Elattoneura glauca
In 3 days ~10% in a week ~30%
Elattoneura glauca is a species of damselfly in the family Platycnemididae. It is known also as the common threadtail, the grey threadtail or gewone draadstertjie. It is native to the southern half of the African continent, where it is widespread. It lives in shady areas along rivers and streams.
This is a smallish damselfly (wingspan of 40 mm (1.6 in)) which exhibits strong sexual dimorphism. Males have a pale blue thorax with a black lateral stripe. The long, slender abdomen is black, with a while underside, and a pale blue tip. There is a white ring at each joint. The eyes are turquoise.
Females and immature individuals are tan, with a narrow whitish band at each segment. Females have a whitish thorax with thick brown stripes. The eyes are pale and striped with brown bands. They are also larger than the males, with a more robust build. The mottled abdomen is less elongate. Females may easily be confused with Elattoneura frenulata in areas of range overlap.
This species is widely distributed across the southern part of the African continent. It is locally common and may occur in large numbers in suitable habitat. It can be found amongst bushes... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kruger National Park | 🇿🇦 South Africa | |
| 2 | Garden Route National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Durban | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Common Threadtail sighting in Durban on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 224th most-seen of the 401 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
September–October and December–March
In those months about 10% of wildlife watchers report a Common Threadtail in Durban on a given day, against under 5% in April–August and November, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Common Threadtail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Durban, in our data
Durban is the only city on Wallace's Line with enough records to rate Common Threadtail sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Common Threadtail is recorded against all the insects logged in Durban (10 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.
