Fleas (Order Siphonaptera)

Identification
- Are ectoparasites known to transmit disease (e.g. plague, murine typhus)
- Include several pest species, namely cat, dog, human, rat, and squirrel fleas
- Measure about 1.5 mm in length, depending on species
- Are laterally flattened (i.e. flat at the sides)
- Are wingless; cannot fly
- Normally are brownish-black in colour; however, after feeding they will take on a reddish hue
- Have long and powerful hind legs that are adapted for jumping; can jump up to 20 cm vertically and about 40 cm horizontally
- Have short, 3-segmented antennae
- Mouthparts adapted for piercing and sucking
Habitat and Behaviour
- Can exist in a structure without the presence of their primary host (usually pets)
- Are protected in their pupal stage and can remain so for several months until temperature increases and vibrations are detected
- Adults can live several months without food (blood)
- Prefer high moisture environments, whether indoors or outdoors
- Will readily bite humans
Lifecycle
- Undergo complete metamorphosis (egg, larva, pupa, adult)
- Females require a blood meal prior to laying eggs which are deposited on the host animal and/or the host’s resting area
- Females are capable of producing upwards of 500 eggs over a lifetime
- Larvae require a blood meal to ensure development
