''Willowsia nigromaculata'' is a member of the family

Entomobryidae Entomobryidae, sometimes called "slender springtails", is a family of springtails characterised by having an enlarged fourth abdominal segmentation (biology), segment and a well-developed furcula (Collembola), furcula. Species in this family ma ...

. 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.

References

Collembola Animals described in 1873 Arthropods of North America {{springtail-stub