How many butterfly species are found in Uganda?

Uganda is estimated to harbour approximately 1,200 species of day-flying butterflies — an extraordinary figure for a country of only 241,000 km². This makes it one of the most species-dense butterfly countries in Africa, rivalled only by the Democratic Republic of Congo and Cameroon. The richness is primarily due to Uganda's position straddling the Albertine Rift — the mountain chain running along its western border — which acted as a refugium throughout climate fluctuations of the Pleistocene, preserving ancient forest communities of great botanical and faunal diversity. The Bwindi Impenetrable Forest alone has recorded over 400 butterfly species.

What is the largest butterfly in Africa?

The African giant swallowtail (Papilio antimachus) is the largest butterfly on the African continent, with a wingspan reaching 230–250 mm in large males. It is essentially a Ugandan and Congolese rainforest species — the core of its range lies in the forests of southwestern Uganda (Bwindi, Kibale) and adjacent DRC. Despite its size it can be difficult to observe because it spends much of its time in the upper forest canopy, gliding along ridgetops and descending only rarely to ground level. It is toxic and distasteful to predators, advertising this with its bold orange and black wing pattern — one of the most striking sights in African entomology.

When and where should I go to see Uganda's butterflies?

Uganda's butterfly season is longest at low elevations, where some species fly year-round. The two dry seasons — December to February and June to August — generally offer the best conditions for observation: less rain, clearer skies, and peak activity at forest edges and clearings. Bwindi Impenetrable National Park (southwestern Uganda) and Kibale Forest National Park (mid-west) are the premier sites for forest species, including the giant swallowtail. The Budongo Forest near Murchison Falls is more accessible and holds a different but overlapping forest fauna. Queen Elizabeth National Park and the Rwenzori Mountains add montane and savanna species for a complete picture of Uganda's diversity.

Butterfly Atlas

Butterflies of Uganda

~2 min

Uganda records around 1,200 butterfly species — one of Africa's highest densities, home to species found nowhere else, including the world's largest.

Overview

Uganda is landlocked in East Africa, straddling the equator between the Eastern and Western Rift Valleys. To the west, the Albertine Rift — the chain of mountains and lakes that forms the border with the Democratic Republic of Congo — concentrates some of the most ancient and diverse forest habitats in the continent. To the east, savanna and acacia woodland extend toward the shores of Lake Victoria and the drier plains.

This combination of habitats, compressed into a country the size of the United Kingdom, produces a butterfly fauna of approximately 1,200 species — a density of diversity matched by almost nowhere else on Earth at this latitude. Uganda is recognised by the World Wildlife Fund as the most biodiverse country per unit area in Africa.

The Albertine Rift — Africa's butterfly heartland

The mountains along Uganda's western border — the Rwenzori, the Virunga volcanoes, and the escarpments above Lakes Edward, George, and Albert — form part of the Albertine Rift biodiversity hotspot, one of 36 global hotspots identified as irreplaceable for conservation.

The forests here survived the climatic oscillations of the Pleistocene as refugia when much of the surrounding landscape dried out. Species isolated in these refugia evolved in place over millions of years; the result is high endemism — at every taxonomic level, from subspecies to full species, the Albertine Rift has more unique forms than any other part of Africa.

Bwindi Impenetrable Forest

Bwindi, famous for its mountain gorillas, is Uganda's premier butterfly site. The forest is ancient, unlogged, and extraordinarily rich:

African giant swallowtail (Papilio antimachus) — males patrolling high ridges; occasionally gliding down to muddy stream banks
Mocker swallowtail (Papilio dardanus) — common at forest edges, females mimicking various distasteful species
African blue tiger (Tirumala petiverana) — forest clearings and rides
Multiple Charaxes species — Uganda holds over 60 of Africa's ~190 Charaxes, many concentrated in Bwindi

The higher elevations of Bwindi (up to 2,607 m) add montane forest species shared with the Virunga chain.

Kibale Forest National Park

Kibale's mid-altitude moist forest (1,110–1,590 m) holds an exceptionally accessible and well-studied butterfly community:

African monarch (Danaus chrysippus) — forest margins and clearings
Cymothoe species — bright red and orange nymphalids of the forest interior
Forest queen (Euhaploea core) — dark forest glades
Numerous small Lycaenidae endemic or near-endemic to the Albertine Rift

Rwenzori Mountains

The "Mountains of the Moon" rise to 5,109 m (Margherita Peak) and support a complete montane sequence from lowland forest to afroalpine tundra:

Below 2,000 m: lowland forest species shared with Kibale and Bwindi
2,000–3,000 m: Afromontane forest with several endemic Papilio and Charaxes
Above 3,000 m: heather and giant groundsel zone with specialised small lycaenids and skippers

Beyond the Rift — savanna and lake shore

Uganda's eastern and northern regions, dominated by savanna, acacia woodland, and the extensive wetlands around Lake Victoria, hold a different but complementary fauna:

African map butterfly (Cyrestis camillus) — riverine forest edges
Citrus swallowtail (Papilio demodocus) — ubiquitous in gardens and orchards
Wanderer (Pareronia tritaea) — migratory pierid of open savanna
African clouded yellow (Colias electo) — dry grassland

The Budongo Forest Reserve, northeast of Murchison Falls, is the most accessible large forest site in northern Uganda and provides a productive introduction to Ugandan forest butterflies.

Seasonality

Period	Conditions and highlights
December–February	Dry season: peak activity at forest edges; giant swallowtail visible
March–May	Long rains: reduced activity but good for forest-interior species
June–August	Second dry season: another peak period; Rwenzori montane species
September–November	Short rains: lower activity; some migratory species arrive

Conservation

Uganda's forests face pressure from an expanding agricultural frontier, charcoal production, and the demands of one of Africa's fastest-growing populations. Bwindi and Kibale are both national parks with strong protection and well-established tourist infrastructure (primarily for gorilla and chimpanzee tracking), which provides economic incentives for forest conservation. The Albertine Rift Conservation Programme coordinates research and protection across the national borders with DRC, Rwanda, and Burundi.

The main threat to butterfly diversity outside protected areas is the loss of forest-edge and riverine forest habitat to small-scale agriculture. Several endemic Albertine Rift species — particularly the smaller lycaenids and skippers — are known from only a handful of forest patches and are acutely vulnerable to habitat reduction.