Liometopum luctuosum
In 3 days ~20% in a week ~40%
Liometopum luctuosum is a species of ant in the subfamily Dolichoderinae. Liometopum luctuosum is often mistaken for carpenter ants (Camponotus spp.) by homeowners and pest management professionals. This mistaken identity is due to morphological and behavioral characteristics they share with carpenter ants; namely polymorphic workers, a smooth convex thoracic profile, and the tendency to excavate wood. L. luctuosum are also often confused with Tapinoma sessile since they have the same coloration, are similar in size, and produce an alarm pheromone with a very similar odor. Consequently, their importance as structural pests may be greatly under reported, especially in California, Oregon, and Washington, United States.
Creighton (1950) reclassified it as a subspecies of Liometopum occidentale. Liometopum luctuosum has been reported at elevations as low as 59 m, but is typically found at elevations... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grand Canyon National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Liometopum luctuosum sighting in Grand Canyon National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 60th most-seen of the 143 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March to July
In those months about 10% of wildlife watchers report a Liometopum luctuosum in Grand Canyon National Park on a given day, against under 5% in August to February, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Liometopum luctuosum sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Liometopum luctuosum sightings, Grand Canyon National Park has the highest daily chance: about 10%. Next come Big Bend National Park (United States, about 10%).
Same family: Formicidae
The closest relatives of the Liometopum luctuosum that you can see in Grand Canyon National Park (family Formicidae, Ants) are Bicolored Carpenter Ant (about 10%) and Western Harvester Ant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Liometopum luctuosum is recorded against all the insects logged in Grand Canyon National Park (12 verified sightings from 2019 to 2026), 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.
