ALL ANSWERS · INSECTS · DAILY No. 47 · OCTOBER 20, 2026
Size It Up Insects answer: October 20
The five Insects silhouettes for October 20, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 47 ran from a human flea (1.95 mm) to a luna moth (9 cm). The widest gap was round 5, Great Diving Beetle against Bed Bug, at 9.6×; the closest call was round 4, Mourning Cloak against European Hornet, only 2.3× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
You have not finished today’s puzzle on this device. The answers below are blurred so you can still play first.
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ROUND 1
Human Flea (adult) vs Firebrat (adult)
Firebrat · reference · 1.15 cm Human Flea · true length · 1.95 mm 5.9× shorter than the firebrat
Human Flea: 1.95 mm body length for the selected adult. Selected 1.95 mm within the published adult range 1.5-4 mm. Head to abdomen tip in side view; bristles and legs excluded.
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ROUND 2
Brown Marmorated Stink Bug (adult) vs Head Louse (adult)
Head Louse · reference · 2.2 mm Brown Marmorated Stink Bug · true length · 1.7 cm 7.7× longer than the head louse
Brown Marmorated Stink Bug: 17 mm body length for the selected adult. Published adult length about 17 mm. Head to abdomen tip; antennae and legs excluded. Dorsal outline rotated to align the body.
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ROUND 3
Luna Moth (adult · open wings) vs Red-tailed Bumblebee (adult)
Red-tailed Bumblebee · reference · 2.2 cm Luna Moth · true wingspan · 9 cm 4.1× wider than the red-tailed bumblebee
Luna Moth: 90 mm wingspan for the selected adult. Selected 90 mm within published adult wingspan 75–105 mm. Furthest left to furthest right wingtip; trailing hindwing tails do not define this span.
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ROUND 4
Mourning Cloak (adult · open wings) vs European Hornet (large adult)
European Hornet · reference · 3.5 cm Mourning Cloak · true wingspan · 8 cm 2.3× wider than the European hornet
Mourning Cloak: 80 mm wingspan for the selected adult. Selected 80 mm within published wingspan 2.5–3.5 inches (63.5–88.9 mm). Furthest left to furthest right wingtip with wings spread.
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ROUND 5
Great Diving Beetle (adult) vs Bed Bug (adult)
Bed Bug · reference · 4.6 mm Great Diving Beetle · true length · 4.4 cm 9.6× longer than the bed bug
Great Diving Beetle: 44 mm body length for the selected adult. Selected 44 mm at the top of the published adult range 38-44 mm. Head to elytra tip; antennae and legs excluded.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.