Panstrongylus geniculatus
In 3 days ~40% in a week ~60%
Panstrogylus geniculatus is a blood-sucking sylvatic insect noted as a putative vector of minor importance in the transmission of Trypanosoma cruzi to humans; this is a parasite, which causes Chagas disease. The insect is described as sylvatic; subsisting primarily in humid forests, and is also known to inhabit vertebrate nesting places such as those of the armadillo (dasypus novemcinctus or dasypus), and is also involved in enzootic transmission of T. cruzi to those species. It has wide distribution throughout 16 Latin American countries.
There have been few scientific studies of this particular species because of the low number of collected specimens and difficulties in rearing and maintaining populations in the laboratory. However, currently P. geniculatus is receiving attention as a potential vector of Chagas disease (American trypanosomiasis) due to reports of this species invading the domestic and peridomestic habitats over a vast area: Venezuela, Colombia, Brazil, Peru, Ecuador, and Argentina.
P. geniculatus is apparently in the process of domiciliation, using the same strategies as highly domesticated species like Triatoma infestans and Rhodnius prolixus. This is also the case for other sylvatic triatomine species (Triatominae) that are experiencing similar ecological pressures originating from human disruption of the natural habitat. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 2 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 3 | Manu National Park | 🇵🇪 Peru | |
| 4 | Manuel Antonio National Park | 🇨🇷 Costa Rica | |
| 5 | Soberanía National Park | 🇵🇦 Panama | |
| 6 | Parque Natural Metropolitano | 🇵🇦 Panama |
With luck
About 10% of wildlife watchers report a Panstrongylus geniculatus sighting in Braulio Carrillo National Park on a given day, based on 26 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 73rd most-seen of the 378 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
January–February and June
In those months about 20% of wildlife watchers report a Panstrongylus geniculatus in Braulio Carrillo National Park on a given day, against under 5% in April and October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Panstrongylus geniculatus sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 6
Of the 6 parks where we can rate Panstrongylus geniculatus sightings, Braulio Carrillo National Park ranks 2nd at about 10%. The best odds are in Main Ridge Forest Reserve (Trinidad and Tobago, about 20%).
Same family: Reduviidae
The closest relatives of the Panstrongylus geniculatus that you can see in Braulio Carrillo National Park (family Reduviidae, Assassin Bugs) are Corcia costaricensis (about 10%) and Apiomerus hirtipes (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Panstrongylus geniculatus is recorded against all the insects logged in Braulio Carrillo National Park (26 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.
