Posts Tagged ‘Prince William Forest Park’
August 3, 2021
The following photos show a small wooden bridge across Quantico Creek, near Burma Road in Prince William Forest Park, Prince William County, Virginia USA.
If you like bridges that bounce when you walk across them, then this is the bridge for you! I prefer bridges that are rock-solid.
Related Resource: All posts in my blog tagged with the word “bridge.”
Copyright © 2021 Walter Sanford. All rights reserved.
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Tags:bridge, Prince William County, Prince William Forest Park, Quantico Creek, Virginia
Posted in Aperture, digital photography, landscapes, Lightroom, Panasonic DMC-FZ300, photowalking | 3 Comments »
June 24, 2019
A Dragonhunter dragonfly (Hagenius brevistylus) was spotted at South Fork Quantico Creek along “South Valley Trail,” Prince William Forest Park, Prince William County, Virginia USA.
This individual is a female, although it is difficult to see some critical field marks from the viewpoint in the preceding photo. Thanks to Michael Boatwright, founder and administrator of the Virginia Odonata Facebook group, for confirming my tentative identification of the gender.
Copyright © 2019 Walter Sanford. All rights reserved.
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Tags:Dragonhunter dragonfly, Family Gomphidae (Clubtails), female, Hagenius brevistylus, Prince William Forest Park
Posted in Aperture, Canon 430EX II Speedlite, digital photography, dragonflies, Lightroom, natural science, Panasonic DMC-FZ300, Photoshop, photowalking, wildlife photography | 3 Comments »
December 28, 2018
The anticipation of the hunt and the thrill of discovery — the adrenalin rush from finding the target species is ever more elusive as one gains experience and expertise. Accordingly, the number of additions to my Life List is fewer year after year.
Editor’s Note: List items are presented in chronological order, based upon the date of the spotting.
Twin-spotted Spiketail
A Twin-spotted Spiketail dragonfly (Cordulegaster maculata) was spotted at an undisclosed location in Fairfax County, Virginia USA. This individual is a male.
Brown Spiketail (male)
A Brown Spiketail dragonfly (Cordulegaster bilineata) was spotted at an undisclosed location in Fairfax County, Virginia USA. I saw a female Brown Spiketail on 09 May 2013. This individual is one of several males that I spotted on 07 and 11 May 2018.
Gray Petaltail
A Gray Petaltail dragonfly (Tachopteryx thoreyi) was spotted at a forest seep. This individual is a male with a malformed abdomen that I nicknamed “Bender.”
Sable Clubtail
A Sable Clubtail dragonfly (Stenogomphurus rogersi) was spotted perched near a small stream located in Fairfax County, Virginia USA. This individual is a male.
Citrine Forktail damselfly (male)
A Citrine Forktail damselfly (Ischnura hastata) was spotted during a stream-walk along South Fork Quantico Creek in Prince William Forest Park (PWFP), Prince William County, Virginia USA. This individual is a male.
Next post: Recognition in 2018.
Copyright © 2018 Walter Sanford. All rights reserved.
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Tags:Brown Spiketail dragonfly, Citrine Forktail damselfly, Cordulegaster bilineata, Cordulegaster maculata, forest seep, Gray Petaltail dragonfly, Ischnura hastata, male, malformed, Occoquan Regional Park, Prince William Forest Park, Sable Clubtail dragonfly, South Fork Quantico Creek, Stenogomphurus rogersi, Tachopteryx thoreyi, Twin-spotted Spiketail dragonfly
Posted in Aperture, Canon 580EX Speedlite, damselflies, digital photography, dragonflies, natural science, Panasonic DMC-FZ150, photowalking, wildlife photography | Leave a Comment »
August 5, 2018
A mating pair of Stream Bluet damselflies (Enallagma exsulans) was spotted during a stream-walk along South Fork Quantico Creek in Prince William Forest Park (PWFP), Prince William County, Virginia USA. This pair is in tandem.
After copulation, Stream Bluet engages in a form of guarding behavior known as “contact guarding,” in which the male and female fly “in tandem” to egg-laying sites. Contact guarding is used by some species of odonates to prevent aggressive males from hijacking the female.
Female E. exsulans is polymorphic, including two morphs: green or blue thorax; abdomen similar to male for both morphs. The female shown in the preceding photo is a green morph.
Look closely at the posterior end of the female’s abdomen. All female damselflies (and some species of dragonflies) use an ovipositor to insert fertilized eggs into vegetation (endophytic oviposition). Notice the white spheroid at the tip of her ovipositor. That’s either a single egg or egg cluster/mass, probably the former.
Now look at the male. He appears to be “recharging” for mating again: Sperm is transferred from the genital opening under abdominal segment nine (S9) to the secondary genitalia located under abdominal segment two (S2). Remember all dragonflies and damselflies have a 10-segmented abdomen.
Editor’s Notes
Thanks to my good friend Mike Boatwright, administrator of the Virginia Odonata Facebook group, for verifying my tentative identification of the species of damselfly. Also thanks to Sue Gregoire, Kestrel Haven Migration Observatory, for sharing her expert opinion that my photo shows a single egg at the tip of the female’s ovipositor.
Copyright © 2018 Walter Sanford. All rights reserved.
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Tags:adult female, adult male, American Bluets, contact guarding, Enallagma exsulans, Family Coenagrionidae, in tandem, mating pair, Narrow-winged Damselflies, ovipositor, Prince William Forest Park, South Fork Quantico Creek, Stream Bluet damselfly
Posted in Aperture, Canon 580EX Speedlite, damselflies, digital photography, education, natural science, Panasonic DMC-FZ150, photowalking, wildlife photography | Leave a Comment »
June 30, 2018
A Black-shouldered Spinyleg dragonfly (Dromogomphus spinosus) was spotted during a stream-walk along South Fork Quantico Creek in Prince William Forest Park (PWFP), Prince William County, Virginia USA. This is my first-of-year sighting of this species.
This individual is a male, as indicated by his terminal appendages.
Copyright © 2018 Walter Sanford. All rights reserved.
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Tags:Black-shouldered Spinyleg dragonfly, Dromogomphus spinosus, Family Gomphidae (Clubtails), male, Prince William Forest Park, South Fork Quantico Creek, terminal appendages
Posted in Aperture, Canon 580EX Speedlite, digital photography, dragonflies, natural science, Panasonic DMC-FZ150, photowalking, wildlife photography | 1 Comment »
June 28, 2018
A Citrine Forktail damselfly (Ischnura hastata) was spotted during a stream-walk along South Fork Quantico Creek in Prince William Forest Park (PWFP), Prince William County, Virginia USA. This individual is a male, as indicated by his coloration and terminal appendages.
Citrine Forktail is the smallest species of damselfly in North America. Maybe that explains why it took so long to add Citrine to my life list of odonates!
Every reference I have read says Citrine habitat is lentic, that is, it prefers ponds and lakes rather than the lotic habit where I found the individual shown above. I wish I had carried one of my camera kits for macro photography, but I didn’t expect to see Citrine along a mid-size stream.
Copyright © 2018 Walter Sanford. All rights reserved.
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Tags:Citrine Forktail damselfly, Family Coenagrionidae, Ischnura hastata, lentic, lotic, male, Narrow-winged Damselflies, Prince William Forest Park, South Fork Quantico Creek, terminal appendages
Posted in Aperture, Canon 580EX Speedlite, damselflies, digital photography, natural science, Panasonic DMC-FZ150, photowalking, wildlife photography | 1 Comment »
May 25, 2018
The adult flight period for Blue Corporal dragonfly (Ladona deplanata) is from March 09 to July 09, according to records for the Commonwealth of Virginia maintained by Dr. Steve Roble; records for Northern Virginia maintained by Kevin Munroe show the flight period is from the second week in April to the first week in June. In my experience, the third week in May is late for Blue Corporal.
Meadowood Recreation Area
A single Blue Corporal dragonfly was spotted perched on the dock at Hidden Pond, Meadowood Recreation Area (MRA), Fairfax County, Virginia USA. This individual is a mature male, as indicated by his terminal appendages and dark blue pruinescence covering the body.
Contrast the appearance of a mature male Blue Corporal with teneral males of the same species spotted on 26 April 2018 at Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.
Prince William Forest Park
Two days later, another mature male Blue Corporal was spotted perched on the railing of an observation platform at a small pond located in Prince William Forest Park, Prince William County, Virginia USA.
Editor’s Notes: Dr. Steve Roble is a zoologist at the Virginia Department of Conservation and Recreation, Division of Natural Heritage. Kevin Munroe is the former manager of Huntley Meadows Park, Fairfax County, Virginia.
Copyright © 2018 Walter Sanford. All rights reserved.
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Tags:Blue Corporal dragonfly, Family Libellulidae (Skimmers), Hidden Pond, Ladona deplanata, mature male, Meadowood Recreation Area, Prince William Forest Park, pruinescence, terminal appendages
Posted in Aperture, Canon 580EX Speedlite, digital photography, dragonflies, education, natural science, Panasonic DMC-FZ150, wildlife photography | Leave a Comment »