Payl:Lasioglossum acuminatum, m, wisconsin, head 2020-08-20-16.31.55 ZS PMax UDR (51132513216).jpg
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DeskripsyonLasioglossum acuminatum, m, wisconsin, head 2020-08-20-16.31.55 ZS PMax UDR (51132513216).jpg |
The Case of the Scimitarian Mandibles. Here is a male Lasioglossum acuminatum (from Wisconsin, thanks Nolan Amon!). L. a. is part of the Big Lasioglossum group. They are all black (no metallic glitterings here) much bigger than than the other groups. For technical reasons they are called the Lasioglossum sensu strictu subgenus, which someone else will explain to you as to why it is Lasioglossum in the "strict sense", but not me. Now, look at those long mandibles. A not uncommon length for L. sensu strictu group males. The females have the usual "I have to do all the work digging the kids home" mandibles that most sensible females in the bee world have, but, really, what use are those long mandibles for you males? They certainly don't dig, in fact they are really just sex machines donating their sperm to progenitzise themselves into future generations. Do they fight with them?...seems both unwieldy and unlikely since I think the females don't have time to watch Lasioglossum gladiator rounds. Perhaps it is a "look at me" sort of thing, where large mandibles (maybe all oiled up?) increase mating opportunities. Interestingly, pattern is absent in most of the other Lasioglossum groups, the males mostly have tiny wittle mandibles, smaller than the females (very reasonable since they don't have to go around digging with them). The exception being a few males in the Hemihalictus subgenus. Why? Why? Why? I have no answer, but are listening to your theories. 16:25, 7 May 2021 (UTC)16:25, 7 May 2021 (UTC){{{{{{0}}}}}}16:25, 7 May 2021 (UTC)16:25, 7 May 2021 (UTC) All photographs are public domain, feel free to download and use as you wish.
We Are Made One with What We Touch and See We are resolved into the supreme air, We are made one with what we touch and see, With our heart's blood each crimson sun is fair, With our young lives each spring impassioned tree Flames into green, the wildest beasts that range The moor our kinsmen are, all life is one, and all is change. - Oscar Wilde
Want some Useful Links to the Techniques We Use? Well now here you go Citizen: Best over all technical resource for photo stacking: <a href="http://www.extreme-macro.co.uk" rel="noreferrer nofollow">www.extreme-macro.co.uk/</a> Art Photo Book: Bees: An Up-Close Look at Pollinators Around the World: <a href="https://www.amazon.com/Bees-Up-Close-Pollinators-Around-World/dp/0760347387/ref=sr_1_1?ie=UTF8&qid=1488851025&sr=8-1&keywords=bees+up+close" rel="noreferrer nofollow">www.amazon.com/Bees-Up-Close-Pollinators-Around-World/dp/...</a> Free Field Guide to Bee Genera of Maryland: <a href="http://bio2.elmira.edu/fieldbio/beesofmarylandbookversion1.pdf" rel="noreferrer nofollow">bio2.elmira.edu/fieldbio/beesofmarylandbookversion1.pdf</a> Basic USGSBIML set up: <a href="https://www.youtube.com/watch?v=S-_yvIsucOY" rel="noreferrer nofollow">www.youtube.com/watch?v=S-_yvIsucOY</a> 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. <a href="https://www.youtube.com/watch?v=Bdmx_8zqvN4" rel="noreferrer nofollow">www.youtube.com/watch?v=Bdmx_8zqvN4</a> Bees of Maryland Organized by Taxa with information on each Genus <a href="https://www.flickr.com/photos/usgsbiml/collections">www.flickr.com/photos/usgsbiml/collections</a> PDF of Basic USGSBIML Photography Set Up:
Excellent Technical Form on Stacking: <a href="http://www.photomacrography.net/" rel="noreferrer nofollow">www.photomacrography.net/</a> Contact information: Sam Droege sdroege@usgs.gov
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Petsa | |
Gigikanan | Lasioglossum acuminatum, m, wisconsin, head_2020-08-20-16.31.55 ZS PMax UDR |
Tagsulat | USGS Bee Inventory and Monitoring Lab from Beltsville, Maryland, USA |
Pagtugot
Public domainPublic domainfalsefalse |
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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This image was originally posted to Flickr by Sam Droege at https://flickr.com/photos/54563451@N08/51132513216. It was reviewed on 7 Mayo 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
7 Mayo 2021
Items portrayed in this file
depicts English
captured with English
Canon EOS 5D Mark III English
exposure time English
0.005 second
f-number English
4.5
focal length English
65 millimetre
ISO speed English
100
instance of English
source of file English
file available on the internet English
20 Agosto 2020
media type English
image/jpeg
checksum English
b7e7853f6bccd24a3d62fab0f5a10abc5a66afe7
data size English
8,119,728 byte
height English
2,908 pixel
width English
3,910 pixel
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Metadata
Ang kining payl adunay dugang nga impormasyon, mahimong nadugang gikan sa digital camera o scanner nga gigamit sa paghimo o pag-digitize niini.
Kon ang payl namodipikar gikan sa orihinal nga estado, ang ubang detalye mamahimong dili moreplek sa namodipikar nga payl.
Camera manufacturer | Canon |
---|---|
Camera model | Canon EOS 5D Mark III |
Exposure time | 1/200 sec (0.005) |
F Number | f/4.5 |
ISO speed rating | 100 |
Date and time of data generation | 14:11, 20 Agosto 2020 |
Lens focal length | 65 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop 22.3 (Windows) |
File change date and time | 21:45, 22 Abril 2021 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 14:11, 20 Agosto 2020 |
APEX shutter speed | 7.643856 |
APEX aperture | 4.33985 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing |
DateTime subseconds | 55 |
DateTimeOriginal subseconds | 55 |
DateTimeDigitized subseconds | 55 |
Color space | Uncalibrated |
Focal plane X resolution | 3,942.5051546392 |
Focal plane Y resolution | 3,950.6172839506 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Scene capture type | Standard |
Serial number of camera | 412023000848 |
Lens used | MP-E65mm f/2.8 1-5x Macro Photo |
Rating (out of 5) | 0 |
Date metadata was last modified | 17:45, 22 Abril 2021 |
Unique ID of original document | 748EEB680222D7145D281E6DC5800F00 |