File:Rhithrogena_germanica_subimago_on_Equisetum_hyemale.jpg
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Summary
DescriptionRhithrogena germanica subimago on Equisetum hyemale.jpg |
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) mayfly in the 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. It is resting on a Rough Horsetail Equisetum hyemale stem.
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!) |
Date | |
Source | Own work |
Author | Richard Bartz, Munich aka Makro Freak Image:MFB.jpg |
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.
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Camera location | 48° 00′ 59.85″ N, 11° 29′ 23.76″ E | View this and other nearby images on: OpenStreetMap | 48.016626; 11.489934 |
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This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Subimago. You can see its nomination here. |
Items portrayed in this file
depicts
8 January 2008
48°0'59.854"N, 11°29'23.762"E
0.004 second
180 millimetre
640
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:48, 13 March 2009 | 1,622 × 2,000 (1.3 MB) | Richard Bartz | {{Assessments|com=1|com2=1|dewiki=1|enwiki=1}} ==Summary== {{Information |Description = {{de|Eine weibliche Subimago (ein geflügeltes Vorimaginalstadium) der '''Märzbräune''' (''Rhithrogena germanica'') aus der Familie Heptageniidae. Die Eintagsfli |
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Metadata
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Image title |
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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 |
Short title |
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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 |
Shutter speed | 7.965784 |
APEX aperture | 6.33985 |
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 width | 1,622 px |
Image height | 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 |
Sublocation of city shown | Munich |
IIM version | 2 |