Alchisme grossa
In 3 days ~30% in a week ~50%
Alchisme grossa is a species of treehopper. Membracids are defined by their pronotum, which has a variety of functions. Alchisme grossa are a subsocial species found in neotropical South and Central America. They can live on a variety of solanaceous species, such as Brugmansia suaveolens and Solanum ursinum. This species of treehopper was discovered in 1846.
Alchisme grossa has a wide and short head with a smooth pronotum, many lacking seta. It can be colored yellow-green. A. grossa shows a prominent pronotum. Its uses include sensorial, crypsis, and protection against predators and parasitoids. Females tend to have a larger pronotum than males, indicating its importance for offspring and egg mass protection. Individuals with a larger pronotum, which correlates to a larger body size, have a greater fitness and can benefit females by driving predators and herbivorous competitors away. Having larger suprahumeral horns could deter predators away by disguising the individual as plant thorns. Individuals observed on the host plant Brugmansia suaveolens, which does not have thorns, were found to have shorter suprahumeral horns.
In A. grossa, nymphs tend to be aposematic and... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Alchisme grossa sighting in Quito on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 53rd most-seen of the 83 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
January and February
In those months about 20% of wildlife watchers report an Alchisme grossa in Quito on a given day, against under 5% in July–September and November–December, the lowest months. Those are among Quito's wettest months, with about 140 mm of rain a month against 25 mm in August.
Yes
Of the 2 cities where we can rate Alchisme grossa sightings, Quito has the highest daily chance: about 10%. Next come Bogota (Colombia, under 5%).
GBIF citizen-science records
It is estimated from how often the Alchisme grossa is recorded against all the insects logged in Quito (11 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.
