Gomphurus externus
In 3 days ~10% in a week ~20%
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.
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| # | 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 Austin on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 1106th most-seen of the 1624 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
April
In that month about 10% of wildlife watchers report a Plains Clubtail in Austin on a given day, against under 5% in May to March, the lowest months.
Yes
Of the 2 cities where we can rate Plains Clubtail sightings, Austin has the highest daily chance: under 5%. Next come Dallas (United States, under 5%).
Same family: Gomphidae
The closest relatives of the Plains Clubtail that you can see in Austin (family Gomphidae, Clubtails) are Broad-Striped Forceptail (about 10%) and Eastern Ringtail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Plains Clubtail is recorded against all the insects logged in Austin (11 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.
