Bug FAQStaph beetle
Tasgius ater · Order: Coleoptera · Family: Staphylinidae
Tasgius ater is a large rove beetle belonging to the family Staphylinidae. All available sources describe it only by its size and taxonomic family.
Source: Wikipedia
How to recognize it
Tasgius ater is identified as a large rove beetle in the family Staphylinidae.
Source: Wikipedia
Size
It is a species of large rove beetle.
Source: Wikipedia
Is it a pest in the house?
It is listed as a large rove beetle, with no specific household impact noted.
Source: Wikipedia
Can it bite, sting or make you sick?
No bite or sting information is provided beyond its classification as a large rove beetle.
Source: Wikipedia
Where it lives
Its habitat is described only as that of a large rove beetle.
Source: Wikipedia
Life cycle
Life-cycle information is limited to it being a large rove beetle.
Source: Wikipedia
When you see it
Seasonal activity is only mentioned in the context of a large rove beetle.
Source: Wikipedia
Where it comes from
The species is noted as a large rove beetle, with no specific range given.
Source: Wikipedia
Lookalikes
It is simply a large rove beetle.
Source: Wikipedia
Where it is found in the US
Recorded in 24 of 51 states and DC. Most records: Colorado, Massachusetts, California, Washington, New York, Nebraska, Kansas, New Mexico.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: introduced in North America; introduced in Canada; introduced in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Same family (Staphylinidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Tasgius_ater
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.