Cordulegaster diadema
In 3 days ~10% in a week ~20%
Cordulegaster diadema, commonly known as the Apache spiketail, is a species of dragonfly in the family Cordulegastridae. The mature adult is usually 74-88 millimeters long. It ranges from southwestern United States to Mexico and Costa Rica. The back of the head is yellow to brown with yellow to black hairs, though some have been reported with a black head with white hairs. The first proximal segment of the legs are yellow. The thorax has two lateral stripes with a yellow stripe between them. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mexico City | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report an Apache Spiketail sighting in Mexico City on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 352nd most-seen of the 557 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Apache Spiketail in Mexico City on a given day, so our monthly data shows no clear season.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Apache Spiketail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Mexico City, in our data
Mexico City is the only city on Wallace's Line with enough records to rate Apache Spiketail sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Odonata
The closest relatives of the Apache Spiketail that you can see in Mexico City (order Odonata, Dragonflies and Damselflies) are Cardinal Meadowhawk (about 10%), Blue-Eyed Darner (about 10%) and Variegated Meadowhawk (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Apache Spiketail is recorded against all the insects logged in Mexico City (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.
