It is being studied as a biological control agent for the hemlock woolly adelgid, as the larvae feed on overwintering adelgids.[1]
References
1. ^{{cite web|url=http://www.dcnr.state.pa.us/cs/groups/public/documents/document/dcnr_007179.pdf|title=Forest Health Fact Sheet|publisher=Pennsylvania Department of Conservation and Natural Resources|accessdate=2019-02-25}}
2. ^1 {{Cite web| title=Laricobius nigrinus species details| url=http://www.catalogueoflife.org/col/details/species/id/feb48c2b5d05d0d77d3814775720dd2c| website=Catalogue of Life| accessdate=2018-04-27}}
3. ^1 {{Cite web| title=Laricobius nigrinus| url=https://www.gbif.org/species/1038936| website=GBIF| accessdate=2018-04-27}}
4. ^1 {{Cite web| title=Laricobius nigrinus Species Information| url=https://bugguide.net/node/view/91474| website=BugGuide.net| accessdate=2018-04-27}}