{{Short description|Family of true bugs}} {{Automatic taxobox | image = Paratachardina decorella from CSIRO.jpg | image_caption = rosette lac scale<br>(''Paratachardina decorella'') | taxon = Kerriidae | authority =Lindinger, 1937 | synonyms = Kerridae | synonyms_ref = <ref name = GBIF/> }}
'''''Kerriidae''''' is a family of scale insects,<ref>{{Cite book|url=https://books.google.com/books?id=qBAHchSfZJIC&q=kerriidae+family&pg=PA247|title=A Systematic Catalogue of Eight Scale Insect Families (Hemiptera: Coccoidea) of The World|last=Ben-Dov|first=Yair|collaboration=Miller, Douglass R.; Gibson, Gary A. P.|publisher=Elsevier Science|year=2006|isbn=978-0-444-52836-0|pages=247}}</ref> commonly known as '''lac insects''' or '''lac scales''', erected by Karl Lindinger in 1937.
Some members of the genera ''Metatachardia'', ''Tachardiella'', ''Austrotacharidia'', ''Afrotachardina'', ''Tachardina'', and ''Kerria'' are raised for commercial purposes, though the most commonly cultivated species is ''Kerria lacca''. These insects secrete a waxy resin that is harvested and converted commercially into lac and shellac, used in various dyes, cosmetics, food glazes, wood finishing varnishes and polishes.{{Cn|date=January 2021}}
Commercially-used species include: *''Kerria lacca'' – true lac scale *''Paratachardina decorella'' – rosette lac scale *''Paratachardina pseudolobata'' – lobate lac scale
==Genera== The Global Biodiversity Information Facility<ref name = GBIF>[https://www.gbif.org/species/4525 Global Biodiversity Information Facility: family Keriidae] (retrieved 19 July 2025)</ref> lists: # ''Afrotachardina'' {{Au|Chamberlin, 1923}} # ''Albotachardina'' {{Au|Zhang, 1992}} # ''Austrotachardia'' {{Au|Chamberlin, 1923}} # ''Austrotachardiella'' {{Au|Chamberlin, 1923}} # ''Kerria'' {{Au|Targioni-Tozzetti, 1884}} - '''type genus''' # ''Laccifer'' {{Au|Oken, 1815}} # ''Metatachardia'' {{Au|Chamberlin, 1923}} # ''Paratachardina'' {{Au|Balachowsky, 1950}} # ''Tachardia'' {{Au|Blanchard, 1886}} # ''Tachardiella'' {{Au|Cockerell, 1901}} # ''Tachardina'' {{Au|Cockerell, 1901}}
==See also== * Shellac * Lac (resin)
==References== {{reflist}}
==External links== *{{Commons category-inline|Kerriidae}} *[https://www.uniprot.org/taxonomy/249430 Taxonomy] {{Taxonbar|from=Q3434347}} {{Hemiptera|2}}
Category:Kerriidae Category:Scale insects Category:Hemiptera families Category:Neococcoids Category:Taxa described in 1937