How Long Do Hummingbird Moths Live?

With their swift flight and ability to hover and feed on flower nectar, hummingbird moths earn their name. These fascinating insects have short lifespans compared to other moths, but their lives are no less remarkable.

If you’re short on time, here’s a quick answer to your question: most hummingbird moths live only 1-2 weeks as adults.

In this comprehensive guide, we’ll cover the typical lifespan of popular hummingbird moth species. We’ll look at their life stages, factors impacting longevity, and how climate change may be altering lifecycles.

Typical Adult Lifespan by Species

Ruby-Throated Hummingbird Moth: 7-10 Days

The Ruby-Throated Hummingbird Moth, scientifically known as Hemaris thysbe, has a relatively short adult lifespan of 7-10 days. This species is commonly found in North America and is known for its vibrant colors and ability to hover in mid-air, mimicking the flight pattern of hummingbirds.

Despite their short lifespan, these moths play a crucial role in pollination, as they feed on nectar from various flowering plants.

White-Lined Sphinx Moth: 10-14 Days

The White-Lined Sphinx Moth, also known as Hyles lineata, has a slightly longer adult lifespan compared to the Ruby-Throated Hummingbird Moth. These moths typically live for about 10-14 days. They are known for their remarkable flying ability and fast flight speed, reaching up to 30 miles per hour.

The distinctive white lines on their wings give them their common name. During their short adult life, these moths play a crucial role in pollination, just like other moth species.

Nessus Sphinx Moth: 7-14 Days

The Nessus Sphinx Moth, scientifically known as Amphion floridensis, has a variable adult lifespan ranging from 7 to 14 days. This moth species is found in the southern United States and is known for its striking colors and unique wing patterns.

The adult moths are active during the nighttime and are often attracted to artificial lights. Despite their short lifespan, these moths contribute to the pollination of various plants in their native habitats.

It’s important to note that these lifespan ranges are general estimates and can vary depending on factors such as environmental conditions, availability of food sources, and predation. Researchers and entomologists continue to study the lifespans of different moth species to gain a better understanding of their life cycles and ecological roles.

Life Stages and Development

Eggs: 4-10 Days

The life cycle of a hummingbird moth begins with the laying of eggs. The female moth typically lays her eggs on the underside of leaves, usually near the flowers that the adult moth feeds on. These eggs are tiny, about the size of a grain of rice, and are usually laid in clusters.

The incubation period for the eggs is relatively short, ranging from 4 to 10 days. During this time, the eggs are vulnerable to predators and environmental factors.

Caterpillars: 10-30 Days

After the eggs hatch, the tiny caterpillars emerge. At this stage, the caterpillars are voracious eaters and feed on the leaves of plants. They go through several molts, shedding their exoskeletons as they grow larger.

The caterpillar stage of the hummingbird moth’s life cycle typically lasts between 10 to 30 days, depending on environmental conditions and food availability. During this time, the caterpillars can grow up to several inches in length.

Pupae: 7-20 Days

Once the caterpillar has reached its full size, it enters the pupal stage. The caterpillar spins a silk cocoon around itself, which serves as a protective casing. Inside the cocoon, the caterpillar undergoes a transformation, breaking down its body tissues and reorganizing them into the adult form.

The pupal stage can last anywhere from 7 to 20 days, again depending on environmental conditions. After this period, the fully developed adult hummingbird moth emerges from the cocoon.

It is important to note that the lifespan of the adult hummingbird moth is relatively short, usually ranging from a few weeks to a couple of months. During this time, the moth focuses on reproduction, mating, and pollination.

The exact lifespan can vary depending on factors such as habitat, climate, and availability of food sources.

Factors Impacting Adult Lifespan

The lifespan of hummingbird moths can vary depending on various factors. These factors include climate and weather conditions, predation, and the presence of diseases and parasites.

Climate and Weather

Climate and weather play a significant role in determining the adult lifespan of hummingbird moths. These insects are highly sensitive to temperature fluctuations and rely on warm weather for their survival.

In colder regions, where the temperatures drop below their tolerance level, the lifespan of these moths may be significantly shorter. On the other hand, in warmer climates with favorable conditions, they can live longer.

Extreme weather events, such as droughts or heavy rainfall, can also impact the lifespan of hummingbird moths. These events can affect their food sources, breeding patterns, and overall health. Consequently, their lifespan may be shortened if they are unable to find sufficient nectar-producing flowers or if their breeding habitats are disrupted.


Predation is another factor that can affect the adult lifespan of hummingbird moths. These moths have a number of natural predators, including birds, bats, and spiders. These predators can significantly reduce the population of hummingbird moths, especially during their vulnerable adult stage.

When facing predators, hummingbird moths rely on their agility and speed to escape. Their ability to hover and fly in different directions allows them to evade capture. However, not all moths are successful in avoiding predation, and their lifespan can be cut short as a result.

Disease and Parasites

Like many other insects, hummingbird moths are susceptible to various diseases and parasites. These can include bacterial infections, viral diseases, and parasitic infestations. Infected or infested moths may experience a decline in their overall health and reproductive abilities, ultimately shortening their lifespan.

One common parasite that affects hummingbird moths is the braconid wasp. Female wasps lay their eggs inside the moth’s body, and the larvae then feed on the moth’s internal tissues. This parasitic relationship can weaken the moth and lead to a shortened lifespan.

For more information on hummingbird moths and their lifespan, you can visit the National Geographic website.

Climate Change Consequences

Climate change has far-reaching consequences for many species, including the fascinating hummingbird moth. These moths, also known as hawk moths or sphinx moths, are known for their unique ability to hover and feed on nectar, much like hummingbirds.

Understanding the impact of climate change on their lifespan is crucial for preserving their populations and maintaining the delicate balance of ecosystems they inhabit.

Changing Weather Patterns

One of the primary consequences of climate change is the alteration of weather patterns. Rising temperatures, changes in precipitation, and extreme weather events can all have significant effects on the lifespan of hummingbird moths.

These moths are highly sensitive to temperature and rely on specific weather conditions to thrive. As the climate continues to warm, it can disrupt their natural life cycle, affecting their ability to reproduce and survive.

Shifting Ranges

Climate change can also lead to the shifting of ranges for many species, including hummingbird moths. As temperatures increase, moths may need to migrate to find more suitable habitats. This can result in changes to their feeding patterns and interactions with other species.

The loss of familiar habitats and the need to adapt to new environments can put additional stress on hummingbird moths, potentially impacting their longevity.

Mismatch With Flowers

Hummingbird moths rely on specific flowers for nectar, and their survival is closely linked to the availability of these food sources. However, climate change can disrupt the timing of flowering seasons, leading to a mismatch between the emergence of hummingbird moths and the blooming of their preferred flowers.

This mismatch can result in a decrease in food resources and ultimately impact the lifespan of these moths.


While short-lived, hummingbird moths live fast-paced, vital lives as pollinators. Their life cycles and longevity are intimately tied to climate and environment. Understanding their lifespan provides insights into preserving these important insects.

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