Insects

nsects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum. Definitions and circumscriptions vary; usually, insects comprise a class within the Arthropoda. As used here, the term Insecta is synonymous with Ectognatha. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans.

Cicada sitting on a tree during the day - Nature Stock Photo Agency
Cicada orni hanging upside down - Nature Stock Photo Agency
Cicada close-up - Nature Stock Photo Agency
Cicada hidden in a tree - Nature Stock Photo Agency
Cicada orni on a tree - Nature Stock Photo Agency
Marbled white butterfly on lavender - Nature Stock Photo Agency
Cicada orni resting during the day - Nature Stock Photo Agency
Scarce swallowtail on lavender - Nature Stock Photo Agency
Cicada in a tree trunk - Nature Stock Photo Agency
Cicada orni hanging in the evening - Nature Stock Photo Agency
Cicada orni between the leaves - Nature Stock Photo Agency
Cicada sitting on a branch - Nature Stock Photo Agency
Cicada hanging in a tree - Nature Stock Photo Agency
Cicada on a trunk with moss - Nature Stock Photo Agency
Marbled white on some lavender - Nature Stock Photo Agency
Cicada orni near some orange moss - Nature Stock Photo Agency
Common blue enjoying lavender - Nature Stock Photo Agency
Manna cicada in the light on a tree branch - Nature Stock Photo Agency
Manna cicada vertical on a tree - Nature Stock Photo Agency
Camouflage cicada on a tree - Nature Stock Photo Agency
Cicada hanging on a wooden pole - Nature Stock Photo Agency
Manna cicada on a wooden plank - Nature Stock Photo Agency
Cicada on tree bark - Nature Stock Photo Agency
Male stag beetle climbing on bark - Nature Stock Photo Agency
Zebra longwing (Heliconius charithonia) on a flower - Nature Stock Photo Agency
Tiger heliconian butterfly closeup - Nature Stock Photo Agency
Great capricorn longhorn beetle closeup - Nature Stock Photo Agency
Male stag beetle on a tree - Nature Stock Photo Agency
Stag beetle closeup with moss - Nature Stock Photo Agency
Stag beetle, Veluwe The Netherlands - Nature Stock Photo Agency
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