Bed Bugs
Appearance
Adult bedbugs are reddish-brown, flattened, oval, and wingless, about 1/4-inch in length. Bed bugs are wingless, and from above they are oval in shape, but they are flattened from top to bottom.
Cat Flea
Appearance
Tiny, about 1/6-inch in length; reddish brown and flattened.
Mosquito
Appearance
Pale brown with whitish stripes across abdomen; narrow oval shape; 1/4- to 3/8-inch. Females are easily recognized by long thin proboscis, or mouthparts, extending from the head.
Ticks
Appearance
Ticks vary in color by species. Adult ticks are 1/8- to 5/8-inch long if engorged with blood, nymphal (or immature) ticks are less than 1/16-inch. Common pest ticks include the American dog tick, deer tick, and lone star tick.