Danaus gilippus
In 3 days ~50% in a week ~80%
The queen butterfly (Danaus gilippus) is a North and South American butterfly in the family Nymphalidae with a wingspan of 80–85 mm (3+1⁄8–3+3⁄8 in). It is orange or brown with black wing borders and small white forewing spots on its dorsal wing surface, and reddish ventral wing surface fairly similar to the dorsal surface. The ventral hindwings have black veins and small white spots in a black border. The male has a black androconial scent patch on its dorsal hindwings. It can be found in meadows, fields, marshes, deserts, and at the edges of forests.
This species is possibly a close relative to the similarly colored soldier butterfly (or tropical queen, D. eresimus), in any case, it is not close to the plain tiger (D. chrysippus, African queen) as was long believed. There are seven subspecies.
Females lay one egg at a time on larval host plants. Larvae use these plants as a food source, whereas adult butterflies feed mainly on nectar from flowers. Unpalatability to avian predators is a feature of the butterfly; however, its level is highly variable. Unpalatability is correlated with the level of cardenolides obtained via the larval diet, but other compounds like alkaloids also play a part in promoting distastefulness.
Males patrol to search for females, who may mate up to 15 times a day. Male organs called hair-pencils play an important role in courtship, with males with lower hair-pencil counts being selected against. These hair-pencils may be involved in releasing pheromones during courtship that could attract female mates. Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Phoenix | 🇺🇸 United States | |
| 2 | San Antonio | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Mesa | 🇺🇸 United States | |
| 5 | Ciudad Juárez | 🇲🇽 México | |
| 6 | Monterrey | 🇲🇽 México | |
| 7 | Dallas | 🇺🇸 United States | |
| 8 | Torreón | 🇲🇽 México | |
| 9 | León | 🇲🇽 México | |
| 10 | San Luis Potosí | 🇲🇽 México |
Possible
About 20% of wildlife watchers report a Queen sighting in Ciudad Juárez on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 9th most-seen of the 49 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report a Queen in Ciudad Juárez on a given day, against under 5% in February–March and September–December, the lowest months. That is one of Ciudad Juárez's wettest months, with about 50 mm of rain against 5 mm in April.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Queen sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 26
Of the 26 cities where we can rate Queen sightings, Ciudad Juárez ranks 5th at about 20%. The best odds are in Phoenix (United States, about 40%), San Antonio (United States, about 30%) and Austin (United States, about 30%).
GBIF citizen-science records
It is estimated from how often the Queen is recorded against all the insects logged in Ciudad Juárez (15 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.
