Posts Tagged ‘Calico Pennant dragonfly’

Calico Pennant dragonfly (female)

August 13, 2018

A Calico Pennant dragonfly (Celithemis elisa) was spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.

10 AUG 2018 | Occoquan Bay NWR | Calico Pennant (female)

This individual is a female, as indicated by her terminal appendages.

Adult flight period

The adult flight period  for Calico Pennant is from 11 May to 23 September (peaks in June-July), according to records for Northern Virginia maintained by Kevin Munroe, former manager at Huntley Meadows Park. In my experience, mid-August is past peak in Northern Virginia so I was happy to see a beautiful Calico female.

According to records for the Commonwealth of Virginia maintained by Dr. Steve Roble, a zoologist at the Virginia Department of Conservation and Recreation, Division of Natural Heritage, 26 April to 27 October is the adult flight period for Calico Pennant.

Copyright © 2018 Walter Sanford. All rights reserved.

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More Calico Pennant exuvia composite images

April 9, 2018

The Backstory

Calico Pennant dragonfly (Celithemis elisa) evuvia was collected by Sue and John Gregoire at Kestrel Haven Migration Observatory. For the last 13 years, Sue and John have closely monitored the annual emergence of a large population of C. elisa at their farm pond.

The preceding image is a composite of 12 photos; the following image is a composite of 10 photos. My goal is to shoot the fewest number of photos (using a relatively small aperture such as f/18) that will show the entire specimen in focus when the photo set is focus-stacked to create a composite image. The number of photos required for each composite image varies depending upon the f/stop and the subject, among other factors.

Tech Tips

The following equipment was used to shoot all of the photos for both composite images: Canon EOS 5D Mark II digital camera, in manual mode; Kenko 20mm macro automatic extension tubeCanon EF100mm f/2.8L Macro lens (set for manual focus); Canon MT-26EX-RT Macro Twin Lite set for “Master” mode; and Canon 580 EX- and Canon 580EX II Speedlites in “Slave” mode.

Adobe Photoshop CC 2017 was used to create the composite image by “round-tripping” with Apple Aperture.

Copyright © 2018 Walter Sanford. All rights reserved.

Calico Pennant exuvia composite image

April 7, 2018

Sometime during the late 50s or early 60s, my father bought a new car. That was a big deal in our family. My family was poor, although I didn’t realize it when I was a young boy. We couldn’t afford a new car very often. Anyway, I don’t remember many details about the car other than it was a sky blue Plymouth with tail fins. Big tail fins! For some reason, the following odonate exuvia reminds me of the tail fins on my father’s Plymouth automobile. Go figure.

The Backstory

A Calico Pennant dragonfly (Celithemis elisa) evuvia was collected by Sue and John Gregoire at Kestrel Haven Migration Observatory. For the last 13 years, Sue and John have closely monitored the annual emergence of a large population of C. elisa at their farm pond.

Tech Tips

The preceding image is a composite of 11 photos taken using the following equipment: Canon EOS 5D Mark II digital camera, in manual mode; Kenko 20mm macro automatic extension tubeCanon EF100mm f/2.8L Macro lens (set for manual focus); Canon MT-26EX-RT Macro Twin Lite set for “Master” mode; and Canon 580 EX- and Canon 580EX II Speedlites in “Slave” mode.

Adobe Photoshop CC 2017 was used to create the composite image by “round-tripping” with Apple Aperture, including a few detours in my experimental workflow. I made a lot of mistakes along the way. For example, I was so focused on the technical side of the photoshoot that I never noticed the specimen isn’t posed well. (I wish there were some space between the front leg and the face mask.) Nonetheless, I think the final output turned out OK.

Copyright © 2018 Walter Sanford. All rights reserved.

New discoveries in 2017 (odonates)

December 28, 2017

There’s always more to discover/learn! My odonate-related new discoveries in 2017 are presented in reverse-chronological order.

Fine-lined Emerald dragonfly

A Fine-lined Emerald dragonfly (Somatochlora filosa) was spotted at Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is one of several males spotted during a period of a week-or-so in mid-September 2017.

Immature male Calico Pennant

20 JUN 2017 | OBNWR | Calico Pennant (immature male)

A Calico Pennant dragonfly (Celithemis elisa) was spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is an immature male. Notice its coloration is similar to female Calico Pennants.

Allegheny River Cruiser dragonfly

An Allegheny River Cruiser (Macromia alleghaniensis) was netted by Mike Blust at Hardware River Wildlife Management Area, Fluvanna County, Virginia USA. This individual is a male.

Harpoon Clubtail dragonfly

09 JUN 2017 | Highland County, VA | Harpoon Clubtail (male)

A Harpoon Clubtail dragonfly (Phanogomphus descriptus) was spotted at “Straight Fork,” Highland County, Virginia USA. This individual is a male. Sincere thanks to fellow Virginians Karen Kearney and Mike Boatwright for guiding me to this unique high-elevation habitat.

It’s worth noting that I saw two more new species during the same trip: Riffle Snaketail (Ophiogomphus carolus); and Dot-tailed Whiteface (Leucorrhinia intacta).

Those who know me well are familiar with one of many “Walterisms”: “I haven’t ‘seen’ something until I have photographed it.” My rationale is two-fold: 1) A photograph verifies a sighting. 2) The detail visible in a good photograph exceeds the acuity of the human eye. Suffice it to say I saw two other species but haven’t seen them. Makes sense to me!

Swift River Cruiser dragonfly

A Swift River Cruiser dragonfly (Macromia illinoiensis) was spotted at Riverbend Park, Fairfax County, Virginia USA. This individual is an emergent/teneral female.

Spine-crowned Clubtail dragonfly

A Spine-crowned Clubtail dragonfly (Hylogomphus abbreviatus) spotted along Bull Run at Hemlock Overlook Regional Park, Fairfax County, Virginia USA. This individual is a male. A female was spotted on the same day at a nearby location.

Epitheca cynosura exuvia

A Common Baskettail dragonfly (Epitheca cynosura) exuvia was collected at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.

Epitheca princeps exuvia

05 MAR 2017 | Prince Baskettail (Epitheca princeps) | exuvia (face-head)

A Prince Baskettail dragonfly (Epitheca princeps) exuvia was collected from an unknown location. This specimen was on temporary loan from Huntley Meadows Park, Fairfax County, Virginia USA.

Copyright © 2017 Walter Sanford. All rights reserved.

Calico Pennant dragonfly (female)

July 1, 2017

Calico Pennant dragonfly (Celithemis elisa) was spotted during a photowalk at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.

20 JUN 2017 | OBNWR | Calico Pennant (mature female)

This individual is a mature female, as evidenced by her terminal appendages and yellow coloration.

20 JUN 2017 | OBNWR | Calico Pennant (mature female)

In my opinion, the coloration of female Calico Pennants is more attractive than male Calicos.

20 JUN 2017 | OBNWR | Calico Pennant (mature female)

Copyright © 2017 Walter Sanford. All rights reserved.

Calico Pennant dragonflies (males)

June 29, 2017

Several Calico Pennant dragonflies (Celithemis elisa) were spotted during a photowalk at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.

20 JUN 2017 | OBNWR | Calico Pennant (mature male)

These individuals are mature males, as evidenced by their terminal appendages and red coloration.

20 JUN 2017 | OBNWR | Calico Pennant (mature male)

The next photo is my favorite in this set…

20 JUN 2017 | OBNWR | Calico Pennant (mature male)

And the last photo is a close second-favorite.

20 JUN 2017 | OBNWR | Calico Pennant (mature male)

Copyright © 2017 Walter Sanford. All rights reserved.

Calico making the case for claspers

June 27, 2017

A Calico Pennant dragonfly (Celithemis elisa) was spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge (OBNWR), Prince William County, Virginia USA.

Mature adult female Calico Pennants are yellow; mature adult male Calico Pennants are red. So the following individual must be female, right? Wrong!

20 JUN 2017 | OBNWR | Calico Pennant (immature male)

This individual is an immature male, as indicated by his terminal appendages and yellow coloration.

Male dragonflies have three terminal appendages, collectively called “claspers,” that are used to grab and hold female dragonflies during mating: an upper pair of cerci (“superior appendages”); and a lower unpaired epiproct (“inferior appendage”).

20 JUN 2017 | OBNWR | Calico Pennant (immature male)

(See a full-size version of the original photo, without annotation.)

In contrast, female dragonflies have a pair of cerci (superior appendages) that have little or no function.

20 JUN 2017 | OBNWR | Calico Pennant (female)

(See a full-size version of the original photo, without annotation.)

Color can be a deceptive field marker. Immature males appear similar to immature females of the same species (and some mature females) for many types of dragonflies that display sexual dimorphism. This is true for many members of Family Libellulidae (Skimmers), such as Calico Pennant. Terminal appendages may be used to differentiate gender for many species of dragonflies.

20 JUN 2017 | OBNWR | Calico Pennant (immature male)

Related Resource: Odonate Terminal Appendages — single-topic field guides for dragonflies and damselflies featuring both text and annotated photos.

Copyright © 2017 Walter Sanford. All rights reserved.

Unicorns in unexpected places (Part 1)

September 22, 2016

I visited Occoquan Bay National Wildlife Refuge (OBNWR), Prince William County, Virginia USA for the first time on 18 June 2016. I found the Calico Pennant dragonflies (Celithemis elisa) that I was looking for at Painted Turtle Pond; I was surprised when I spotted one or more Unicorn Clubtail dragonflies (Arigomphus villosipes) at the same pond!

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

All of the individuals in this gallery are males, as indicated by their unique terminal appendages: the epiproct is a large “plate” that spans both cerci.

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

Like all male clubtail dragonflies, the hind wings of male Unicorn Clubtails are “indented” near the body; this distinctive field marker isn’t shown well by any of the photos in this gallery except the following shot.

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

The juxtaposition of man-made and natural objects is visually appealing in the next photo.

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

A Unicorn Clubtail dragonfly (Arigomphus villosipes) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Unicorn Clubtail (male)

Related Resources:

Copyright © 2016 Walter Sanford. All rights reserved.

CalicOdonart

August 25, 2016

This post is a retrospective look at a few Odonarty photographs of two male Calico Pennant dragonflies (Celithemis elisa) spotted in mid-June 2016.

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Calico Pennant (male)

Both males were photographed at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge (OBNWR), Prince William County, Virginia USA.

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Calico Pennant (male)

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a male.

18 JUN 2016 | OBNWR | Calico Pennant (male)

Copyright © 2016 Walter Sanford. All rights reserved.

Calico Pennant dragonflies (females)

June 22, 2016

Several Calico Pennant dragonflies (Celithemis elisa) were spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge (OBNWR), Prince William County, Virginia USA.

All of these individuals are females, as indicated by their coloration and terminal appendages.

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a female.

18 JUN 2016 | OBNWR | Calico Pennant (female)

In my opinion, female Calico Pennants are one of the more beautiful dragonflies found in the mid-Atlantic United States.

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a female.

18 JUN 2016 | OBNWR | Calico Pennant (female)

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a female.

18 JUN 2016 | OBNWR | Calico Pennant (female)

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a female.

18 JUN 2016 | OBNWR | Calico Pennant (female)

A Calico Pennant dragonfly (Celithemis elisa) spotted at Painted Turtle Pond, Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA. This individual is a female.

18 JUN 2016 | OBNWR | Calico Pennant (female)

Copyright © 2016 Walter Sanford. All rights reserved.


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