Amyna axis
In 3 days ~10% in a week ~20%
Amyna axis, the oriental eight-spot, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It occurs in Africa, temperate Asia, Australia and the Cook Islands. The New World population of Amyna axis was determined to be a separate species, Amyna stricta, in 2015.
The moth migrates north each year in late summer and fall. The larvae feed on Amaranthus, Croton, Celosia, Digera, Helianthus, Chenopodium, Spinacia, Ipomoea, Ricinus, Arachis, Crotalaria, Medicago, Phaseolus, Hibiscus, Cardiospermum, Solanum, Corchorus and Parasponia species.
It is an irregular minor pest of mung beans (Vigna radiata), black-eyed peas (Vigna unguiclata), lucerne (Medicago sativa) and soy beans (Glycine max). Its prevalence may be under reported due to the resemblance of the caterpillar with those of Chrysoieixis species.
The larvae are thin bodied and have faint white stripes and two pairs of ventral prolegs. At low densities of groups, caterpillars are pale green. Among caterpillars at high densities, there are higher frequencies of melanistic phenotypes. The degree of blackening varied widely, ranging from individuals... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Daintree National Park | 🇦🇺 Australia | |
| 2 | Kruger National Park | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report an Oriental Eight-Spot sighting in Tokyo on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 684th most-seen of the 1013 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 Oriental Eight-Spot in Tokyo on a given day, so our monthly data shows no clear season.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Oriental Eight-Spot sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 cities where we can rate Oriental Eight-Spot sightings, Tokyo ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Durban (South Africa, under 5%).
GBIF citizen-science records
It is estimated from how often the Oriental Eight-Spot is recorded against all the insects logged in Tokyo (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.
