Curculio occidentis
species of beetle
Curculio occidentis, the filbert weevil, is a species of weevil in the genus Curculio. The weevils are considered a pest for many species of oak tree due to the damage they cause to acorns.
Distribution
Curculio occidentis is native to the western side of North America. Its range includes British Columbia in Canada, California, Arizona, New Mexico and Utah in the United States, and Mexico.
Ecology
The female Curculio occidentis lays small batches of two to four eggs in a developing acorn. The resulting larvae feed on the kernel and when fully developed, tunnel out of the nut, fall to the ground and dig themselves a small soil chamber. They may wait one or two years before pupating. In infestation damage research, Quercus garryana acorns were collected in 1996, 1997 (low crop years) and in 1998 (high crop year). Researchers concluded that levels of infestation did not vary with crown level during the low crop years but varied during the high crop year.
During the high crop year, weeviled acorns were more present at the lower portion of the tree than the upper part of the tree.
This brief starts where responsible research should: with the source description of “Curculio occidentis” as species of beetle. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of beetle. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jan 15, 2026. The linked authority identifier is Q10858402. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1996, 1997 and 1998.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Curculio occidentis”, its source revision and the description used here.
- Expand the search: follow Curculio occidentis primary sources, Curculio occidentis archive and Curculio research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Curculio occidentis”?
- Which observation, specimen, dataset or publication supports the account?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Curculio occidentis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.