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    Provence burnet moth on common thistle wildflower outdoors. — Stock Photo
    Provence burnet moth on common thistle wildflower outdoors.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Close-up of caterpillar cocoon attached to thin stem. — Stock Photo
    Close-up of caterpillar cocoon attached to thin stem.
    Close-up of nursery web spider in hunting position on leaves. — Stock Photo
    Close-up of nursery web spider in hunting position on leaves.
    Colorful blow fly sitting on branch covered by yellow lichens. — Stock Photo
    Colorful blow fly sitting on branch covered by yellow lichens.
    Caddis on a branch in the Southeast — Stock Photo
    Caddis on a branch in the Southeast
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Spanish fly colourful elytron surface texture. — Stock Photo
    Spanish fly colourful elytron surface texture.
    Slender crab spider on leaf in hunting position. — Stock Photo
    Slender crab spider on leaf in hunting position.
    Illustration of ascariasis worm on black background. — Stock Photo
    Illustration of ascariasis worm on black background.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Close-up of flower crab spider in hunting position on wildflower. — Stock Photo
    Close-up of flower crab spider in hunting position on wildflower.
    Close-up of leaf beetle on wild plant stem. — Stock Photo
    Close-up of leaf beetle on wild plant stem.
    Close-up of marmalade hoverfly perched on thin branch. — Stock Photo
    Close-up of marmalade hoverfly perched on thin branch.
    Copepod, coloured scanning electron micrograph (SEM). — Stock Photo
    Copepod, coloured scanning electron micrograph (SEM).
    Hindleg detail of parasitic Brachymeria femorata wasp. — Stock Photo
    Hindleg detail of parasitic Brachymeria femorata wasp.
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Seven spot lady bug on thin branch. — Stock Photo
    Seven spot lady bug on thin branch.
    Gelly-fish in ocean, close up — Stock Photo
    Gelly-fish in ocean, close up
    Digital illustration of head of parasitic hookworm Ancylostoma duodenale in small intestine. — Stock Photo
    Digital illustration of head of parasitic hookworm Ancylostoma duodenale in small intestine.
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Close-up of orange knee sawfly beetle on plant stem. — Stock Photo
    Close-up of orange knee sawfly beetle on plant stem.
    Jewel bugs metallic shield bugs — Stock Photo
    Jewel bugs metallic shield bugs
    Sweat bee sitting at top of grass seedhead. — Stock Photo
    Sweat bee sitting at top of grass seedhead.
    Glowing coral reef in ocean — Stock Photo
    Glowing coral reef in ocean
    Adult female mosquito — Stock Photo
    Adult female mosquito
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Nursery web spider on edge of colorful dried leaf. — Stock Photo
    Nursery web spider on edge of colorful dried leaf.
    Octopus at produce market on background, close up — Stock Photo
    Octopus at produce market on background, close up
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Close-up of leaf hopper nymph on thin yellow plant stem. — Stock Photo
    Close-up of leaf hopper nymph on thin yellow plant stem.
    Close up of Weevil crawling on the ground — Stock Photo
    Close up of Weevil crawling on the ground
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    Bees on top of honeycomb. — Stock Photo
    Bees on top of honeycomb.
    Sheetweb spider sitting on grass seed head. — Stock Photo
    Sheetweb spider sitting on grass seed head.
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species — Stock Photo
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species
    Adult female mosquito — Stock Photo
    Adult female mosquito
    Underwater photograph of the putative Siphonophore species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Underwater photograph of the putative Siphonophore species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island of Hawaii, Hawaii, United States of America
    Close-up of thick-headed fly sitting on wildflower. — Stock Photo
    Close-up of thick-headed fly sitting on wildflower.
    Tortricidae moth on green plant leaf. — Stock Photo
    Tortricidae moth on green plant leaf.
    Ancient ammonite animal on black background, computer illustration. — Stock Photo
    Ancient ammonite animal on black background, computer illustration.
    Trapped harlequin ladybird on yellow foxtail grass. — Stock Photo
    Trapped harlequin ladybird on yellow foxtail grass.
    Ventral view of wood boaring beetle in wildlife — Stock Photo
    Ventral view of wood boaring beetle in wildlife
    Lynx spider sitting on wild plant leaf. — Stock Photo
    Lynx spider sitting on wild plant leaf.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract.
    Seven-spot ladybird (Coccinella septempunctata) sleeping on a plant leaf. — Stock Photo
    Seven-spot ladybird (Coccinella septempunctata) sleeping on a plant leaf.
    Cross section of nautilus shell with spiral structure. — Stock Photo
    Cross section of nautilus shell with spiral structure.
    Close-up of small copper butterfly covered by dew drops on wild plant. — Stock Photo
    Close-up of small copper butterfly covered by dew drops on wild plant.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    France, Normandy, fresh fishes and seefood displayed on a fish market — Stock Photo
    France, Normandy, fresh fishes and seefood displayed on a fish market
    Colorful corals on reef near Sulawesi — Stock Photo
    Colorful corals on reef near Sulawesi
    Front view of a Tufted Spiny Lobster (Panulirus penicillatus) showing its tufted legs that was photographed while scuba diving the Kona Coast; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Front view of a Tufted Spiny Lobster (Panulirus penicillatus) showing its tufted legs that was photographed while scuba diving the Kona Coast; Island of Hawaii, Hawaii, United States of America
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Habropoda bee on common chicory flower in field. — Stock Photo
    Habropoda bee on common chicory flower in field.
    Open winged silkmoth perched on branch. — Stock Photo
    Open winged silkmoth perched on branch.
    Ecosystem of reef life under blue ocean — Stock Photo
    Ecosystem of reef life under blue ocean
    Variegated meadowhawk perched on plant in meadow, close-up. — Stock Photo
    Variegated meadowhawk perched on plant in meadow, close-up.