4.0 — use it freely, credit it, no permission needed.
This species as JSON · the whole dataset
Cite this page
The Reptile & Amphibian Encyclopedia (2026). Sceloporus aeneus. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/sceloporus-aeneus
@misc{sceloporus_aeneus_2026,
title = {Sceloporus aeneus},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/sceloporus-aeneus}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.
- Catalogue of Life (dataset 3LR), used under CC BY.