Phyllomorpha laciniata
In 3 days ~20% in a week ~40%
Phyllomorpha laciniata (the golden egg bug) is a species of coreid bug, and one of only two members of the genus Phyllomorpha. They are specific to the host plant Paronychia argentea. It is noted for its habit of laying its eggs on other members of its species, who act as mobile nests (oviposition substrate). These co-opted egg carriers provide more protection for the eggs than laying them at static locations on plant leaves or stems. While Phyllomorpha laciniata females can and do lay eggs on their host plant, the availability of suitable egg carriers seems to stimulate the deposition of mature eggs. In the golden egg bug, all females carry other female’s eggs, and most males carry eggs they have not fertilized.
This species was formally described by Charles Joseph de Villers in 1789, under the name Cimex laciniatus. "species Phyllomorpha laciniata (Villers, 1789)". Coreoidea Species File (Version 5.0/5.0). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 4 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Madrid | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a Golden Egg Bug sighting in Cévennes National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 359th most-seen of the 996 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.
May to October
In those months about 10% of wildlife watchers report a Golden Egg Bug in Cévennes National Park on a given day, against under 5% in November to April, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Golden Egg Bug sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 4
Of the 4 parks where we can rate Golden Egg Bug sightings, Cévennes National Park ranks 2nd at about 10%. The best odds are in Sierra Nevada National Park (Spain, about 20%).
Same family: Coreidae
The closest relatives of the Golden Egg Bug that you can see in Cévennes National Park (family Coreidae, Leaf-footed Bugs) are Dock Bug (about 20%), Western Conifer Seed Bug (about 20%) and Box Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Golden Egg Bug is recorded against all the insects logged in Cévennes National Park (20 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.
