Butterflies
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Butterfly








Statistics
Type | |
---|---|
Environment | |
AI Type | Butterfly AI |
Damage | 0 |
Max Life | 5 |
Defense | 0 |
KB Resist | 0% |
Sounds
Hurt | |
---|---|
Killed |
- Internal NPC ID: 356, 444 (Gold)
Hell Butterfly

Statistics
Type | |
---|---|
Environment | |
AI Type | Butterfly AI |
Damage | 0 |
Max Life | 5 |
Defense | 0 |
KB Resist | 0% |
Sounds
Hurt | |
---|---|
Killed |
- Internal NPC ID: 653
Butterflies are small critters that can be found in Forests during daytime. They can be caught with a Bug Net (except for the Hell Butterfly) and carried in the inventory or crafted into Butterfly Jars. They can also be used as bait for fishing. The Underworld variant, Hell Butterfly, can be found in the Underworld during daytime.
Attempting to catch a Hell Butterfly with a standard Bug Net will not work, and the player will take 1 damage and be inflicted with On Fire! for 5 seconds / 10 seconds / 13 seconds.[1]
Types
Butterfly | Rarity | Sell | Bait Power |
NPC ID | Notes | |
---|---|---|---|---|---|---|
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Gold Butterfly Internal Item ID: 2891
|
![]() |
10 | 50% | 444 |
|
![]() |
Julia Butterfly Internal Item ID: 2001
|
![]() |
30 | 25% | 356 | |
![]() |
Monarch Butterfly Internal Item ID: 1994
|
![]() |
5 | 5% | 356 | |
![]() |
Purple Emperor Butterfly Internal Item ID: 1995
|
![]() |
75 | 35% | 356 | |
![]() |
Red Admiral Butterfly Internal Item ID: 1996
|
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40 | 30% | 356 | |
![]() |
Sulphur Butterfly Internal Item ID: 1998
|
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10 | 10% | 356 | |
![]() |
Tree Nymph Butterfly Internal Item ID: 1999
|
![]() |
1 | 50% | 356 |
|
![]() |
Ulysses Butterfly Internal Item ID: 1997
|
![]() |
20 | 20% | 356 | |
![]() |
Zebra Swallowtail Butterfly Internal Item ID: 2000
|
![]() |
15 | 15% | 356 | |
![]() |
Hell Butterfly Internal Item ID: 4845
|
![]() |
20 | 15% | 653 |
|
Crafting
Used in
Notes
- At every dusk (7:30 PM), or each time the world is loaded, the spawn rate of Butterflies and Stinkbugs are set to a random value. Below is the detailed info:[2]
- For Butterflies and Stinkbugs, there are two parameters:
andbutterflyChance
, the spawn rate of Butterflies and Stinkbugs, respectively.stinkBugChance
- For Butterflies and Stinkbugs, there are two parameters:
- These parameters are set in the following way:
- First,
33.33*1/3 (33.33%) chance:
= 999999 (effectively preventing them to spawn), andbutterflyChance
= 1–13, then there is astinkBugChance
20*1/5 (20%) chance for the
to be set to 999999.stinkBugChance
- If the
33.33*1/3 (33.33%) chance failed, then:
= 999999, andstinkBugChance
= 1–20, then there is abutterflyChance
20*1/5 (20%) chance for the
to be set to 999999.butterflyChance
- This effectively makes a day can only have Butterflies or Stinkbugs, not both of them.
- If the
- Then, if the world is a Celebrationmk10 world,
is divided by 2. If the value is lower than 1 after dividing, then set it to 1.butterflyChance
- First,
- First,
= 1–24.butterflyChance
- Then, there is a
33.33*1/3 (33.33%) chance for the
to be set to 999999.butterflyChance
- First,
- After these parameters are set, they will be used in spawning. Note that the following chances are only related to the respective critter and for reference only, they do not account for other spawns:[4]
- Butterflies can only spawn during daytime when not raining, the player is on surface, is not in a Graveyard, and the wind speed is lower than 20 mph.
- There is a
chance for a Butterfly to spawn, then there are two individual1/butterflyChance
25*1/4 (25%) chances for an extra Butterfly to spawn.
- As a result, they can appear in groups of 1–3.
- There is a
- For Hell Butterflies, they do not use the former spawning mechanic. They can always spawn in the Underworld during daytime, one at a time.
Tips
- New players should be on the lookout for days when lots of butterflies spawn, since they can fetch high prices. One day can easily net over 10.
Trivia
Bestiary entries
- Butterflies: "Beautiful fluttering insects that love sunrises. Fish are attracted to these based on their color variety."
- Hell Butterfly: "A solemn butterfly seeking blooms rooted in hell. Its wings glimmer with fiery veins."
See also
- Prismatic Lacewing, a boss-summoning critter whose behavior is similar to butterflies
History
- Desktop 1.4.4: Increased the chances of having a Butterfly day (
changed from 1–24 to 1–20).butterflyChance
- Desktop 1.4.0.1:
- Hell Butterfly added.
- Butterflies can now actively try to avoid enemies close to them.
- Increased the chances of having a Butterfly day (chance of
set to 999999 decreased frombutterflyChance
33.33*1/3 (33.33%) to25*1/4 (25%)).
- Desktop 1.3.0.1: Gold Butterfly added.
- Desktop 1.2.4: Can now be used as bait.
- Desktop 1.2.3: Introduced.
- Console 1.06: Introduced.
- Mobile 1.4.0.5.0:
- Hell Butterfly added.
- Mobile 1.3.0.7: Gold Butterfly added.
- Mobile 1.2.11212: Introduced.
References
- ↑ Information taken from the
Desktop 1.4.4.6 source code, method
ItemCheck_CatchCritters()
inTerraria.Player.cs
. There may be inaccuracies, as the currentDesktop version is 1.4.4.9.
- ↑ Information taken from the
Desktop 1.4.4.6 source code, methods
setFireFlyChance()
inTerraria.NPC.cs
,UpdateTime_StartNight()
inTerraria.Main.cs
, andLoadWorld()
inTerraria.IO.WorldFile.cs
. There may be inaccuracies, as the currentDesktop version is 1.4.4.9.
- ↑ Information taken from the
Desktop 1.3.5.3 source code, method
setFireFlyChance()
inTerraria.NPC.cs
. - ↑ Information taken from the
Desktop 1.4.4.6 source code, method
SpawnNPC()
inTerraria.NPC.cs
. There may be inaccuracies, as the currentDesktop version is 1.4.4.9.
Categories:
- Desktop content
- Console content
- Old-gen console content
- Mobile content
- 3DS content
- Forest NPCs
- The Underworld NPCs
- Critter NPCs
- Butterfly AI NPCs
- Pages with information based on outdated versions of Terraria's source code
- Bait items
- Crafting material items
- Consumable items
- Items of rarity 3
- Items of rarity 1
- Items of rarity 0
- Items of rarity 2
- Recipes table with unexpected total number of rows