Jewel Bug

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Jewel Bug
Jewel Bug
Appears in Yoshi and the Mysterious Book (2026)

Jewel Bugs are a type of underground critter in Yoshi and the Mysterious Book. They are large beetles with blue jewels serving as their mandibles and elytra. They crawl along the walls of caves and in sediment while spinning their mandible.

In both Hauger Habitat and Underbit Habitat, a jewel bug is trapped inside a boulder in the sediment. When the boulder is cracked open, the jewel bug starts moving through the sediment. It can be destroyed after being hit three times by the Hauger or Underbit, revealing the discoveries "Smashed the jewel bug!" and "Even gobbled down a jewel bug!", respectively.

Jewel Bug

In Slugarang Habitat, a jewel bug can be found in the top-left cave. It can be knocked down by a Slugarang that has gained momentum. It shatters upon hitting the ground, revealing a jewel and the discovery "Diamond-hard shell smashed!". This jewel bug has a unique opalescent appearance matching the jewel that it drops.

In Spincone Habitat, a jewel bug is trapped inside a boulder in the cave. It can be destroyed after being hit three times by a spinnning Spincone, revealing the discovery "A jewel bug's worst nightmare".

Profiles[edit]

  • Underground Critters page description:
    • English:
      Their diet of underground minerals makes their shells grow as hard as jewels.
    • Other languages:
      • Italian:
        La dieta di minerali sotterranei rende il suo guscio duro come una pietra preziosa.
      • Portuguese (Brazil):
        Sua dieta de minerais subterrâneos faz com que sua carapaça seja dura como uma gema.

Names in other languages[edit]

Language Name Meaning Note(s) Ref.
Japanese 宝石虫ほうせきむし
Hōseki-mushi		 Jewel Bug [1]
Chinese (Simplified) 宝石虫
Băoshíchóng (Mandarin)
Bóusehkchùhng (Cantonese)		 Gemstone Bug [1]
Chinese (Traditional) 寶石蟲
Băoshíchóng (Mandarin)
Bóusehkchùhng (Cantonese)		 Gemstone Bug [1]
Dutch Juweelkever Jewel beetle [1]
French (Canada) Insecte joyau Jewel insect [1]
French (Europe) Insecte joyau Jewel insect [1]
German Juwelenkäfer Jewel beetle [1]
Italian Insetto gioiello Jewel bug [1]
Korean 보석벌레
Boseok-beolle		 Gemstone Bug [1]
Portuguese (Brazil) Inseto-joia Jewel insect [1]
Spanish (Latin America) Joyarabajo from joya ("jewel") and escarabajo ("beetle") [1]
Spanish (Europe) Joyarabajo from joya ("jewel") and escarabajo ("beetle") [1]

References[edit]

  1. ^ a b c d e f g h i j k l Section heading on Underground Critters page. May 21, 2026. Yoshi and the Mysterious Book. Good-Feel. Archived by Reese Rivers (talk).
[Edit]
Yoshi and the Mysterious Book
Characters Protagonists Yoshis (Yoshi)
Antagonists Bowser Jr. • Kamek
Supporting Bowser • Mr. E
Moves Crawl • Crouch • Egg Throw • Flutter Jump • Ground Pound • Jump • Swallow • Tail Flick
Chapters Wildwoods • Mountaintops • Seaside • Settled Valley • Bug Country • Remote Isle • Underground • Tallest of Trees • Miniworld • Moon • Special Studies • Mr. E's Challenges
Creatures Index Bafloonder • Behedger • Bewilder Bird • Billeau • Blorp • Bounseed • Bugya (Big) • Bunchabee (Big) • Casterway • Crazee Dayzee (Moon) • Croakaoke • Crudwurm • Cuttlefwoosh • Detonut • Eleedee • Floofly • Glubbit • Gobbobble • Goonie (Flightless) • Goopsie • Grab-Grass • Hauger • Huffin Puffin • Hufungous • Jam Guy • Jetty Jelly • Little Mouser • Loopdeecoop • Lunge Fish (Small) • Mawstalk • Milde (Hefty · Big · Mega) • Nep-Enut • Ouchin • Plumebrella • Peckadee • Piranha Plant (Nipper Plant · Nipper Spore) • Raven (Mini-Raven) • Scatterpuff • Shy Guy • Slugarang • Snurfboard • Spincone • Springhopper • Stickiwick • Swirm • Taggit • Thudd • Tumball • Underbit • Upshoot • Wash Squash • Weewoo • Wiggaline • Wooshwing • Yu Ef Oh
Other Alien • Beautiful Fish • Butterfly (Gold) • Chime Bug • Egg Flower • Fast Fish • Golden Bug • Golden-Bug Larva • High-Speed Bug • Jewel Bug • Large Fish • Mole • Neon Bug • Pebble Bug • Small Fish • Super-Spicy Bug • Whopper
Objects Items ! Switch • Empty Can • Fruit (Apple · Hard seed · Heart turnip · Hot pepper · Note fruit · Watermelon) • Key • Smiley Flower • Token • Winged Cloud • Yoshi's Egg
Obstacles Balloon plant • Bomber Bill • Boulder • Bullet Bill • Honey • Lava • Mud • Water
Miscellaneous Bubble • Junior Clown Car • Magic brush
Play Nintendo Creature quiz! • Pet project • Poll: Quirky creatures • Poll: True colors
Miscellaneous amiibo • Bowser's Castle • Crack open Yoshi's next adventure! • Exploration Tool • Gallery • Staff • Quotes • Yoshi's Island
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