Mycalesis anynana
In 3 days ~10% in a week ~30%
Bicyclus anynana (squinting bush brown) is a small brown butterfly in the family Nymphalidae, the most globally diverse family of butterflies. It is primarily found in eastern Africa from southern Sudan to Eswatini. It is found mostly in woodland areas and flies close to the ground. Male wingspans are 35–40 mm and female wingspans are 45–49 mm.
The bush brown is helpful for research because of its ideal size and breeding time. In addition to this, the bush brown is one of many insect species to vary its coloration depending on the season, making it a valuable tool in studying phenotypic plasticity. Wet seasons produce butterflies with large eyespots, while dry seasons have butterflies dull in color.
Male butterflies engage in mud-puddling, which involves taking up nutrients by aggregating on wet soil and dung. Males use pheromones to attract females during courtship. However, courtship in the bush brown is notable for its plasticity: temperature during adult development plays a large role in determining the rate of male courtship as well as the roles of males and females during the courtship process. The bush brown uses its eyespots as a defense against avian predators. In addition, females choose male mates based on their eyespots; in a process known as stabilizing selection, eyespots that are too large or too small are selected against. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Gonarezhou National Park | 🇿🇼 Zimbabwe | |
| 2 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 3 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 4 | Hluhluwe-Imfolozi Park | 🇿🇦 South Africa | |
| 5 | Kruger National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Durban | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Mycalesis anynana sighting in Durban on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 248th 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.
January, May–July and November
In those months about 10% of wildlife watchers report a Mycalesis anynana in Durban on a given day, against under 5% in February–April, August–October and December, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Mycalesis anynana 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 Mycalesis anynana sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Mycalesis anynana is recorded against all the insects logged in Durban (8 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.
