<em>Willowsia nigromaculata</em> in Baltimore Co., Maryland (5/18/2021). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1244961 - Psn: 35)

Willowsia nigromaculata in Baltimore Co., Maryland (5/18/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

A <em>Willowsia nigromaculata</em> in Prince George's Co., Maryland (6/12/2014). Determined by Frans Janssens. (Photo ID: 20224 - Psn: 50)

A Willowsia nigromaculata in Prince George's Co., Maryland (6/12/2014). Determined by Frans Janssens.

View Record Details Photo by Jesse Christopherson MBP List

A <em>Willowsia nigromaculata</em> in Prince George's Co., Maryland (6/12/2014). Determined by Frans Janssens. (Photo ID: 21791 - Psn: 52)

A Willowsia nigromaculata in Prince George's Co., Maryland (6/12/2014). Determined by Frans Janssens.

View Record Details Photo by Jesse Christopherson MBP List

A <em>Willowsia nigromaculata</em> in Baltimore City, Maryland (7/4/2016). Determined by Ken Wolgemuth/BugGuide. (Photo ID: 56061 - Psn: 60)

A Willowsia nigromaculata in Baltimore City, Maryland (7/4/2016). Determined by Ken Wolgemuth/BugGuide.

View Record Details Photo by Derek Hudgins MBP List

<em>Willowsia nigromaculata</em> in Baltimore City, Maryland (9/11/2018). (c) Derek Hudgins, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1244763 - Psn: 65)

Willowsia nigromaculata in Baltimore City, Maryland (9/11/2018). (c) Derek Hudgins, some rights reserved (CC BY-NC).

View Record Details Photo by tdhudgins via iNaturalist MBP List

<em>Willowsia nigromaculata</em> in Montgomery Co., Maryland (3/21/2016). (c) Even Dankowicz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 1244777 - Psn: 66)

Willowsia nigromaculata in Montgomery Co., Maryland (3/21/2016). (c) Even Dankowicz, some rights reserved (CC BY).

View Record Details Photo by Even Dankowicz via iNaturalist MBP List

A <em>Willowsia nigromaculata</em> in Prince George's Co., Maryland (8/11/2014). Verified by Ken Wogelmuth and Frans Janssens/BugGuide. (Photo ID: 21763 - Psn: 75)

A Willowsia nigromaculata in Prince George's Co., Maryland (8/11/2014). Verified by Ken Wogelmuth and Frans Janssens/BugGuide.

View Record Details Photo by Jesse Christopherson MBP List

A <em>Willowsia nigromaculata</em> in Prince George's Co., Maryland (11/8/2018). Determined by Ken Wolgemuth and Frans Janssens via BugGuide. (Photo ID: 127896 - Psn: 76)

A Willowsia nigromaculata in Prince George's Co., Maryland (11/8/2018). Determined by Ken Wolgemuth and Frans Janssens via BugGuide.

View Record Details Photo by Jesse Christopherson MBP List

<em>Willowsia nigromaculata</em> in Baltimore City, Maryland (5/13/2017). (c) Derek Hudgins, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1244991 - Psn: 77)

Willowsia nigromaculata in Baltimore City, Maryland (5/13/2017). (c) Derek Hudgins, some rights reserved (CC BY-NC).

View Record Details Photo by tdhudgins via iNaturalist MBP List

<em>Willowsia nigromaculata</em> in Anne Arundel Co., Maryland (Date obscured). (c) treichard, all rights reserved. (Photo ID: 232335 - Psn: 78)

View Record Details Photo by Timothy Reichard MBP List

<em>Willowsia nigromaculata</em> in Anne Arundel Co., Maryland (Date obscured). (c) Timothy Reichard, all rights reserved. (Photo ID: 232553 - Psn: 88)

View Record Details Photo by Timothy Reichard MBP List

Willowsia nigromaculata in Baltimore City, Maryland (5/13/2017). (c) Derek Hudgins, some rights reserved (CC BY-NC).

View Record Details Photo by tdhudgins via iNaturalist MBP List

<em>Willowsia nigromaculata</em> in Baltimore City, Maryland (5/19/2025). (c) nicolasyehya, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1262820 - Psn: 88)

Willowsia nigromaculata in Baltimore City, Maryland (5/19/2025). (c) nicolasyehya, some rights reserved (CC BY-NC).

View Record Details Photo by nicolasyehya via iNaturalist MBP List

<em>Willowsia nigromaculata</em> in Baltimore City, Maryland (7/17/2017). (c) Derek Hudgins, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1245372 - Psn: 95)

Willowsia nigromaculata in Baltimore City, Maryland (7/17/2017). (c) Derek Hudgins, some rights reserved (CC BY-NC).

View Record Details Photo by tdhudgins via iNaturalist MBP List

Map Snapshot

18 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

Status

Often found in man-made structures like greenhouses (Frans Janssens/BugGuide).

Seasonality Summary

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Resources

View at iNaturalist Search Google Images Search MBP Facebook posts

View images at BugGuide

Citations

No citations linked for this taxon yet.

Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Willowsia nigromaculata in Baltimore Co., Maryland (5/18/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

A Willowsia nigromaculata in Prince George's Co., Maryland (6/12/2014). Determined by Frans Janssens. View Record Details Media by Jesse Christopherson.

A Willowsia nigromaculata in Baltimore City, Maryland (7/4/2016). Determined by Ken Wolgemuth/BugGuide. View Record Details Media by Derek Hudgins.

Willowsia nigromaculata in Baltimore City, Maryland (9/11/2018). (c) Derek Hudgins, some rights reserved (CC BY-NC). View Record Details Media by tdhudgins via iNaturalist.

Willowsia nigromaculata in Montgomery Co., Maryland (3/21/2016). (c) Even Dankowicz, some rights reserved (CC BY). View Record Details Media by Even Dankowicz via iNaturalist.

A Willowsia nigromaculata in Prince George's Co., Maryland (8/11/2014). Verified by Ken Wogelmuth and Frans Janssens/BugGuide. View Record Details Media by Jesse Christopherson.

A Willowsia nigromaculata in Prince George's Co., Maryland (11/8/2018). Determined by Ken Wolgemuth and Frans Janssens via BugGuide. View Record Details Media by Jesse Christopherson.

Willowsia nigromaculata in Baltimore City, Maryland (5/13/2017). (c) Derek Hudgins, some rights reserved (CC BY-NC). View Record Details Media by tdhudgins via iNaturalist.

Willowsia nigromaculata in Baltimore City, Maryland (5/19/2025). (c) nicolasyehya, some rights reserved (CC BY-NC). View Record Details Media by nicolasyehya via iNaturalist.

Willowsia nigromaculata in Baltimore City, Maryland (7/17/2017). (c) Derek Hudgins, some rights reserved (CC BY-NC). View Record Details Media by tdhudgins via iNaturalist.

Source: Wikipedia

Willowsia nigromaculata

Found in a bathtub in Michigan
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	Pancrustacea
Class:	Collembola
Order:	Entomobryomorpha
Family:	Entomobryidae
Genus:	Willowsia
Species:	W. nigromaculata
Binomial name
*Willowsia nigromaculata* (Lubbock, 1873) ^[1]
Synonyms
Seira nigromaculata Lubbock, 1873 Willowsia mimica Harvey, 1894

Willowsia nigromaculata is a member of the family Entomobryidae. It has a metallic iridescent body and is covered in translucent scales. It is often found indoors in places such as houses, garages and greenhouses.^[2]