INSECT STRUCTURE LARVA ADULT mouthparts gut salivary gland INTRODUCTION TO ARTHROPODS INSECT STRUCTURE LARVA ADULT mouthparts gut salivary gland excretory tubule anus eye antenna legs wings reproductive organs

MITE AND TICK STRUCTURE INTRODUCTION TO ARTHROPODS MITE AND TICK STRUCTURE mouthparts salivary glands excretory tubules gut legs anus reproductive organs (opening is between front legs so that mouthparts can assist in mating & egg laying)

LIFE PATH OF LICE (an incomplete metamorphosis) egg larva several nymphs female male INTRODUCTION TO ARTHROPODS LIFE PATH OF LICE (an incomplete metamorphosis) The larva which hatches from the egg is a miniature version of the adult. Nymphs are also similar to adults. There is no pupa stage.

FLEA AND FLY LIFE PATHS (a complete metamorphosis, egg three larval stages pupa adult FLY FLEA INTRODUCTION TO ARTHROPODS FLEA AND FLY LIFE PATHS (a complete metamorphosis, with a pupa which is transitional between larvae - adult)

LIFE PATH OF TICK (an incomplete metamorphosis, this egg larva moult nymph adult [the three feeds may be all on same species of host such as deer or sheep or different species] INTRODUCTION TO ARTHROPODS LIFE PATH OF TICK (an incomplete metamorphosis, this is a three-host type of feeding)

CUTTING / SLASHING HYPODERMIC INTRODUCTION TO ARTHROPODS BLOOD FEEDING MECHANISMS CUTTING / SLASHING HYPODERMIC TICK FEEDING LESION epidermis dermis capillaries attachment glue