Biology wikidata glossary

Double Taxonomic Wikidata Items

At the center, the double wikidata items

Most biology wikicommons categories have a link to a couple of wikidata items:

• item 1: a Wikidata Category Item, with:
  • P301 (category's main topic) = item 2.

  Example 'Category:Achariaceae' (Q8833475)

• item 2: a Wikidata Taxon Item, with:
  • P910 (topic's main category) = item 1.

  Example 'Achariaceae' (Q651518)

Example: Category:Neoptera has a Double Taxonomic Wikidata Item: 'Category:Neoptera' (Q9850796) + 'Neoptera' (Q23005)

Wikidata Category Item

It is a wikidata item describing a category of taxon.

By definition it has:

• P31 (instance of)='Wikimedia category' (Q4167836)

It should also have:

• WikiCommons interwiki=a Wikicommons category (with Category:) (Mandatory)
• P373 (Commons category)=a Wikicommons category (without Category:) (Mandatory)
• P301 (category's main topic)=a Wikidata Taxon Item (Optional. If set, we have a double taxonomic Wikidata items)
• P935 (Commons gallery)=a Wikicommons gallery (Optional. If set, P301 should also be set)

Example: 'Category:Neoptera' (Q9850796)

Wikidata Taxon Item

It is a wikidata item describing a taxon.

By definition it has:

• P31 (instance of)='taxon' (Q16521)

It should also have:

• P910 (topic's main category)=a Wikidata Category Item (Optional. If set, we have a double taxonomic Wikidata items)
• P373 (Commons category)=a Wikicommons category (without Category:)
• P935 (Commons gallery)=a Wikicommons gallery

• P171 (parent taxon)=another Wikidata Taxon Item (Optional but recommanded)
• P105 (taxon rank)=an item like 'infraclass' (Q2007442) (Mandatory)
• P225 (taxon name)=the taxon scientific name (Mandatory)
• many properties listed in WikiProject_Taxonomy#Databases, like
  • P685 (NCBI taxonomy ID)=the id of the taxon in NCBI website

Example: 'Neoptera' (Q23005)