Rhombic Night Adder

Causus rhombeatus

Abstract

Rhombic Night Adder Causus rhombeatus has most recently been assessed for The IUCN Red List of Threatened Species in 2019. Causus rhombeatus is listed as Least Concern.

The Red List Assessment i

Alexander, G.J. & Tolley, K.A. 2021. Causus rhombeatus. The IUCN Red List of Threatened Species 2021: e.T13300985A13300990. Accessed on 12 February 2026.

Language

English

Last assessed

24 October 2019

Scope of assessment

Global

Population trend

Stable

Number of mature individuals

Habitat and ecology

Savanna, Grassland

Geographic range

  • Extant (resident)

University of Tel Aviv and IUCN (International Union for Conservation of Nature) 2018. Causus rhombeatus. The IUCN Red List of Threatened Species. Version 2025-2

Assessment Information

Global Assessment

IUCN Red List Category and Criteria - Global Assessment

Least Concern  

Date assessed

24 October 2019

Year published

2021

Assessment Information in detail

Geographic Range

Native

Extant (resident)

Angola; Botswana; Burundi; Cameroon; Central African Republic; Chad; Congo, The Democratic Republic of the; Eswatini; Ethiopia; Kenya; Malawi; Mozambique; Namibia; Nigeria; Rwanda; South Africa; South Sudan; Tanzania, United Republic of; Uganda; Zimbabwe

Possibly Extant (resident)

Sudan

Number of locations

Upper elevation limit

2,200 metres

Lower elevation limit

600 metres

Geographic Range in detail

Population

Current population trend

Stable

Number of mature individuals

Population severely fragmented

No

Continuing decline of mature individuals

Population in detail

Habitat and Ecology

System

Habitat type

Savanna, Grassland

Generation length (years)

Congregatory

Movement patterns

Continuing decline in area, extent and/or quality of habitat

Habitat and Ecology in detail

Threats

Threats in detail

Conservation Actions

In-place land/water protection

  • Occurs in at least one protected area : Yes
Conservation Actions in detail

Bibliography

Red List Bibliography

External Data

CITES Legislation from Species+

Data source

The information below is from the Species+ website.

CITES Legislation from Species+ in detail

Ex situ data from Species360

Data source

The information below is from Species360's Zoological Information Management System (ZIMS)

Ex situ data from Species360 in detail

Studies and Actions from Conservation Evidence

Data source

The information below is from the Conservation Evidence website.

Studies and Actions from Conservation Evidence in detail