Reptilia · Squamata
Monopeltis sphenorhynchusPeters, 1879
Slender Spade-snouted Worm Lizard
Photograph placed in the public domain, CC0, via iNaturalist
A burrowing, active by day or night, meat-eating lizard from the Afrotropic region, reaching 365 mm snout to vent.
Reptilia › Squamata › Amphisbaenidae › Monopeltis
- Grows to
- 365mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Cathemeral
- Lives
- Fossorial
Longer than 84% of all species in Amphisbaenidae 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 107 to 810 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
28 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
- 2019
- Population trend
- Stable
The animal itself
- Limbs
- None
- Venomous
- No
- Fangs
- None
Size
- Length snout to vent · greatest recorded
- 365mm14.5 in
- Hatchling length · snout to vent
- 83.3mm3.25 in
- Largest juvenile · snout to vent
- 105mm4.25 in
- Body mass · greatestcomputed
- 47.82g1.7 oz
max 365 mm SVL (Feldman et al. 2016)
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- How it hunts
- Active foraging
- Active
- Cathemeral
- Where it lives
- Fossorial
- Habitat
- Savanna
- Biome
- Tropical & Subtropical Grasslands, Savannas & Shrublands
- Region
- Afrotropic
- Mainland or island
- Mainland
- Range size
- 1,078,147km²
arthropods (van Huyssteen 2023)
van Huyssteen 2023
Maritz and Alexander 2009, Pietersen and Haacke 2013, van Huyssteen 2023
Breeding
- Reproduction
- Viviparous
Naming and history
- Suborder
- Amphisbaenia
- Infraorder
- Amphisbaenia (Laterata)
- Subspecies
- Monopeltis sphenorhynchus sphenorhynchus PETERS 1879 Monopeltis sphenorhynchus mauricei PARKER 1935
- Described by
- Peters
- Moved to another genus · since it was first described
- Yes
- Described in
- 1879
- Type locality
- Mozambique
Keeping one
4 ft 9 in × 4 ft 9 in × 3 ft(146 × 146 × 91 cm)
Minimum length × width × height, for one animal. Bigger is always better. Substrate at least 7.25 in (18 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 14.5 in (365 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 Slender Spade-snouted Worm Lizard. 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.
6kJ per day
Worked out for an animal of 48 g, the heaviest recorded for Slender Spade-snouted Worm 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 female mean
- — 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 female · snout to vent
- — 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
- — Body mass at hatching
- — 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 the young develop
- — Gestation or incubation
- — Average clutch
- — Smallest clutch recorded
- — Largest clutch recorded
- — 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
- — Highest it lives · above sea level
Others in Amphisbaenidae
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). Monopeltis sphenorhynchus. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/monopeltis-sphenorhynchus
@misc{monopeltis_sphenorhynchus_2026,
title = {Monopeltis sphenorhynchus},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/monopeltis-sphenorhynchus}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Catalogue of Life (dataset 3LR), used under CC BY.
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.