Morophology
Egg
Size: .5 mm
Color: white
Shape: oval
Texture: smooth
Description: Cat fleas egg have dry
and smooth surface so they can easily fell off hosts hair.
However, their white color and tiny size make it almost
impossible to see on floor or carpet.
Larva
Size: 1.5-6.0 mm
Color: slender, straw-colored,
brown head
Shape: wormlike, bristle creatures
Description: Larva doesn't have
eyes, legs. They are covered with few hairs. They possess dark
guts, visible through their thin transparent exoskeleton.
Pupa
Color: silky
Texture: sticky
Description: Larva spins into a
silky cocoon before they develop into adult flea. Since the
surface of pupa is sticky, dirt can stick to the surface to give
protection.
Adult Flea
Size: 1-3 mm
Color: reddish brown to black
Shape: laterally compressed,
wingless
Description: Adult fleas have 3
pairs of leg.
Their hind pair of legs is
modified for jumping. They can jump vertically up to 7 inches
and horizontally 13 inches. Unlike most other insects who have
compound eyes, fleas have either simple eyes or no eye at all.