# Grain weevil (*Sitophilus granarius*)

Canonical page: https://creaturedata.com/animals/grain-weevil  
Data as of: 2026-11-14

The grain weevil (Sitophilus granarius) is a species in the family Dryophthoridae, order Coleoptera. Recorded adults reach 3.7 mm in length.

## Quick facts

| Fact | Value |
|---|---|
| Weight | Not recorded |
| Length | 2.7 mm – 3.7 mm |
| Lifespan | Not recorded |
| Diet | Herbivore |
| Main food | Not recorded |
| Habitat | human_modified |
| Young per litter or clutch | Not recorded |
| Conservation status | Not recorded |
| Countries on record | Not recorded |

## Introduced range

The Global Register of Introduced and Invasive Species lists it as introduced in 11 countries, and flagged as invasive in 2 of them. Introduced: China, Cyprus, Denmark, Estonia, Latvia, Mongolia, Poland, Russia, United Arab Emirates, United States, Venezuela. Invasive: China, Latvia. Source: https://griis.org/ (CC BY 4.0).

## Classification

- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Dryophthoridae
- genus: Sitophilus
- species: *Sitophilus granarius* (Linnaeus, C., 1758)

Synonyms: *Calandra granaria*, *Calandra granarius*, *Cordyle granaria*, *Cordyle granarius*, *Curculio contractus*, *Curculio flavipes*, *Curculio frumentarius*, *Curculio granarius*, *Curculio pulicarius*, *Curculio unicolor*, *Rhynchophorus granarius*, *Rhynchophorus ruber*

## Common questions

### How big is the grain weevil?

An adult grain weevil measures 2.7 mm – 3.7 mm long, according to values recorded on Wikidata.

### Is the grain weevil an invasive species?

In some places. The Global Register of Introduced and Invasive Species flags the grain weevil as invasive in 2 countries: China and Latvia. It lists it as introduced in 11 in all.

### What kind of animal is the grain weevil?

The grain weevil (Sitophilus granarius) belongs to the family Dryophthoridae in the order Coleoptera.

## Sources

- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Global Register of Introduced and Invasive Species (GRIIS)](https://griis.org/), CC BY 4.0, 2026-11-13. Pagad, S., Genovesi, P., Carnevali, L., Schigel, D. & McGeoch, M.A. (2018) Introducing the Global Register of Introduced and Invasive Species. Scientific Data 5: 170202. https://doi.org/10.1038/sdata.2017.202. Country checklists published through GBIF by the IUCN SSC Invasive Species Specialist Group.
- [TraitCH: a multi-taxa functional trait dataset for Switzerland and Europe](https://doi.org/10.5281/zenodo.15063844), CC BY 4.0, 2.0. Chauvier, Y., Adde, A., Bergamini, A. et al. (2025) TraitCH: a multi-taxa functional trait dataset for Switzerland and Europe. Zenodo. https://doi.org/10.5281/zenodo.15063844

Cite as: Grain weevil (Sitophilus granarius). Retrieved from https://creaturedata.com/animals/grain-weevil