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Crocothemis erythrea


Crocothemis erythrea
相片資料
著作權:philippe hornus (amanengone) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 187 W: 54 N: 412] (2113)
類別:Animals
媒體:彩色
拍攝日期:2015-08-12
分類:Insects
相機:Olympus E 30
Exposure:f/13.0, 1/250 seconds
More Photo Info:[view]
Photo Version:Original Version
提交日期:2016-12-27 15:52
觀看:934
數數:4
[Note Guidelines] 攝影師備註
Topic

Crocothemis erythraea ((Brull矇, 1832)

Phylogenetic classification

Root / Cellular organisms / Eukaryota / Unikonta / / Amorphea / / Obazoa / Opisthokonta / Holozoa / Filozoa / Apoikozoa / Animalia / Chonaobionta / Metazoa/ Eumetazoa / Bilateria/ Nephrozoa / Protostomia / Ecdysozoa / Panarthropoda / Tactopoda / Euarthropoda / Mandibulata / Pancrustacea / Hexapoda / Ectognatha / Insecta / Dicondylia / Pterygota/ Palaeoptera / Odonatoptera / Odonata / Epiprocta / Anisoptera / Libelluloidea / Libellulidae / Sympetrinae / Crocothemis / Crocothemis erythraea

Brief description

Medium-sized dragonfly (30 to 45 mm) with broad, flat abdomen. The wings are hyaline, with an amber spot on the basal part of the hind wings.

The entire body and the head of the adults are bright red for the males. The females and the immatures are of fawn colour. The thorax of the females carries a light strip (generally white) in the median position and two left and right, light-coloured lateral bands. Absence of dark spots on the head, thorax and legs.

The characters "amber spots of the hind wings" and "absence of dark spots" conjugated together make it possible to differentiate the genus Crocothemis from the other genera of Libellulidae.

The copy presented here makes it possible to fully appreciate the design of the anterior and posterior wings (see the "Guide to the Dragonflies of France and Europe - Delachaux and Niestl矇 editor for the precise description of the wings of dragonflies). Note, in particular, the additional radial, surmounted by a row of cells, as well as the enlarged discoidal field of the anterior wing. Presence of a pterostigma of fawn colour in the anterior side part of each of the four wings. Note also the presence of an amber spot in the anterior internal position of each of the two posterior wings.

Take note on the totem position of the abdomen on the insect.

Ecology

This insect is endemic to humid Mediterranean zones, in stagnant waters, mostly brackish (rice fields, pools of water ...). The specimen presented was observed in the Pont de Gau ornithological reserve, where stagnant lagoon waters are very present (as well as many birds).

Bibliography

Links

o Crocothemis erythrea in Wikipedia
o Fauna Europaea Fauna Database supported by the European Commission
o The IUCN Red List of Threatened Sepcies
o Mus矇um national dHistoire naturelle [Ed]. 2003-2016. Inventaire National du Patrimoine Naturel
o Dragonflies of France and elsewhere
o Soci矇t矇 Fran癟aise d'Odonatologie
o Taxonomy & Systematics Database
o Technique de prise de vue ultra rapide Les meilleures prises de vue jamais r矇alis矇es
o Quelques milliers de photo somptueuses + tout sur les odonates

Books

o Guide des libellules de France et dEurope K. D.B. Dijkstra / R.Lewingston ditions Delachaux et Niestl矇 K. D.B. Dijkstra / R.Lewingston
o Field Guide to the Dragonflies of Britain and Europe K. D.B. Dijkstra / R.Lewingston British Wildlife Publishing
o La Garrigue grandeur nature Jean-Marie Renault Les Cr矇ation du P矇lican / Vilo
o Pr矇cis de Sciences Biologiques - Zoologie / Invert矇br矇s P.P.Grass矇, R.A.Poisson et O.Tuzet Masson et Compagnie
o Classification phylog矇n矇tique du vivant G.Lecointre et H.Le Guyader Tomes 1 et 2 Belin 矇diteur
o LEncyclop矇die des animaux Jenni Bruce, Kareen MacGhee, Luba Vangelova, Richard Vogt University of California Press.
o Le monde du vivant Trait矇 de biologie W.K.Purves, G.H.Horians, H.C.Heller. Sciences Flammarion et Sinauer Associates Incorporated Massachusetts.

Shooting

Date of shooting 12/08/2015 13:35:47
Place of shooting R矇serve de biodiversit矇 Domaine de la Palissade - France
Latitude 43.37587 N
Longitude 04.81053 E

Camera

o Camera OLYMPUS DIGITAL CAMERA Model E-M1
o Objectif ZUIKO MinFocalLength 40 MaxFocalLength 150 Aperture 1: 2,8 - 3,5

Picture Specifications

o ImageWidth 4640
o ImageLength 3472
o BitsPerSample 16
o Compression Uncompressed
o Orientation Horizontal

Shooting conditions

o Light source Auto
o Metering mode Multi segment
o Picture mode Natural
o Exposure mode Aperture priority
o Focus mode Manual
o Focus process AF used
o Aperture f/13
o ExposureTime 1/250
o ISO Speed Rating 200
o FocalLength 150
o White Balance Temp Auto
o Noise Reduction 0
o Shading Compensation off
o Contrast normal
o Saturation normal
o Sharpness normal
o Mode image Natural

Raw treatement

Raw treatment and many other interesting topics from Cambridge University

Developpment of the raw file Olympus (*.orf) with DxO OpticsPro 11

Colour

o White Balance Temperature 4852 K Teinte -3
o Colours Accentuation vibrance 30 saturation 0
o Colours rebdering Referenced camera - Intensity 100 Saturated colours protection 20
o TSL none

Light

o Compensation exposition none
o DxO smart lighting none
o Tonalit矇 s矇lective -5, 2 -5 , -5
o DxO clear view 50
o Contraste 0, 30, 0
o Courbe des tons none
o Vignetage Auto, bas矇 sur module optique d矇cel矇 Intensit矇 100 Pr矇servation 50

Details

o Noise reduction prime luminance 40 chrominance 100 Basse fr矇quence 75
Pixel Morts 24
o Nettet矇 de loptique Globale 0.00 D矇tails 50 Bokeh 50
o Aberration chromatique Auto Lat矇rales Intensit矇 100 Taille 6 Franges violettes OK
o Masque de nettet矇 nothing

Recadrage

o Horizon 32.75簞
o Recadrage Manuel, Ratio 4/3
o Recroping area of 1943 x 1455 px off 4608 x 3456 px

Post treatment

Tif file edition corel paintshop pro
Sharpness improvement
Improvement of the contrast
Re sizing compatible with Treknature (max 800x800 maximum size 300K)
Publication jpg compression mode : normal - intensity 10 mode YCbCr 1x1 1x1 1x1


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Critiques [Translate]

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2657 W: 278 N: 4873] (19681)
  • [2016-12-28 19:22]

Hello Philippe,
Although the BG appears quite busy due to where it had landed, the dragonfly itself is flawless. Awesome focus and clarity with beautiful natural color tones. A fine looking specimen perfectly displayed. Great job!!
Ron

hello Philippe
une magnifique capture de Libellule, bonne nettet矇, bon rendu des ailes et de la transparence.
Amicalement
Roland

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