Sentient to an unknown degree
Black (white, if blind)
|Length of average adult||
Larger than 15 feet
|Ministry of Magic Classification||
An Acromantula is a species of giant spider, native to the rainforests of Southeast Asia, particularly Borneo where it inhabits dense jungle. Acromantulas are believed to be a wizard-bred species, designed to guard dwellings or treasure hoards, and were first created before the Ban on Experimental Breeding in 1965. These giant spiders, with a taste for human flesh, were first spotted in 1794.
- "Spiders. Not tiny spiders like those surging over the leaves below. Spiders the size of carthorses, eight-eyed, eight-legged, black, hairy, gigantic. The massive specimen that was carrying Harry made its way down the steep slope toward a misty, domed web in the very centre of the hollow, while its fellows closed in all around it, clicking their pincers excitedly at the sight of its load."
- —Harry Potter's description of the acromantulas[src]
The acromantulas sported eight, black eyes (white if blind) and are typically covered in thick black hair, with a leg span that can reach up to fifteen feet. They have the size of a carthorse, if adult. They possess a set of giant chelicerae which they use to eat live prey or their own dead kin. Their pincers produce a clicking sound when they are agitated or excited. They also secrete poison when excited.
The female is usually larger than the male, and can lay up to one hundred soft, wide, beach ball-sized eggs at a time. They usually hatch in six to eight weeks.
The name Acromantula has the Greek acro-, meaning high or "peak," and -mantula, from the English "tarantula." True to their name, Acromantulas are massive arachnids who tend to spin their expansive webs high in tree tops. Despite the names bearing a phonetic similarity to Tarantulas, they appear more like Wolf Spiders and are, in all depictions, araneomorphae.
Acromantulas in the Wizarding World
A colony of Acromantulas was established in the Forbidden Forest at Hogwarts School of Witchcraft and Wizardry by Aragog and his mate, Mosag. At first, Hagrid used to keep Aragog in a cupboard box in the school's dungeons. Aragog was released into the Forest by Rubeus Hagrid at about the time of the 1943 opening of the Chamber of Secrets
The Forbidden Forest Acromantula colony participated in the Battle of Hogwarts in 1998, when the Death Eaters drove them out of the Forest, and towards Hogwarts Castle. Rubeus Hagrid was captured by the Death Eaters after he was lost among the swarm in his efforts to protect Aragog's offspring.
Behind the scenes
- In the film adaptation of Harry Potter and the Chamber of Secrets, Harry Potter used Arania Exumai, a stunning or killing spell for use against spiders, while attempting to escape the Acromantula colony. He learned the spell from Tom Riddle upon visiting the latter's sixteen year old memory in his diary. The spell was never mentioned in the book.
- The Acromantulas in the film closely resemble wolf spiders than actual tarantulas.
- In Fantastic Beasts and Where to Find Them, Ron pens in nine "X"s to Acromantula's Classification. This is a reference to Ron's fear of spiders.
- The basilisk is the worst enemy of all spiders, feared so much that the spiders do not even speak of it. It is their worst enemy due to the basilisk's killing gaze and the fact that spiders have many eyes. In the case of Acromantulas, they have 8 eyes, making them highly vulnerable. They also have no eyelids.
- In the films Acromantulas have two big eyes, human-eye height, with a line of four small eyes underneath and an eye on each side of the head, human-temple height. Something that is not specified in the books.
- Harry Potter and the Chamber of Secrets (First appearance)
- Harry Potter and the Chamber of Secrets (film)
- Harry Potter and the Chamber of Secrets (video game)
- Harry Potter and the Prisoner of Azkaban (Seen as Boggart)
- Harry Potter and the Prisoner of Azkaban (film) (Seen as Boggart)
- Harry Potter and the Prisoner of Azkaban (video game) (Seen as Boggart) (GBA version only)
- Harry Potter and the Goblet of Fire
- Harry Potter and the Goblet of Fire (film) (Disc 2)
- Harry Potter and the Half-Blood Prince
- Harry Potter and the Half-Blood Prince (film)
- Harry Potter and the Half-Blood Prince (video game)
- Harry Potter and the Deathly Hallows
- Harry Potter and the Deathly Hallows: Part 1
- Harry Potter and the Deathly Hallows: Part 1 (video game)
- Harry Potter and the Deathly Hallows: Part 2
- Harry Potter and the Deathly Hallows: Part 2 (video game) 
- Fantastic Beasts and Where to Find Them
- Harry Potter: A Pop-Up Book
- LEGO Harry Potter: Building the Magical World
- LEGO Harry Potter: Characters of the Magical World
- LEGO Harry Potter: Years 1-4
- LEGO Harry Potter: Years 5-7
- Harry Potter and the Forbidden Journey
- J. K. Rowling's Official Site
- Harry Potter Trading Card Game
- Harry Potter LEGO Sets
Notes and references
- ↑ 1.0 1.1 1.2 1.3 Fantastic Beasts and Where to Find Them (real)
- ↑ Harry Potter Bloomsbury Glossary: Acromantula: exact quote: Monstrous eight-eyed, hairy spiders capable of human speech. Carthorse-sized and carnivorous, they have eight legs and sharp pincers. When excited or angry, they make a distinctive clicking sound and secrete poison. They fear Basilisks.
- ↑ Harry Potter and the Half-Blood Prince
- ↑ 4.0 4.1 Harry Potter and the Chamber of Secrets
- ↑ Harry Potter and the Goblet of Fire
- ↑ J. K. Rowling's Official Site
- ↑ In the Chamber of Secrets, a door is about to close. You can then see an Acromantula walking towards you before the door is closed.
|Professor: Bathsheda Babbling|
|Textbooks: Advanced Rune Translation · Ancient Runes Made Easy · Magical Hieroglyphs and Logograms · Rune Dictionary · Spellman's Syllabary|
|Known Runes: Acromantula · Demiguise · Ehwaz · Eihwaz · Fwooper · Graphorn · Hydra · Quintaped · Runespoor · Salamander · Unicorn · Unknown · Mark of Merlin|