Andrena barbara, f, back ,Prince Georges Co., MD_2018-05-16-16.11

Descrição:

Regionally common to sometimes even abundant, this is one of the larger Andrena of the spring. It can occur in almost any habitat, gathering pollen from a wide variety of the hugely abundant pollen and nectar sources that occur in Woodlands and surrounding scrub lands. While it doesn't show that well in these pictures, there is often just a slight glint of violet metallic sheen to its abdominal segments. In the picture of the face of this species, you can see quite well the slight indentations that make up the facial fovea, why these features are important enough to occur in almost every Andrena species is unknown and why they are aligned with small tiny hairs is also unknown. Something for future researchers to investigate. (As if there wasn't enough). Photograph by Greta Forbes. ~~~~~~~~~~{{{{{{0}}}}}}~~~~~~~~~~ All photographs are public domain, feel free to download and use as you wish. Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200 Beauty is truth, truth beauty - that is all Ye know on earth and all ye need to know " Ode on a Grecian Urn" John Keats You can also follow us on Instagram - account = USGSBIML Want some Useful Links to the Techniques We Use? Well now here you go Citizen: Best over all technical resource for photo stacking:www.extreme-macro.co.uk/ Free Field Guide to Bee Genera of Maryland: bio2.elmira.edu/fieldbio/beesofmarylandbookversion1.pdf Basic USGSBIML set up: www.youtube.com/watch?v=S-_yvIsucOY USGSBIML Photoshopping Technique: Note that we now have added using the burn tool at 50% opacity set to shadows to clean up the halos that bleed into the black background from "hot" color sections of the picture. www.youtube.com/watch?v=Bdmx_8zqvN4 Bees of Maryland Organized by Taxa with information on each Genus www.flickr.com/photos/usgsbiml/collections PDF of Basic USGSBIML Photography Set Up: ftp://ftpext.usgs.gov/pub/er/md/laurel/Droege/How%20to%20Take%20MacroPhotographs%20of%20Insects%20BIML%20Lab2.pdf Google Hangout Demonstration of Techniques: plus.google.com/events/c5569losvskrv2nu606ltof8odo or www.youtube.com/watch?v=4c15neFttoU Excellent Technical Form on Stacking: www.photomacrography.net/ Contact information: Sam Droege sdroege@usgs.gov 301 497 5840