Gomphurus externus
In 3 days ~10%
Gomphurus externus, the plains clubtail, is a species of dragonfly in the family Gomphidae. The plains clubtail is a medium to large dragonfly with a length of 2 1/16 to 2 3/8 inches (52 to 60 mm). The base of this dragonfly is brownish black. Its face is marked with yellow. The top of its thorax behind its head is marked with a parallel pair of yellow stripes, and every side of the thorax is marked with several diagonal yellow stripes. The base of its wings may be clouded with yellow where they attach to its body. Its abdomen is black and is marked with a line of yellow dashes along the top. As with other clubtails, the segments at the tip of its abdomen are wider than the rest.
The nymph of the plains clubtail is a large in size with a maximum length of 1 5/16 inches (33 mm). Its abdomen is thick for most of its length, then tapers to a rounded point at the end of segment ten. On each side of abdominal segments six through nine, there is a single, rear-facing spine. This species has no dorsal hooks.
United States: (Arkansas • Colorado • Iowa • Idaho • Illinois • Indiana • Kansas • Kentucky • Maine • Michigan... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Plains Clubtail sighting in Dallas on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1307th most-seen of the 1412 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Plains Clubtail in Dallas on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Plains Clubtail sightings, Dallas ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Plains Clubtail is recorded against all the insects logged in Dallas (5 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
