Hemigomphus heteroclytus
In 3 days ~10% in a week ~20%
Hemigomphus heteroclytus is a species of dragonfly of the family Gomphidae, known as the stout vicetail. It is a small, black and yellow dragonfly, endemic to eastern Australia, where it inhabits streams that reduce to trickles in summer.
Hemigomphus heteroclytus is similar to Hemigomphus gouldii, the southern vicetail, also found in eastern Australia. The genus name Hemigomphus is derived from the Greek ἡμι- (hēmi, "half"), combined with Gomphus, a genus name derived from the Greek γόμφος (gomphos, "peg" or "nail"), referring to the shape of the male abdomen. The name refers to the close relationship of the genus to Gomphus.
The species name heteroclytus is derived from the Greek ἕτερος (heteros, "other" or "different") and κλυτός (klytos, "renowned", "glorious" or "splendid"), likely referring to the presence of a yellow half-collar, absent in other members of the genus Hemigomphus.
List of Odonata species of Australia Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Springbrook National Park | 🇦🇺 Australia | |
| 3 | Blue Mountains National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brisbane | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Stout Vicetail sighting in Blue Mountains National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 681st most-seen of the 789 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.
March and November–December
In those months about 10% of wildlife watchers report a Stout Vicetail in Blue Mountains National Park on a given day, against under 5% in January–February and April–October, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Stout Vicetail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 3
Of the 3 parks where we can rate Stout Vicetail sightings, Blue Mountains National Park ranks 3rd at under 5%. The best odds are in Lamington National Park (Australia, about 30%) and Springbrook National Park (Australia, about 20%).
GBIF citizen-science records
It is estimated from how often the Stout Vicetail is recorded against all the insects logged in Blue Mountains National Park (8 verified sightings from 2019 to 2026), 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.
