Apis cerana worker foraging.
Peterwchen, CC BY-SA 4.0, via Wikimedia Commons

Apis cerana Fabricius, 1793, the eastern honeybee, is the principal domesticated honeybee of Asia and the sister species of Apis mellifera. Native to a range spanning Afghanistan to Japan and from the Himalayas south to Indonesia, it has been kept for honey production and pollination across Asia for thousands of years. Smaller than its western counterpart, forming more modest colonies of 6,000 to 10,000 workers, and markedly more prone to swarming and absconding, A. cerana is nevertheless a critical ecological and agricultural pollinator across the continent. It is also the original host of the Varroa mite. Unlike A. mellifera, it has evolved effective behavioural defences against it. Explore other honeybee species in the World Bee Atlas.

Taxonomy and Classification

Johann Christian Fabricius described Apis cerana in 1793 in Entomologia Systematica, page 327, under its current name. The species was previously placed in synonymy with Apis mellifera by some authors, but molecular and morphometric studies have firmly established it as a distinct species. Mating experiments confirm the two are reproductively isolated: crosses between A. cerana and A. mellifera do not produce viable offspring.^[1]

The subspecies taxonomy of A. cerana has been extensively debated. Engel (1999) recognised eight subspecies: A. c. cerana (Chinese honeybee), A. c. indica (Indian honeybee), A. c. japonica (Japanese honeybee), A. c. javana (Javan honeybee), A. c. himalaya, A. c. abaensis, A. c. nuluensis, and A. c. phillipina.^[2] However, a 2010 multivariate morphometric revision by Radloff et al. in Apidologie found that morphoclusters did not align cleanly with these traditional subspecies boundaries and proposed six geographically defined groupings instead: Northern cerana, Himalayan cerana, Indian plains cerana, Indochinese cerana, Philippine cerana, and Indo-Malayan cerana.^[3] The taxonomic question remains open; published sources continue to cite figures ranging from 6 to 8 subspecies.

A. cerana is the sister species of Apis koschevnikovi and sits within the subgenus Apis alongside A. mellifera. The two cavity-nesting, multi-comb domesticated Apis species (A. cerana and A. mellifera) are the only honeybees managed at scale for honey production globally.

Physical Description

Workers of Apis cerana are visually similar to A. mellifera workers but distinctly smaller, measuring 9 to 12 mm in body length with a forewing length of 7 to 9 mm.^[4] The body is predominantly black with alternating pale yellow to amber abdominal bands, and the legs have a characteristic rusty coloration. Coloration is highly variable across subspecies: A. c. cerana workers are brownish-yellow with a narrow black band on the second abdominal segment; A. c. indica workers tend to be darker. Queens measure 13 to 16 mm and may be either dark brown with pronounced yellow abdominal rings, or nearly entirely black, with both colour forms occurring within the same subspecies. Drones are 11 to 14 mm, generally dark with broader yellow banding than workers.

The comb cell size of A. cerana is smaller than that of A. mellifera, a structural difference that has consequences for Varroa mite reproduction (see Conservation and Disease section). The nest architecture (multiple parallel vertical combs built inside a cavity) is functionally identical to A. mellifera, which is why both species can be managed in similar hive types.

Distribution and Habitat

Apis cerana has the widest natural range of all Asian honeybee species, extending from Afghanistan and Pakistan in the west to Japan and the Korean Peninsula in the northeast, and south through mainland Southeast Asia to Indonesia and the Philippines.^[5] It occupies a remarkable breadth of climate zones: tropical rainforest, tropical savannah, monsoon forest, deciduous woodland, mid-latitude grassland, moist continental forest, and taiga. In the Himalayas, populations exist at elevations up to 3,500 metres.

Unlike A. mellifera, which has been introduced globally through human commerce, A. cerana has been introduced to only a limited number of areas outside its native range. It was introduced to Papua New Guinea, the Solomon Islands, and most notably Australia, where it arrived in Townsville in 2007 and became the subject of a major eradication programme by the Australian government, concerned about its potential impact on native bee communities and commercial honeybee operations.

Behaviour and Life Cycle

Colony structure and annual cycle

Apis cerana colonies are eusocial, perennial in warm regions, and annual in temperate zones. Colony size is substantially smaller than A. mellifera: typical managed colonies contain 6,000 to 10,000 workers, compared to 20,000 to 80,000 in a productive A. mellifera colony. In cold temperate regions such as northern China, Japan, and the Himalayas, colonies form a winter cluster and maintain brood temperatures of 33 to 35.5°C through metabolic heat generation, even when ambient temperature drops to 12°C.^[1]

Swarming and absconding

A. cerana is substantially more prone to both swarming and absconding than A. mellifera. Swarming (reproductive division of the colony) occurs several times per year in tropical populations. Absconding is the complete abandonment of the nest, with the entire colony departing to found a new nest elsewhere; it is triggered by resource scarcity, disease pressure, or persistent disturbance. Absconding is an energetically costly strategy but functions as a key disease-management behaviour: when a colony absconds, it leaves behind pathogens and parasites accumulated in the old combs. This behaviour is one of several mechanisms that allow A. cerana to coexist with Varroa mites without catastrophic colony losses.^[6]

The absconding tendency is a significant practical challenge for beekeepers. A. cerana colonies kept in managed hives will readily depart if conditions become unfavourable, and traditional beekeeping in Asia has developed techniques over centuries to minimise this behaviour. The greater management demands of A. cerana are the primary reason commercial beekeeping operations across Asia have increasingly switched to A. mellifera, with documented negative consequences for wild A. cerana populations through competitive displacement and disease exchange.

The hot defensive bee ball

One of the most scientifically remarkable behaviours in the entire Apis genus is the hot defensive bee ball, documented principally in A. c. japonica (the Japanese honeybee) but present in other A. cerana populations. When a scout hornet (typically Vespa mandarinia, the Asian giant hornet) enters or approaches the colony, workers rapidly envelop the intruder in a tightly packed sphere of several hundred bees. The bees then vibrate their indirect flight muscles in coordinated fashion, generating heat within the ball. Core temperature reaches 46 to 47°C, held for 20 to 30 minutes: lethal to the hornet, which dies at 44 to 46°C, while the bees themselves can tolerate 50°C briefly.^[7] Carbon dioxide concentration inside the ball also rises, contributing to hornet mortality. Apis mellifera lacks this defence and is defenceless against mass hornet attack, a significant problem in areas where it has been introduced alongside Asian hornet species.

Varroa Resistance: Why Apis cerana Survives the Mite That Destroys Apis mellifera

Varroa destructor and Varroa jacobsoni are ectoparasitic mites that reproduce inside honeybee brood cells. They are the single greatest cause of managed honeybee colony losses globally, but their devastation falls almost exclusively on Apis mellifera. Apis cerana, the mites' original host, coexists with them in relative equilibrium. Understanding why is one of the most practically important questions in apicultural research.

Three interlocking defence mechanisms

A. cerana has evolved three behavioural strategies that together limit Varroa population growth within the colony:

Grooming behaviour. Workers actively groom themselves and each other, using their mandibles and legs to locate, grip, and physically damage or remove mites from the body surface. A 1996 study by Fries et al. found that over a 6-hour period, 29.6% of introduced mites were damaged by A. cerana compared to 12.3% by A. mellifera.^[8] A 2024 gene expression study using RNA sequencing confirmed that A. cerana exhibits significantly higher auto-grooming frequency than A. mellifera when infested, and identified differentially expressed genes in grooming-behaviour neural pathways.^[9]

Hygienic behaviour. Workers detect, uncap, and remove mite-infested brood cells before the mites complete their reproductive cycle. A. cerana performs this behaviour more effectively and more rapidly than A. mellifera. The smaller cell size of A. cerana comb is thought to assist detection by reducing the space available for mites to hide.^[6]

Drone brood entombing. When Varroa mites preferentially infest drone brood cells (which they do, because the longer capping period allows more mite reproduction), A. cerana workers entomb the infested drone brood by sealing the cells with wax plugs, preventing adult mites from dispersing into the colony. This targeted response is largely absent in A. mellifera.

Honey Production and Beekeeping

Apis cerana has been kept for honey production across Asia for at least 2,000 years, with evidence of managed hives in China, India, and the Middle East predating formal historical records. It is estimated that several million A. cerana colonies are managed across Asia today, though precise figures are unavailable because many are kept in traditional log or clay hives by subsistence beekeepers not captured in agricultural statistics.

Honey yields from A. cerana are substantially lower than A. mellifera: typical yields range from 5 to 12 kg per colony per year under natural conditions and 15 to 25 kg under intensive farm management, compared to 20 to 60 kg for A. mellifera in good conditions.^[11] The lower yield reflects the smaller colony size, greater swarming frequency, and the species' tendency to consume honey stores during periods of dearth rather than hoarding large surpluses as A. mellifera does.

A. cerana honey commands a significant premium in many Asian markets. In China, wild-harvested or traditionally managed A. c. cerana honey sells at multiples of commercial A. mellifera honey prices. In Nepal and Bhutan, high-altitude A. cerana cerana honey from rhododendron-rich valleys is increasingly sought by speciality buyers. The honey is typically darker, more intensely flavoured, and has a different enzymatic and pollen profile from A. mellifera honey from the same region.

Despite this cultural and economic importance, A. cerana faces increasing pressure from the commercial expansion of A. mellifera beekeeping across Asia. The introduction of A. mellifera has been linked to local declines and in some areas local extinction of A. cerana through competitive displacement and disease exchange, including the introduction of Varroa destructor to A. mellifera populations and the reverse transmission of pathogens such as sacbrood virus from A. cerana to A. mellifera.^[6]

Apis cerana vs Apis mellifera: Key Differences

Although closely related and superficially similar, the two domesticated honeybee species differ substantially across almost every biologically significant parameter. The table below summarises the key comparisons.

Conservation Status and Population Trends

Apis cerana has not been assessed by the IUCN Red List at the global species level. Regional and anecdotal data, however, consistently indicate population declines across its native range. A 2022 study in Nepal documented a 44% decline in occupied beehives and 50% decline in honey production per hive from 2012 to 2022, driven by climate change, flower loss, and the spread of A. mellifera beekeeping.^[12] Across South and Southeast Asia, beekeepers and researchers have reported substantial declines driven by habitat loss, pesticide use, and competitive displacement by commercial A. mellifera operations.

The species is also threatened by disease exchange with A. mellifera. Sacbrood virus, a pathogen to which A. cerana is particularly vulnerable, has caused significant colony losses in India, China, and Southeast Asia. Unlike in A. mellifera, sacbrood virus infections in A. cerana can be colony-lethal rather than merely symptomatic.

Apis cerana and HoneyBee & Co.

All HoneyBee & Co. honey is produced by Apis mellifera colonies. Apis cerana is not managed commercially in Romania or the United Kingdom, and no A. cerana honey appears in our range. The eastern honeybee is included in this species programme because understanding the full genus Apis (the biology, the differences, the conservation challenges) is part of what informs how we think about the honeybees that produce our honey, the landscapes those bees depend on, and the threats to bee populations globally.

What A. cerana illustrates most powerfully for anyone interested in honey is that Varroa resistance is possible: it exists, fully evolved, in a honeybee. The challenge is not biological but historical: A. mellifera never encountered the mite before the 20th century and had no time to adapt. The research into A. cerana's grooming and hygienic behaviour mechanisms is now feeding directly into selective breeding programmes for A. mellifera colonies that can resist Varroa without chemical treatment. Understanding A. cerana is, in a real sense, part of the future of the A. mellifera colonies that produce our honey.

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For a broader look at what bee species exist across the globe and how their distribution relates to the landscapes that produce different honeys, visit our World Bee Atlas. To understand what disappearing bee populations would mean for the food on your plate, explore Your Plate Without Bees. For the A. mellifera colonies that produce all our honey, see the Western Honeybee species profile.