Showing posts with label damselflies. Show all posts
Showing posts with label damselflies. Show all posts

Sunday, November 15, 2015

New Mexico Dragonfly Blitz - Day 2

I was immediately intrigued by the idea of an "ode blitz" whereby participants try and find as many species of damselflies and dragonflies as possible in a given area in a given period of time. When I saw the name Kathy Biggs attached to the New Mexico event, I was sold. What surprised me is how many other people showed up. The final attendance was nearly forty naturalists and photographers, none of whom could be reasonably called "amateurs" if you ask me.

"Herparazzi" hovering over Greater Short-horned Lizard

Friday, August 28, we all convened at La Tienda del Sol, a gas station/restaurant in San Lorenzo, on highway 35 just north of its intersection with highway 152. We couldn't even get out of the parking lot before we were all compelled to photograph a cute little Greater Short-horned Lizard. Such is the nature of true naturalists, and we wouldn't trade our susceptibility to distraction for anything.

Greater Short-horned Lizard

It is quite literally a long and winding road to get to Gila Cliff Dwellings National Monument. Highway 35 goes up and down and side to side at the same time over most of its length. This is a very scenic drive, with overlooks here and there.

Gila National Forest overlook on Hwy. 35

Upon reaching the entrance to the monument, we were summoned to view a very large specimen of the Crevice Spiny Lizard, a common species here, clinging to a sheer cliff wall rising from the edge of the parking lot. Glancing at a tree even closer to us, Heidi exclaimed that there was a dragonfly perched in it. Several photos and opinions later, it was determined to be a male Persephone's Darner, Aeshna persephone, a "lifer" species for most of us.

Persephone's Darner

Our destination for the day was not the cliff dwellings, but the West Fork of the Gila River. We had to wade the shallow watercourse, but it was well worth getting wet. Given the high air temperature, it was actually quite refreshing to have one's feet in the cool water.

West Fork of the Gila River

It did not take long to find plenty of dragons and damsels, either. Canyon Rubyspot damselflies, Hetaerina vulnerata, were abundant on overhanging twigs and reeds. A warm spring, branching off the main river, fostered much emergent vegetation through which other damselflies wove in and out in flight.

Male Mexican Forktail damselfly

Mexican Forktails, Ischnura demorsa, were common, but among them were Painted Damsels, Hesperagrion heterodoxum, the males of which were simply spectacular.

Male Painted Damselfly

A larger ode cruised up the narrow spring, and it was determined to be a real surprise: a male Cardinal Meadowhawk, Sympetrum illotum. This is one I tend to think of as more typical of *northern* climates, but yet here it was.

Cardinal Meadowhawk

Back out in the main channel were the river dragons: clubtails, family Gomphidae. All of them were species new to me, and surprisingly easy to get close to with my camera.

Arizona Snaketail

The Arizona Snaketail, Ophiogomphus arizonicus, was pretty easy to identify by its almost solid-green thorax. My favorite was the Serpent Ringtail, Erpetogomphus lampropeltis, with a turquoise thorax.

Serpent Ringtail

Both species like to perch on objects in the middle of the river, or vegetation hanging way out over the river.

Storm clouds gathering

As storm clouds encroached, we made our way back to the parking lot. We'd built up quite an appetite, so lunch was a welcome break. Afterwards we went down the road a little and tried to find a few more species downstream from where we had been earlier. The overcast skies were not helpful, but we did find a male Red Rock Skimmer, Paltothemis lineatipes, perched on the shore. Another member of our party also spied a Western Tiger Beetle, Cicindela oregona.

Male Red Rock Skimmer dragonfly
Western Tiger Beetle

We went our separate ways in the late afternoon, but a few of us stopped at another spot closer to the town of Mimbres, where there is a valve regulating water flow, with a seep running down a cliff face. Public access was not allowed there, but we still spied a Red-spotted Purple butterfly, the entrance to a paper wasp nest, and a couple other insects.

Red-spotted Purple butterfly

Later that evening, we connected with our good friends Dave and Shelley Small, visiting from Massachusetts. They were staying in a lovely rental home in Pinos Altos. There, our attention turned to moths and other nocturnal insects that were attracted to the lights Dave had set up. The most conspicuous creatures were tree crickets, males singing from seemingly everywhere. It was a wonderful, relaxing end to the day.

Tree Cricket male

We were just getting started, though. Next up, the Middle Fork of the Gila River. Stay tuned.

Saturday, October 25, 2014

Another Odonata Record

Earlier this year I was fortunate enough to report a species of dragonfly never before seen in Colorado. Last Monday, October 20, I got lucky again, with a Fremont County record for the Black-fronted Forktail, Ischnura denticollis. This is a type of damselfly in the family Coenagrionidae.

I can only take credit for spotting the insect in the field, along the edge of a backwater pond in John Griffin Regional Park, Cañon City, Colorado. It was clearly a male damselfly, perched on a rock by the shore, with nearby cattails. The area is part of the "Riverwalk" along the Arkansas River. I decided to snap a few pictures, if only because insects in general were few and far between that day. Also, the rock was the steadiest object with the gusty winds that were blowing. Anyway, I didn't think much about the whole encounter, except that I was puzzled by a forktail that did not have the usual requisite blue or green spots (or stripes) on the back of the thorax. Oh, well.

Once we returned home, it was my wife, Heidi, that took it upon herself to look up the diminutive (22-26 mm in body length) creature online and in books we have in our library.

"Hey," she said, "I think that damselfly might be something pretty cool." She had already consulted several resources by this time, and concluded that it was an unusual geographic location, and therefore a potential county record.

I uploaded my own images, cropped them, and posted them on Facebook to group pages where I know dragonfly and damselfly experts lurk. Sure enough, it was determined to be a Black-fronted Forktail, a county record, and an exceptionally late date of observation.

Males of this species are pretty easily identified. Besides lacking pale markings on the dorsum (top) of the thorax, the blue on the abdominal segments 8 and 9 is restricted to a spot on the top, instead of a ring around the entire couple of segments. Unfortunately, females are much more difficult to identify, resembling several other forktails.

The late date is perhaps not too much of a surprise because these are oddly long-lived insects as adults, persisting about six weeks in some instances. At least one specimen was shown to have lived 42 days.

The Black-fronted Forktail is a decidedly western species, ranging from southeast Oregon and southwest Idaho through California, Nevada, western Utah, Arizona, and New Mexico. It does not occur in the Cascade, Sierra Nevada, or Rocky Mountains, but creeps north again into eastern Colorado, on out to west Texas, Oklahoma, and Kansas.

Look for adults on the wing at almost any time of the year in the southerly reaches of this forktail's range, but reliably between about April and October just about anywhere else. They hang out around springs, both hot and cold, ponds with lots of emergent vegetation, and even very slow-moving stretches of streams.

Sources: Abbott, J.C. 2006-2014. Odonata Central: an online resource for the distribution and identification of Odonata.
DuBois, Robert. 2010. Dragonflies & Damselflies of the Rocky Mountains. Duluth, MN: Kollath+Stensaas Publishing. 301 pp.
Paulson, Dennis. 2009. Dragonflies and Damselflies of the West. Princeton, NJ: Princeton University Press. 535 pp.