Lethocerus medius
In 3 days ~10% in a week ~20%
Lethocerus medius is a species of giant water bug in the family Belostomatidae. It is found in Central America from northern Panama north throughout Mexico to southern Arizona, New Mexico, and Texas in the United States, and Cuba, Jamaica, the Cayman Islands, and the Bahamas.
They grow up to 49–58 mm for males and 62–63 mm of females. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States | |
| 3 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monterrey | 🇲🇽 México | |
| 2 | San Antonio | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Lethocerus medius sighting in San Antonio on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 327th most-seen of the 697 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.
June, August and October
In those months about 10% of wildlife watchers report a Lethocerus medius in San Antonio on a given day, against under 5% in July, September and November–May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Lethocerus medius sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 cities where we can rate Lethocerus medius sightings, San Antonio ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Monterrey (México, under 5%).
Same order: Hemiptera
The closest relatives of the Lethocerus medius that you can see in San Antonio (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Scarlet Mountain Laurel Mirid (about 10%), Large Milkweed Bug (about 10%) and Oak Catkin Mirid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lethocerus medius is recorded against all the insects logged in San Antonio (20 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.
