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Closer to home
By the end of May, dragonfly activity finally begins to warm up in the
Northeast. I need reference for quite a few species throughout the region
so from my home in southern New York State I have begun to take short
day trips in pursuit of species. Many are not particularly rare, and most
I have seen but not collected or adequately documented. Before this project
I was perfectly satisfied with finding and perhaps getting a picture of
a male. In many
cases I simply never looked for females (which are often harder to find
since they generally do not arrive at the water until they are ready to
breed). As a result I do not get to see or study them very well.
I spent three days
looking for females of Unicorn Clubtail, Arigomphus villosipes.
This is a very common species but I can't even recall seeing a female
in the field while males are easily found perched along pond shores. During
a Bioblitz in northern Westchester Co. NY (sponsored by the Bedford
Audubon Society) I watched as a female suddenly appeared at the pond I
was surveying and was immediately tackled by two males. They tumbled into
the grass but before I could reach them, a tandem pair emerged and flew
up a steep hill and into the trees. I waited along with a half dozen male
Unicorn Clubtails but never did see her come down to lay her eggs that
day and I still need to catch one.
I was more fortunate looking for the other local Arigomphus species,
furcifer, the Lilypad Clubtail. Males were again plentiful at one
of my favorite spots, Lily Lake in Rockland Co. NY but females were scarcer.
I flushed up a couple of females in nearby vegetation and watched helplessly
as they flew away from me. I finally caught one foraging along a trail.
Out west in Sussex
Co. NJ, I collected Spine-crowned Clubtails, Gomphus abbreviatus,
finding numerous males and females along a river bank. I spied another
female in the grass and almost passed her up thinking it was just another
Spine-crowned. To quote accomplished odonatologist Carl Cook, "Never
turn down a female," so without really examining her I netted and
collected her. Later that evening as I was photographing and scanning
my specimens, it was suddenly apparent that she was slimmer than the Spine-crowned
Clubtails. Her pattern was similar but her figure and parts were not and
identified her as a Rapids Clubtail, Gomphus quadricolor, and a
female I needed.
However males can be difficult as well. In anticipation of doing the Peterson
dragonfly guide I started to do some local collecting and scanning last
summer. I saw and caught dozens of Clamp-tipped Emeralds, Somatochlora
tenebrosa, all of which were females until I finally caught a lone
male. This year I targeted getting a male Southern Pygmy-Clubtail,
Lanthus vernalis. I have seen this species on a number of streams
in my home county of Westchester, NY but in recent years have had difficultly
locating them. This year I would usually find at least one male per day,
usually up in a tree in a sunny spot by the stream, and watch it fly from
perch to perch until he was gone. Sid Dunkle in Dragonflies through
Binoculars, described them as "unwary," an attribute that
I'm pretty sure to omit in my book. I finally caught a not quite mature
male in a field.
And then there are a couple species I have failed so far to get either
sex. There are a couple of genera that promise to be particularly difficult
to document. Ophiogomphus is one. I have already failed to find
Appalachian Snaketail, Ophiogomphus incurvatus for the year, and
I have only managed to find males of Edmund's and Westfall's Snaketails,
O. edmundo and O. westfalli respectively. I went out to
Morris Co. NJ looking for Brook Snaketail, O. aspersus. As I got
out of the car, a male Snaketail sat on top of a stalk of grass. But he
was gone by time I could assemble my net and I never saw another individual
the rest of the day.
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