In Greek mythology, Callisto’s family tree is relatively small but significant: she is the daughter of Lycaon, king of Arcadia, and the mother of Arcas, fathered by Zeus. Her story is central to the myth of the constellations Ursa Major (the Great Bear) and Ursa Minor (the Little Bear), and it explains the origin of the Arcadian people.
Who Was Callisto?
Callisto was a nymph or princess of Arcadia, a region in the central Peloponnese of Greece. She was one of the companions of Artemis, the goddess of the hunt, and as such she was bound by a vow of chastity. Her name, meaning “most beautiful,” reflects her renown. She is often described as a huntress, living in the wilds of Arcadia, and her story is told by several ancient sources, including Hesiod’s Astronomia (fragments), Ovid’s Metamorphoses, and the Library of Pseudo-Apollodorus.
Parents: Lycaon and His Daughters
Callisto’s father is consistently identified as Lycaon, the mythical king of Arcadia. Lycaon was a son of Pelasgus, who was considered the first man in Greek mythology, born from the earth. Lycaon himself is famous for a different myth: he tested Zeus by serving him the flesh of his own son (or a hostage) and was turned into a wolf as punishment. Some later sources, such as the Roman poet Ovid, name Callisto’s mother as a certain Nonacris, but this is not a widely attested tradition. Most ancient texts simply call her the daughter of Lycaon without naming her mother. Because Lycaon had many children, Callisto’s siblings include various sons and daughters, but they are rarely mentioned in connection with her story.
Zeus and the Birth of Arcas
The central event of Callisto’s myth is her seduction or rape by Zeus, the king of the gods. Zeus, captivated by her beauty, approached her in the guise of Artemis (or, in some versions, Apollo) to win her trust. As a result of this union, Callisto became pregnant. When Artemis discovered that Callisto had broken her vow of chastity, she expelled her from her company. In some versions, Artemis shoots Callisto with an arrow; in others, she simply banishes her. In Ovid’s account, it is Zeus’s wife Hera who punishes Callisto by transforming her into a bear, either out of jealousy or as a punishment for the infidelity.
Callisto gave birth to a son, Arcas, who would become the eponymous ancestor of the Arcadians. The name “Arcas” is directly linked to Arcadia, and he is considered the founder of the region’s royal line. In some traditions, Arcas was raised by his grandfather Lycaon or by a foster mother, while in others he was taken by Zeus to be raised by the goddess Maia.
The Transformation into a Bear
The most famous part of Callisto’s story is her transformation into a bear. The details vary by source:
- Hera’s revenge: In Ovid’s Metamorphoses, Hera transforms Callisto into a bear as punishment for her infidelity with Zeus. Callisto, now a bear, is hunted by her own son Arcas, who does not recognize her.
- Artemis’s punishment: In some earlier Greek versions, Artemis transforms Callisto into a bear because she broke her vow of chastity. This version is found in Hesiod’s Astronomia and in the Library of Pseudo-Apollodorus.
- Zeus’s intervention: In all versions, Zeus intervenes at the last moment to save Callisto from being killed by Arcas. He places her among the stars as the constellation Ursa Major, and he places Arcas as Ursa Minor, or in some versions, he places Arcas as the constellation Boötes (the Herdsman).
The myth explains why the Great Bear constellation never sets below the horizon in the northern sky: because Hera, still angry, asked the sea god Oceanus not to let the bear bathe in his waters. This is why Ursa Major is circumpolar from Greece.
Arcas and the Founding of Arcadia
Arcas, Callisto’s son, grew up to become a great king. He is credited with teaching his people the art of bread-making and weaving, and he is said to have introduced the cultivation of wheat. He married a nymph named Erato (or, in some versions, a mortal woman named Meganeira), and their descendants became the kings of Arcadia. The region of Arcadia was named after him, and his sons, such as Apheidas and Elatus, became the ancestors of various Arcadian tribes. In this way, Callisto’s family tree extends to include the entire population of ancient Arcadia, who considered her their ancestor.
Callisto in the Sky: The Constellations
The myth of Callisto is one of the most famous catasterisms (turning into a constellation) in Greek mythology. The constellations associated with her story are:
- Ursa Major: The Great Bear, representing Callisto herself.
- Ursa Minor: The Little Bear, representing either Arcas or, in some versions, the dog of Callisto.
- Boötes: The Herdsman, sometimes identified as Arcas, driving the bears around the pole.
The identification of Ursa Major as a bear is ancient, but the specific myth of Callisto is a later interpretation. The constellation was known as the Bear in Homer’s time, but the story of Callisto and Arcas was likely added to explain its name. In some versions, the two bears are said to be Callisto and Arcas, with Arcas being the Little Bear.
Common Misconceptions
One common misconception is that Callisto was turned into a bear by Zeus to hide her from Hera. This is not the standard version. In most sources, the transformation is a punishment, not a protection. Another misconception is that Arcas was turned into a bear as well. In the most common version, Arcas is turned into the Little Bear, but he is a bear only in the sky; on earth, he remains human. Also, some people confuse Callisto with the nymph Io, who was turned into a cow by Zeus for similar reasons. While both myths involve Zeus’s infidelity and transformations, they are distinct stories with different characters and outcomes.
Frequently Asked Questions
Who were Callisto’s parents?
Callisto’s father was Lycaon, the king of Arcadia. Her mother is usually not named in ancient sources. Some Roman authors, like Ovid, give her the name Nonacris, but this is a rare and late addition.
Who was Callisto’s son?
Callisto’s son was Arcas, who was fathered by Zeus. Arcas became the eponymous hero of Arcadia and the ancestor of the Arcadian people. He was placed in the sky as the constellation Boötes or Ursa Minor, depending on the version.
Why did Zeus turn Callisto into a bear?
Zeus did not turn Callisto into a bear. In most versions, it was either Hera (out of jealousy) or Artemis (as punishment for breaking her vow of chastity) who transformed her. Zeus intervened only to save her from being killed by her son and to place her in the sky.
What is the difference between Ursa Major and Ursa Minor in this myth?
Ursa Major is Callisto herself, and Ursa Minor is her son Arcas. In some versions, Arcas is instead placed as the constellation Boötes, the Herdsman, who drives the bears around the celestial pole. The two constellations are often depicted as bears, with the Little Bear’s tail pointing to the North Star.
Did Callisto have any other children?
No, Callisto had only one child, Arcas. Her story is focused on this single offspring, who became the ancestor of the Arcadians. There are no other children attributed to her in any ancient source.
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