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All Creatures and Factions

Fireflies
Fallout 76 NPC

Fireflies spawn across Appalachia in Fallout 76 at level 1. They count as insects in kill challenges. Killing one usually drops Bioluminescent Fluid and Firefly Abdomen.

They spawn at 176 locations in Appalachia. The largest counts are at The Trading Post, Arktos Pharma and Brim Quarry. They count toward 12 daily and weekly challenges.

Level
1
Health
2

Find It on the Map

Open the Challenge Navigator with its 12 challenges added, then add the rest of today's challenges and plan one route for all of them.

Open the Challenge Navigator

Fireflies Spawn Locations

Found at 176 locations across Appalachia, 7 in fixed spawns and 718 at chance spawn points. The largest share is at The Trading Post (4).

A plain number is how many are always there. The number after the is spawn points that may roll it; hover one for the odds.

The Trading Post
4 fixed nearby
Arktos Pharma
3 fixed
Brim Quarry
7 × 50% chance nearby
Monongah Power Substation MZ-03
7 × 32% chance nearby
Abandoned Mine Shaft 4
4 × 50% chance nearby
Abandoned Mine Shaft Elaine
4 × 50% chance nearby
Gleaming Depths
4 × 50% chance nearby
Hornwright Testing Site #02
4 × 50% chance nearby
Red Rocket Filling Station
4 × 50% chance nearby
Rollins Labor Camp
4 × 50% chance nearby
Becker Farm
15 × 13% chance nearby
Mire's Eye
7 × 25% chance nearby
Smith Farm
12 × 13% chance nearby
Raleigh Clay's Bunker
6 × 25% chance nearby
Abandoned Mine Shaft 6
3 × 50% chance nearby
Abandoned Mine Site Kittery
3 × 50% chance nearby
Hornwright Testing Site #03
3 × 50% chance nearby
Appalachian Antiques
8 × 17% chance nearby
Garrahan Mining Headquarters
14 × 9% chance nearby
Woods Estate
10 × 13% chance nearby
Show all 176 locations

Drops

What a kill leaves behind, averaged over every Fireflies the map spawns. Kinds of loot stand for lists too long to spell out; the chance is how often the roll includes them, not how many turn up.

Challenges

Challenge
Daily / Weekly
Kill a Creature
Daily ×12 · Weekly ×20
Kill a Creature while in a Team
Daily ×10
Kill a Creature while intoxicated by Hard Lemonade
Daily ×5
Kill a Creature while intoxicated by Lead Champagne
Daily ×5
Kill a Creature while intoxicated by Mire Magic Moonshine
Daily ×5
Kill a Creature While Mutated
Epic Weekly ×25
Kill a Creature while Wearing a Costume
Daily ×10 · Weekly ×20
Kill a Creature while Well Fed
Daily ×10 · Weekly ×20
Kill a Creature with a Hammer
Epic Weekly ×15
Kill Creatures with the Cold Shoulder
Daily ×10 · Weekly ×30
Kill Insects
Daily ×5 · Weekly ×30
Kill Insects with an Energy Weapon
Epic Daily ×5 · Epic Weekly ×15
Kill a Creature · Kill a Creature while in a Team · Kill a Creature while intoxicated by Hard Lemonade · Kill a Creature while intoxicated by Lead Champagne · Kill a Creature while intoxicated by Mire Magic Moonshine · Kill a Creature While Mutated · Kill a Creature while Well Fed
Any of 46
AnglersGlowing AnglerBeaversBloatfliesGlowing BloatflyBloodbugsGlowing BloodbugBrahminCatsCave CricketsGlowing Cave CricketChickensDeathclawsGlowing Deathclaw, Rusted DeathclawFeral GhoulsCommunist, Glowing OneFirefliesFloaters
Show all 46
Kill a Creature while Wearing a Costume
Kill a Creature with a Hammer
Kill Creatures with the Cold Shoulder
Any of 46
AnglersGlowing AnglerBeaversBloatfliesGlowing BloatflyBloodbugsGlowing BloodbugBrahminCatsCave CricketsGlowing Cave CricketChickensDeathclawsGlowing Deathclaw, Rusted DeathclawFeral GhoulsCommunist, Glowing OneFirefliesFloaters
Show all 46
Weapons that count
Kill Insects
Any of 12
BloatfliesGlowing BloatflyBloodbugsGlowing BloodbugCave CricketsGlowing Cave CricketFirefliesFog CrawlersGlowing Fog CrawlerHoney BeastsGlowing Honey BeastMothmenGlowing MothmanRad AntsGlowing AntRadroachesGlowing RadroachRadscorpionsBurning Radscorpion, Glowing RadscorpionStingwingsCorrosive Stingwing, Glowing StingwingTicksGlowing Tick
Kill Insects with an Energy Weapon
Any of 12
BloatfliesGlowing BloatflyBloodbugsGlowing BloodbugCave CricketsGlowing Cave CricketFirefliesFog CrawlersGlowing Fog CrawlerHoney BeastsGlowing Honey BeastMothmenGlowing MothmanRad AntsGlowing AntRadroachesGlowing RadroachRadscorpionsBurning Radscorpion, Glowing RadscorpionStingwingsCorrosive Stingwing, Glowing StingwingTicksGlowing Tick