Black-tipped Darner (Aeshna tuberculifera)

Uploaded 23-Aug-14

Taken 23-Aug-14

Visitors 18

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Photo Info

Dimensions1500 x 998

Original file size1023 KB

Image typeJPEG

Color spacesRGB

Date taken23-Aug-14 09:51

Date modified23-Aug-14 19:17

Shooting Conditions

Camera makeNIKON CORPORATION

Camera modelNIKON D300S

Focal length320 mm

Focal length (35mm)480 mm

Max lens aperturef/5.7

Exposure1/100 at f/14

FlashNot fired

Exposure bias-1/3 EV

Exposure modeAuto

Exposure prog.Aperture priority

ISO speedISO 560

Metering modeCenter-weighted average

Digital zoom1x

Aeshna tuberculifera

Lance-tipped Darner (Aeshna constricta) male Power Lines Sherborn MA August 27, 2013
To quote Ed Lam from a Facebook note of his on Gerry Teal's post of August 7, 2014 "Abdominal segment 2 has a diamond-shaped mark on top which better matches Lance-tipped. That mark is usually more linear in Black-tipped. Also [with regards to wing venation] the hindwing anal triangle has three cells. Lance-tipped [and Shadow Darner] has three cells while Black-tipped [Green-striped and Canada Darners] have two."