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Photomicrograph of freshwater leech. Sucker attached to cover slip at bottom. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination. Note - motion blur of live animal, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Small lake form of European perch. Place fishing stated in geotagging file

The normal liver cells or hepatocytes contain lipid droplets, more frequent near the central vein of hepatic lobules, that can be demonstrated using osmium tetroxide as fixative. In steatosis or fatty liver disease, the amount of lipid droplets is pathologically very increased.

$Tot 30-39mm, Ab 25-32mm, HW 19-23mm.\nOur most delicate Lestes, which is normally easily separated by its statue and coloration, although some Iberian populations recall L. barbarous.\nHabitat: A wide variety of seasonally dry shallow and reedy waters in the south, becoming more critical in the north-west, where it is most abundant in heath and bog lakes with peat moss (Sphagnum) and rushes (Juncus).\nFlight Season: Northern populations mostly emerge in July, flying into November.\nDistribution: Widespread in Europe, although seldom the dominant Lestes species. Distribution recall L. barbarous, and also tends to wander like that species, though rarely in similarly great numbers.\n\nThis Species is to be seen in the describe Habitats, but not as common as L. sponsa in the Netherlands.$

green dragonfly close up. Macro shots nature scene dragonfly. green dragonfly in the nature habitat. Calopteryx splendens male

a female flat-bellied dragonfly (Libellula depressa) perches on a withered branch. In the background a green meadow. There is a lot of space for text. The dragonfly is photographed from above

Amphilophus Labiatus red devil and Astronotus ocellatus

Lepidoptera larvae in the wild, North China

Gastrotricha, Biological Classification: Phylum seen under Microscope. They are commonly referred to as Hairy backs. They live on and in between particles of Sediment on the seabed floor. There are nearly 809 species that are either Freshwater or Seawater Creatures

A male migrant hawker hanging from a bramble in the English countryside.

$Field characters: Tot 56-64mm, Ab 43-54mm, Hw 37-42mm. Distinctly smaller than most Aeshna species.\n\nThe commonest small hawker. Numerous in much of our area, and although it can be on the wing during most months in the Mediterranean, further north it is especially associated with late summer and autumn, when it may appear in massive migrations. It is usually identified by its size, relative dull colours and the diagnostic yellow \$

Toxotes chatareus, sometimes known by the common names common archerfish in aquarium tank

Hookworm egg human parasite in stool examination test find microscope 40x.

A beautiful antelope against a backdrop of a wide expanse of open grassland.

photo of green fly on plant stem. selective focus

Mantis is a type of mantis originating from the island of Borneo. It has a unique body shape and is colored like dried leaves to disguise itself for prey.

Side view of a red deer hind (Cervus elaphus) walking in quiet morning sunshine. She is walking away from a harem group where the possessive male seems to have entirely missed her walking away. Stags are usually very active in trying to prevent a female from leaving a harem.

Tiger and king prawns lie on a light table. Frozen products in ice glaze.

$Tot: 45-50mm, Ab 30-37mm, Hw 33-38mm.\nIdentification:\nVery similar to O. cancellatum, with which it is found especially in the south-east, and as far west as France. However, it is sleeker, paler and more contrasting. Named for the contrasting white appendages of both sexes.\nBehavior:\nLike O. cancellatum, male often sits on open ground near the water, making very fast, low flights over the water.\nOccurrence:\nDistribution is patchy, but the species is generally not uncommon, stretching to China and Japan.\nHabitat: Open Ponds and Lakes.\nFlight Season: From the end of May to mid-September.\n\nThis nice Skimmer is photographed during a Vacation in France in May 1990. Scanned from a slide.$

Closeup Blooming Blueberry On Branch, Fertile Bushes Covered With Inflorescence. Big Organic Cluster Of Berries. Farming, Gardening. Horizontal Plane. High quality photo

Female Steenbuck (Raphicerus campestris) in the Kruger National Park, South Africa

Free Images: "bestof:Zygoballus optatus allotype ventral with scale.jpg en Female allotype of Zygoballus optatus jumping spider Photographed at the Museum of Comparative Zoology"

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Zygoballus optatus allotype ventral with scale.jpg

Zygoballus optatus allotype epigyne ventral with scale.jpg

Zygoballus optatus allotype epigyne ventral.jpg

Zygoballus optatus allotype dorsal with scale.jpg

Zygoballus electus allotype epigyne ventral with scale.jpg

Zygoballus electus allotype epigyne ventral.jpg

Zygoballus optatus holotype ventral with scale.jpg

Zygoballus concolor allotype ventral with scale.jpg

Zygoballus minutus allotype dorsal with scale.jpg

Zygoballus optatus holotype pedipalp ventral with scale.jpg

Zygoballus optatus holotype pedipalp ventral.jpg

Zygoballus concolor allotype ventral.jpg

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Zygoballus optatus holotype dorsal with scale.jpg

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Zygoballus optatus holotype lateral with scale.jpg

Zygoballus optatus holotype pedipalp lateral.jpg

Zygoballus optatus holotype pedipalp lateral with scale.jpg

Zygoballus iridescens holotype ventral view.jpg

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Zygoballus minutus allotype epigyne with scale.jpg

Zygoballus concolor holotype ventral.jpg

Zygoballus concolor holotype ventral with scale.jpg

Zygoballus iridescens holotype dorsal view.jpg

Zygoballus electus holotype ventral with scale.jpg

Zygoballus remotus holotype ventral with scale.jpg

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Zygoballus concolor holotype pedipalp ventral.jpg

Zygoballus electus holotype pedipalp ventral with scale.jpg

Zygoballus remotus holotype pedipalp ventral with scale.jpg

Zygoballus concolor holotype pedipalp ventral with scale.jpg

Zygoballus electus holotype pedipalp lateral.jpg

Zygoballus electus holotype pedipalp lateral with scale.jpg

Zygoballus electus holotype dorsal with scale.jpg

Zygoballus electus holotype lateral with scale.jpg

Zygoballus remotus holotype dorsal with scale.jpg

Zygoballus concolor holotype dorsal with scale.jpg

Zygoballus concolor holotype pedipalp lateral with scale.jpg

Zygoballus concolor holotype pedipalp lateral.jpg

Zygoballus concolor epigyne with scale.jpg

Zygoballus electus epigyne with scale.jpg

Zygoballus electus pedipalp ventral with scale.jpg

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Zygoballus tibialis holotype pedipalp ventral with scale.jpg

Zygoballus maculatus holotype ventral.jpg

Zygoballus maculatus holotype epigyne ventral.jpg

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Kaldari Zygoballus sexpunctatus female 02.jpg

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Zygoballus minutus lateral 01 with scale.jpg

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Kaldari Zygoballus rufipes female 01.jpg

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Kaldari Zygoballus nervosus female 02.jpg