عکس های زیبا از دنیای بسیار کوچک!

[Daniz]

Electron micrograph close-up of a weevil (Curculionidae family) - its snout is just over 100 microns wide. (Dartmouth Electron Microscope Facility/Dartmouth College)




Scanning electron microscope image of a leaf from a Black Walnut tree. Image shows a cross-section of a cut leaf, itsupper epidermal layer, mesophyll layer with palisade cells and vascular bundles, and lower epidermal layer. The protrusion at center is just over 50 microns tall. (Dartmouth Electron Microscope Facility/Dartmouth College)





At a magnification of 94X, this is a scanning electron micrograph view of the distal clawed tip of an adult figeater beetle's leg. The insect leg is comprised of a variable number of segments, incliuding the pretarsus, seen here with a claw and spiked empodium. (CDC/Janice Carr)




Scanning electron microscope image of an ant. Its eye is approximately 300 microns wide. (Dartmouth Electron Microscope Facility/Dartmouth College




Magnified 598x, this scanning electron micrograph depicts an enlarged view of the chitinous, exoskeletal surface of a male louse, Pediculus humanus var. corporis. In this particular view, the exoskeleton appears to be composed of interlocking plates. (CDC/Janice Carr





Scanning electron microscope image of the compound eye of a noctuid moth. Each facet of the eye (ommatidium) is approximately 25 microns wide. (Dartmouth Electron Microscope Facility/Dartmouth College




Scanning electron microscope image of a pyralidae moth, a side view of its head and curled proboscis. Its eye is about 800 microns wide. (Dartmouth Electron Microscope Facility/Dartmouth College




This scanning electron micrograph shows the exoskeletal morphology found on one of the six legs of an unidentified hornet found in the suburbs of Decatur, Georgia. Under a magnification of 87X, what this SEM reveals is the anatomical configuration of what is termed the leg's "tarsal chain", which comprises the tarsus, and pretarsus or claw. (CDC/Janice Carr






At a magnification of 765X, this scanning electron micrograph reveals morphologic details found at the tip of this adult figeater beetle's maxillary galea, which due to its shape, was given this Latin name for "helmet". The galea is located just medial to another, more prominent maxillary appendage, the palpus. Note the concave configuration at the distal tip of the galea, and how there are numerous pointed protuberances inside this concavity, which are most probably sensorial in nature. (CDC/Janice Carr






Description: At a magnification of 1504x, this scanning electron micrograph shows features of an Anopheles dirus mosquito's antennae. In this particular view, only the first two (of three) segments of the left antenna are visible. Covered with sensorial "hairs", which aren't really hairs at all, but exoskeletal chitinous extensions, known as "setae", they provide feedback to the mosquito as to chemical, thermal, and tactile changes in its environment. (CDC/Janice Carr





This scanning electron micrograph shows the "scape", or the first segment of an unidentified mosquito's left antenna magnified 500X. Note that the central region of the scape is concave, where the second segment of the antenna, known as the "pedicle" will interlock. The grape-like ommatidia surrounding the scape are the functional units of its compound eyes. (CDC/Janice Carr

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