Northern Rat Flea
(Nosopsyllus fasciatus)

Size: 3–4 mm
Characteristics: Dark brown, flattened, strong legs
Legs: 6
Antennae: Yes
Wings: No

Habitat:
This flea species lives on rats and rodents and in their nests. It may enter homes through rodent activity in basements, crawl spaces, or attics. Infestations are linked to rodent problems.

Threats & Dangers:
They bite humans when rodent hosts are unavailable. Historically associated with disease transmission. Presence indicates an underlying rodent infestation.

Control Measures:
Rodent control is the first priority. Professional flea treatments eliminate residual populations. Ongoing monitoring prevents reintroduction.