Spodoptera eridania
In 3 days ~10% in a week ~20%
Spodoptera eridania (Southern armyworm) is a moth that is known to be a pest. They are one of the most important defoliators in the tropical and subtropical regions of the western hemisphere that feed heavily on plants while they are young, often resulting in skeleton leaves on their food plants. They are also heavy feeders on tomato in Florida. There is a lot of development in producing pesticides against the S. eridania, specifically a neem-based pesticide that can result in smaller and prolonged development. The wingspan is 33–38 mm. Adults are on wing year-round. The larvae feed on various weeds but prefer Amaranthus species and Phytolacca americana.
The S. eridania is found in North America (the southern US states as far west as Kansas and New Mexico), through the Caribbean and Central America into South America (through Brazil to Argentina). It has been introduced Nigeria and Cameroon.
The plants that the armyworm feeds on include a wide range of important vegetables, fruits, and crops. The vegetables include beet, cabbage, carrot, collard, cowpea, eggplant, okra, pepper, potato, sweet potato, tomato, and watermelon... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Houston | 🇺🇸 United States | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | São Paulo | 🇧🇷 Brazil | |
| 4 | Miami | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Southern Armyworm Moth sighting in Buenos Aires on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 358th most-seen of the 558 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 a Southern Armyworm Moth in Buenos Aires on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Southern Armyworm Moth sightings, Buenos Aires ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Houston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Southern Armyworm Moth is recorded against all the insects logged in Buenos Aires (12 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.
