The Black Witch Moth: Unraveling the Myths and Mysteries

The Black Witch Moth, scientifically known as Ascalapha odorata, is a fascinating creature in the world of Ledidoptery. Recognized for its large size and bat-like appearance. This nocturnal moth ranges from the southern United States to Brazil and is sometimes migratory into Canada and most states of the United States.

As the largest noctuoid in the continental United States, the Black Witch is of particular interest to those studying the noctuid moth family, which represents nearly 25% of moth diversity in North America.

The Black Witch Moth close up

The appearance of the Black Witch Moth is quite unique. Featuring dusty brown coloration and distinctive comma-shaped eye spots on its forewings. Females are typically larger and can be identified by a tan scalloped line across both the hind and forewings. These wing edges often give the moth a tattered look. Especially when found in northern states at the edge of their migration path after long journeys. The eyespots on the wings are also worth noting, as they tend to appear daunting in the dark night.

Their nocturnal behavior, large size, and intriguing markings have contributed to the moth’s mysterious reputation. Captivating the curiosity of scientists and nature enthusiasts alike.

Physical Characteristics

Size and Shape

The Black Witch Moth is a large moth species with a distinctive shape. The size of the moth varies, with males being somewhat smaller than females.

Both sexes are characterized by their long forewings. Which give them a unique appearance and can make them resemble bats while in flight.

Wings and Wingspan

The Black Witch Moth’s wings are one of its most notable features. The moth’s wingspan ranges from 12 cm in males to around 17 cm or larger in females. Making them one of the largest moths in their geographical range.

The moth’s wings have a characteristic eyespot near the front edge of each forewing. Which is thought to serve as a defense mechanism against predators by making the moth appear larger and more intimidating.

 a black witch moth

Color and Patterns

The color of the Black Witch Moth is primarily dark brown, with intricate patterns of stripes and spots spread across its wings. Males are often darker in color and lack the white bar that is commonly found crossing the wings of female moths. The moth’s forewings and hindwings are adorned with a wavy, dark brown line close to the bottom edges.

Additionally, an iridescent purple line, shaped like the letter ‘m’, can be found stamped at the bottom of each hindwing and part of the forewing.

The larval stage of the Black Witch Moth is a large caterpillar. Which can grow up to 7 cm in length, and consists of patterns of black and greenish-brown spots and stripes.

Habitat and Range

The Black Witch Moth is found primarily in the Americas – ranging from Central America to Mexico, the Caribbean, the United States, and even as far as Hawaii1.

Nocturnal Behavior

As a nocturnal species, the Black Witch Moth is active during night time hours2. This behavior helps it avoid predators such as birds, which are typically active during the day. Moreover, its bat-like appearance and flight pattern also aid in its evasion of predators.

Host Plants

The Black Witch Moth primarily feeds on woody legumes, such as Acacia, mesquite, and Kentucky coffee trees3. These plants serve as essential sources of nourishment for the larvae. The moth has a preference for these specific plants mainly due to their availability in its geographic range.


The Black Witch Moth is a migratory species, with some populations moving from south to north during the warmer months4. This migration pattern allows the moth to find suitable habitats and host plants throughout different regions and seasons. As its migration extends into Canada and most states of the United States, the Black Witch Moth is considered the largest noctuoid moth in the continental United States5.


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Diet and Predators

The Black Witch Moth is known for its unique dietary habits. Adult moths primarily feed on overripe fruit, particularly bananas, which can be commonly found in their rainforest habitats1. In addition to fruit, they also consume nectar and sap from a variety of plants to meet their nutritional needs.

The larvae of the Black Witch Moth have a slightly different diet, preferring to consume the leaves of plants. Most of their host plants are legumes, such as Acacia species, Kentucky coffeetree (Gymnocladus dioicus), and candle bush (Senna alata)1. They have also been observed attacking mesquite and ficus plants, sometimes becoming agricultural pests1.

black witch moth caterpillar

As for predators, Black Witch Moths face threats from various birds and bats. These nocturnal creatures are often mistaken for bats themselves due to their large size and strong aviating abilities2. The moth’s dark and mysterious appearance may also contribute to this confusion, making them a target for predators that prey on bats.

To summarize, the diet of the Black Witch Moth varies between its adult and larval stages, with the adults primarily consuming overripe fruit, nectar, and sap, while the larvae feed mostly on the leaves of legume plants. Their main predators include birds and bats, which are attracted to the moth’s large size and nocturnal habits.


  1. Ascalapha odorata – Wikipedia
  2. Black Witch Moths: A Night-Time Trick or Treat – Cool Green Science

Cultural and Folkloric Significance

Death and Misfortune

The Black Witch Moth (Ascalapha odorata) is often associated with death and misfortune in various cultures. In some regions, it is referred to as the “butterfly of death” or “mariposa de la muerte.” The moth’s ominous presence in folklore is likely due to its dark color and nocturnal habits.

In certain parts of Mexico and the Caribbean, seeing a black witch moth is considered a bad omen, and it is believed that the moth can bring sickness, death, or other misfortune to those who encounter it.

Good Luck and Wealth

Despite its association with death and misfortune, the black witch moth also carries positive connotations in some cultures.

In Hawaii, it is viewed as a symbol of good luck, and an embodiment of a lost soul returning to say goodbye.

The moth is also known as the “money moth” or “lottery moth” in other regions, where it is believed that having one land on you can bring good fortune, wealth, or even help you win the lottery.

Cultural History

The large geographic range of the black witch moth has contributed to its rich cultural history. Different cultures have developed unique interpretations of the moth’s significance based on local beliefs, stories, and language. In some languages, the moth’s common name reflects its association with either death and misfortune or good luck and wealth. The University of Colorado Boulder notes that these varied cultural perceptions of the black witch moth are likely influenced by the moth’s wide distribution throughout the Americas.


Moths have been part of folklore and mythology in various cultures for centuries. In many legends, moths are considered bringers of death or messengers between the living and the dead.

As one such previously mentioned example, the black witch moth in Hawaii represents a loved one’s soul returning to bid farewell.

In general, the predominantly negative portrayal of moths in folklore likely stems from their nocturnal habits and contrasts with the more positive and fairy-like imagery associated with butterflies.

Scientific Classification

As part of the scientific classification system, the Black Witch Moth is classified into several categories.

Starting with the kingdom Animalia, it further belongs to the phylum Arthropoda. The class Insecta is the next level in its classification, followed by the order Lepidoptera and the family Erebidae.

Finally, the moth is grouped under the genus Ascalapha, with its scientific name being Ascalapha odorata.

The Black Witch Moth is not only known for its large size but also its migratory behavior, as it can be found in Canada and most states of the United States. In the folklore of numerous cultures in Latin America and the Caribbean, the moth is often associated with death or misfortune.

In summary, the scientific classification of the Black Witch Moth (Ascalapha odorata) is as follows:

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Lepidoptera
  • Family: Erebidae
  • Genus: Ascalapha
  • Species: A. odorata

Notable Sightings and Media

The Black Witch Mothhas had numerous notable sightings across various regions, ranging from North America to Latin America.

In the United States, the moth has been spotted in places such as the lower Rio Grande Valley in Texas, and as far north as Canada during its migratory journeys between June and October, particularly correlating with tropical storm systems12.

In Florida, the Black Witch Moth has been known to make appearances as well, and there have been instances of sightings even farther afield in countries such as Jamaica, the Bahamas, Paraguay, and Brazil2. These nocturnal moths are capable of flying over open waters, allowing them to migrate to and from various Caribbean islands and even the Hawaiian islands3.

Notably following Hurricane Claudette in 2003, hundreds of Black Witches were found off the coast of Texas, where the eye of the storm had passed3. This highlights the moth’s ability to survive and travel in extreme weather conditions, resulting in rare sightings in distant locations.

Interestingly, the Black Witch Moth gained some media attention when it was featured in the movie “The Silence of the Lambs,” where its striking appearance and size added to the film’s eerie ambience.

For those interested in entomology, the Texas Ento website, maintained by Mike Quinn, offers a wealth of information and photos related to these fascinating insects. The images highlight their unique, bat-like morphology and their status as the largest noctuoid in the continental United States2.

Sighting and Media References

  1. Cool Green Science
  2. Wikipedia
  3. University of Colorado Boulder

Frequently Asked Questions

Are Black Witch Moths Harmful?

Black Witch Moths are not harmful to humans. They do not carry any diseases, and their larvae pose no significant threat to agricultural crops. In fact, they may help control certain plant species by consuming their leaves during the larval stage.

What is the lifespan of the Black Witch Moth?

The average lifespan of a Black Witch Moth is around 2-3 months, but this duration can vary depending on environmental factors and predation. Adult moths are mostly active during the night and spend their days resting in safe locations.

What do Black Witch Moth Caterpillars Eat?

The caterpillars, or larvae, of the Black Witch Moth primarily feed on legumes, acacia, mesquite, and Kentucky coffee. They prefer plants that are native to their habitat but can also adapt to consume other types of vegetation if necessary.

Tom Watson

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