Reptilia · Squamata
Acontias gracilicaudaEssex, 1925
Slendertail Lance Skink
Photograph placed in the public domain, CC0, via iNaturalist
A burrowing, active by day or night, meat-eating skink from the Afrotropic region, reaching 260 mm snout to vent.
Also called Thin-tailed Legless Skink.
Reptilia › Squamata › Scincidae › Acontias
- Grows to
- 260mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Cathemeral
- Lives
- Fossorial
Longer than 99% of all skinks 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 24 to 500 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
31 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
- 2021
- Population trend
- Stable
The animal itself
- Limbs
- None
- Venomous
- No
- Fangs
- None
Size
- Length snout to vent · greatest recorded
- 260mm10 in
- Length snout to vent · adult female mean
- 178.9mm7 in
- Largest female · snout to vent
- 178.9mm7 in
- Body mass · greatestcomputed
- 19.38g0.68 oz
- Body mass at hatchingmeasured
- 1.1g0.04 oz
max 260 mm SVL (Feldman et al. 2016)
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
- Carnivorous
- Active
- Cathemeral
- Where it lives
- Fossorial
- Habitat
- Grassland, Savanna, Shrubland
- Biome
- Montane Grasslands & Savannas
- Region
- Afrotropic
- Mainland or island
- Mainland
- Highest it lives · above sea level
- 2300m
- Range size
- 314,480km²
Invertebrates see Sources (general) column
Rabiega 2014
Maritz and Alexander 2009
IUCN (0 to 2300)
Breeding
- Reproduction
- Viviparous
- Average clutch
- 2eggs
- Eggs or young per clutch
- 2eggs
Naming and history
- Suborder
- Sauria
- Infraorder
- Scincoidea
- Subspecies
- No
- Described by
- Essex
- Moved to another genus · since it was first described
- No
- Described in
- 1925
- Type locality
- South Africa
Keeping one
3 ft 5 in × 3 ft 5 in × 2 ft 2 in(104 × 104 × 65 cm)
Minimum length × width × height, for one animal. Bigger is always better. Substrate at least 5 in (13 cm) deep.
The standard sizes ground-dwelling species at 4 × 4 × 2.5 times snout-vent length.
Burrows, so substrate deep enough to dig in matters as much as floor area.
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 10 in (260 mm), at 4 × 4 × 2.5 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Slendertail Lance Skink. Rather than repeat a number from a care sheet, this page leaves it out.
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.
3kJ per day
Worked out for an animal of 19 g, the heaviest recorded for Slendertail Lance Skink — 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 · snout to vent
- — Hatchling length · nose to tail
- — Largest juvenile · snout to vent
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Body mass · adult female, mean
- — Longest recorded life
- — Preferred body temperature · chosen in a laboratory gradient
- — Body temperature when active · measured in the wild
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How it hunts
- — How the young develop
- — Gestation or incubation
- — Mean clutch · smallest reported
- — Mean clutch · largest reported
- — Clutches in a year
- — Clutches a year · fewest
- — Clutches a year · most
- — First breeds from · youngest recorded
- — First breeds by · oldest recorded
- — 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
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Colour on the back
- — Pattern on the back
- — Pupil
- — Sex decided by
- — Red List criteria
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
- — Lowest it lives · above sea level
Others in Scincidae
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). Acontias gracilicauda. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/acontias-gracilicauda
@misc{acontias_gracilicauda_2026,
title = {Acontias gracilicauda},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/acontias-gracilicauda}
}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.