File:Rhithrogena germanica subimago on Equisetum hyemale.jpg

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Summary

Description
Deutsch: Eine weibliche Subimago (ein geflügeltes Vorimaginalstadium) der Märzbräune (Rhithrogena germanica) aus der Familie Heptageniidae. Die Subimagines besitzen eine behaarte Haut (Subimaginalhaut), die auch die Flügel überzieht. Diese sind deshalb bei den Subimagines stets etwas trüb und haben häufig, wie auch bei R. germanica, eine bestimmte Musterung. Imaginalflügel sind hingegen in aller Regel hyalin und klar durchscheinend.
Die Eintagsfliegen (Ephemeroptera, auch Ephemoptera; von gr. ephemeros - eintägig, pteron - Flügel) sind die ursprünglichsten unter den Fluginsekten (Pterygota). Es gibt sie schon seit 200 Millionen Jahren. Die Eintagsfliegen bilden eine Ordnung innerhalb der Klasse der Insekten (Insecta). Von den bekannten 2.800 Arten leben in Mitteleuropa mehr als 100. Die Eintagsfliege im Bild ruht auf einem Winter-Schachtelhalm (Equisetum hyemale) aus der Klasse der Schachtelhalme (Equisetopsida).
English: A female subimago of March Brown (Rhithrogena germanica) of family Heptageniidae. Mayflies are insects which belong to the Order Ephemeroptera (from the Greek ephemeros, short-lived and pteron, wing, referring to the short life span of adults). They have been placed into an ancient group of insects termed the Paleoptera, which also contains the dragonflies and damselflies. They are aquatic insects whose immature stage (called naiad or, colloquially, nymph) usually lasts one year in fresh water. The rests on Rough Horsetail or Scouringrush Horsetail (Equisetum hyemale)
Français : Un subimago femelle de (Rhithrogena germanica) sur une fructification de Prêle. Rhithrogena germanica est une mouche de mai ou éphémère de la famille des Heptageniidés. Rhithrogena germanica est une espèce répandue en Europe, sur toutes les rivières, mais avec une prédilection pour les eaux froides et oxygénées de moyenne montagne.
Identification: Dr. Arne Haybach at www.ephemeroptera.de (thanks!)

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Author Richard Bartz, Munich aka Makro Freak Image:MFB.jpg
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Camera location

48° 0′ 59.85″ N, 11° 29′ 23.76″ E

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File history

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Date/TimeThumbnailDimensionsUserComment
current00:18, 28 August 2011Thumbnail for version as of 00:18, 28 August 20111,622 × 2,000 (1.3 MB)Media-caching-bot (Talk | contribs){{Cached Commons Copy|file=Rhithrogena_germanica_subimago_on_Equisetum_hyemale.jpg|lastuploader=Richard Bartz|time=2011-08-28, 01:18}} {{Assessments|com=1|com2=1|dewiki=1|enwiki=1|trwiki=1}} == {{int:filedesc}} == {{Information |Description = {{de|Ein
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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Image title
  • Ephemera sp. drying on Equisetum arvense
Camera manufacturer Canon
Camera model Canon EOS 40D
Author Richard Bartz aka Makro Freak
Exposure time 1/250 sec (0.004)
F Number f/9
ISO speed rating 640
Date and time of data generation 15:00, 5 April 2008
Lens focal length 180 mm
Orientation Normal
Horizontal resolution 240 dpi
Vertical resolution 240 dpi
Software used Adobe Photoshop CS Windows
File change date and time 19:00, 7 April 2008
Exposure Program Aperture priority
Exif version 2.21
Date and time of digitizing 15:00, 5 April 2008
APEX shutter speed 7.965784
APEX aperture 6.33985
APEX exposure bias 0
Maximum land aperture 3.625 APEX (f/3.51)
Metering mode Pattern
Flash Flash did not fire, compulsory flash suppression
Color space sRGB
Focal plane X resolution 4,438.3561643836
Focal plane Y resolution 4,445.9691252144
Focal plane resolution unit inches
Custom image processing Normal process
Exposure mode Auto exposure
White balance Manual white balance
Scene capture type Standard
Image height 1,622 px
Image width 2,000 px
Serial number of camera 830539968
Lens used 180mm
Width 1,622 px
Height 2,000 px
Date metadata was last modified 20:00, 7 April 2008
Rating (out of 5) 5
Short title
  • Ephemeroptera
Sublocation of city shown Munich
IIM version 2
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