Bug Catching Guide: Nets, Spawn Conditions, and Rare Bugs

Net Basics: How Bug Catching Works

You get the Worn Net from the story quest 'Something's Bugging Me' early in the game. Bugs appear as small critters wandering the world; walk up and swing the net to catch one. There is no aiming minigame, no charge mechanic - nets have no charged feature at all - and no skill line tied to catching, so there is nothing to level and nothing to optimize beyond knowing where bugs spawn.

That has one practical consequence worth real money: the Copper, Iron, Silver, and Gold net upgrades (1,000t to 4,000t, 4 ingots each) are purely cosmetic. They catch bugs no better than the Worn Net. Skip them unless you want the look, and spend those ingots on your pickaxe or watering can instead.

One bonus use: the net also swats Stone projectiles from Clods and Clod Bombs from Silverclods out of the air in the Mines, which is a genuinely useful defensive trick on clod-heavy floors. Most villagers dislike receiving bugs as gifts - the big exception is Luc, who loves many of them - so your catches are mostly museum fodder and pocket money.

Spawn Conditions: Season, Weather, and Time of Day

Every overworld bug checks three conditions: season, weather, and time of day. Time bands come in three flavors - day (6 AM - 8 PM), night (8 PM - 2 AM), and all-day (6 AM - 2 AM). Common examples:

Weather-locked species are the ones that stall your museum progress. The Lightning Dragonfly (rare, 20t) only appears during storms and thunderstorms in spring through fall, and only during the day, across Sweetwater Farm, The Narrows, the Eastern Road, and Mistria. Winter's Crystal Caterpillar (rare, 20t) needs snow or a blizzard. When the forecast turns ugly, that is bug-hunting weather, not a day to stay inside. The beach is its own reliable all-season spot too, with Beach Hoppers, Sand Bugs, Hermit Crabs, and Relic Crabs available year-round.

Hidden Spawns: Trees, Grass, and Rocks

A whole layer of the bug codex never spawns wandering in the open. These critters pop out of objects you interact with, which means a bug run should be woven into chores you are already doing:

• Shake trees: Caterpillar (spring), Cicada (summer), Crystal Caterpillar (winter, snowy days), and Loam Caterpillar in the Deep Woods.
• Cut grass: Petalhopper (spring), Grasshopper and Strawhopper (spring-fall), Leafhopper (fall), and Icehopper (winter).
• Break rocks: Roly Poly (spring), Jewel Beetle (summer), Chillipede (fall), Snug Bug (winter), and Redhead Worm (spring-fall). The Mines add their own rock-break bugs: Sea Scarab (Tide Caverns), Deep Earthworm and Rock Roach (Deep Earth).

The efficient routine is seasonal: on day one of each season, do a loop of town shaking every tree, scything any grass patches, and smashing loose rocks on your farm and the roads. That single circuit usually bags the season's hidden-spawn set in one pass. Mine bugs like the Copper Nugget Beetle, Lantern Moth, and Tunnel Millipede just spawn on their biome's floors as you explore, so keep the net hot-swap-ready whenever you are underground.

Rare and Legendary Bugs

Above the commons sit the rares at 20t: Luna Moth (spring nights), Orchid Mantis (spring days), Mistmoth (fall nights, and apparently unique to Mistria), Hummingbird Hawk Moth (spring-fall, all day, any weather), Magma Beetle (summer), and the day/night bee pair Flower Bee and Moonlight Bee. These spawn sparsely in the open overworld, so grabbing them is mostly a matter of walking wide routes through town every day instead of teleporting past everything.

The trophy tier is the very rare legendary bugs at 30t, one roughly per season:

• Flower Crown Beetle - spring, daytime, sunny or windy.
• Strobe Firefly - summer nights, sunny.
• Fairy Bee - fall, daytime (best odds in the morning), sunny or windy.
• Snowball Beetle - winter, blizzard only.
• Speedy Snail - spring through fall, famously fast and hard to sneak up on.

The deep biomes hide the priciest natural bugs in the game: Mine Cricket (35t, Upper Mines), Puddle Spider (45t, Tide Caverns), Crystal Wing Moth (50t, Deep Earth), Singing Katydid (70t, Deep Woods), Diamond Beetle (80t, Lava Caves), and Hidden Beetle (90t, Ancient Ruins). If you are already mining those floors for ore, sweeping each room with the net before you leave is essentially free money.

Bug Pheromones and Terrariums

Version 0.15 added a parallel catching system: Bug Pheromones, produced by Terrariums, lure exclusive species that cannot spawn any other way. Using a pheromone of a given rarity attracts its matching bug:

These four (plus the Sunset Moth) fill the museum's Bug Pheromone set, and they are also the best flat sell prices of any bugs - the Biggest Beetle's 120t beats most fish. Since pheromone bugs spawn at any time of day in any season and weather, they are the most controllable part of the entire bug codex: the bottleneck is Terrarium output, not luck. Build terrariums early and let them accumulate while you work on the wild sets.

Museum Sets and Bug Money

The museum's Insects Wing has 19 sets: Multi-Season, the four seasonal sets, Bee, Grass, Beach, Rare, Legendary, Bug Pheromone, Deep Woods, and one set per mine biome (Upper Mines, Tide Caverns, Deep Earth, Lava Caves, Ruins). As everywhere else in the museum, each set wants exactly one of each bug, so the rule is simple - first catch goes in a chest until you donate it, duplicates get sold or gifted to Luc.

Set expectations on income honestly: overworld commons sell for 10t, so casual bug catching will never rival fishing or crops as a money engine. Where bugs do pay is the long tail - rare bees and moths at 20t, legendaries at 30t, deep-mine species at 35-90t, and pheromone bugs at 30-120t. Treat the net as a museum tool first and a side income second, and fold catching into routes you already walk. Donation milestones in the Insects Wing also unlock exclusive crafting recipes - the Bumblebee Plushie recipe, for instance, arrives at 18 completed Insects sets - which is a reward you cannot buy anywhere else.

Related Guides

Museum Completion Guide: All Wings, Donation Strategy, and Rewards

A completionist's roadmap for Mistria's museum: how donating works, all four wings and their 80 sets, what to donate versus sell, the skill-gated sets that block 100%, and every type of reward you earn along the way.

Gift Guide: Romance, Heart Events, and Every NPC's Favorite Gifts

Master Mistria's social system: exact friendship point values, heart thresholds from 1 to 10, how dating and marriage work in v1.0, the universal gift rules (and their exceptions), plus a quick-reference table for all twelve marriage candidates.

Fishing Guide: Rods, Locations, Seasons, and Every Rare Fish

Everything about fishing in Fields of Mistria: how casting and reeling actually work, every rod tier and its cost, where each water type hides different fish, how to land the four legendary fish, and which skill perks are worth your essence.