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🧬 Biological Classification (Kingdom to Species)Sitophilus oryzae

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dryophthoridae

Genus

Sitophilus

Species

Sitophilus oryzae

Insecta🌿 Herbivore

Rice weevil

Sitophilus oryzae (Rice weevil · Rice weevil)

🛡️ Conservation Status (IUCN Red List)NE (Not Evaluated)

Not Evaluated (NE) on the IUCN Red List yet.

Geological Era

Extant

Diet

Herbivore

Length · Height

2.5~3.5mm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Grain storage warehouses and rice containers (inside grain kernels)

💡 Everyday Comparisons for Size, Mass & Speed

💡 This is the tiny bug often found inside household rice jars or rice bags. Korea's Rural Development Administration recommends keeping rice in an airtight container in the refrigerator.
💡 Its maximum body length of 3.5 mm is about 1/5 the diameter of a Korean 10-won coin (18 mm) (Comparison).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#쌀바구미#Sitophilus oryzae

📖 1. Overview

The rice weevil is a small weevil that develops inside cereal grains such as rice and wheat, and is a major pest of stored grain. It is distributed worldwide.

🦴 2. Anatomy & Morphology

It is 2.5–3.5 mm in body length and dark reddish-brown, with mandibles at the tip of a long snout and two pale markings on each forewing. Its wings are well developed, allowing it to fly and disperse.

🔍 3. Ecology & Behavior

The female lays 300–400 eggs, and the egg, larval, and pupal stages are spent inside the grain kernel, making them hard to see from the outside. A life cycle can be completed in as little as 32 days, and adults live for 3–6 months.

🇰🇷 4. Connection to Korea

In a survey of stored rice in the Jeollanam-do region, the rice weevil went through 4 generations per year and appeared in the highest numbers from late July to late August. Korea's Rural Development Administration advises storing rice sealed in a cool, dry place or in a refrigerator, as pests can develop in rice during hot and humid summers.