Blaptica dubia
In 3 days ~10% in a week ~20%
Blaptica dubia, the dubia roach, orange-spotted roach, Guyana spotted roach, or Argentinian wood roach, is a medium-sized species of cockroach which grows to around 40–45 mm (1.6–1.8 in). They are sexually dimorphic; adult males have full wings covering their body, while females have only tiny wing stubs - their tegmina (forewings) being around a fourth of their body length. Adults are dark brown to black with somewhat lighter orange spot/stripe patterning sometimes visible only in bright light. Coloration differs slightly with environment and diet from one colony to another.
Blaptica dubia are partially ovoviviparous, giving birth to live young after eggs hatch inside the female, and can give birth to 20 to 40 nymphs per month under favorable conditions. The dubia cockroach is found in southern parts of South America. Documented specimens have been found in Brazil, Argentina, and Uruguay.
While rarely known to fly, adult males have fully developed wings and pigmented musculature typical of cockroaches able to meet the rapid energy requirements of sustained flight. In laboratory test launches from a ramp 2.5 m high, adult male B. dubia... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montevideo | 🇺🇾 Uruguay | |
| 2 | Buenos Aires | 🇦🇷 Argentina |
Rare
Under 5% of wildlife watchers report a Dubia Cockroach sighting in Buenos Aires on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 392nd most-seen of the 558 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Dubia Cockroach in Buenos Aires on a given day, so our monthly data shows no clear season.
2nd of 2
Of the 2 cities where we can rate Dubia Cockroach sightings, Buenos Aires ranks 2nd at under 5%. The best odds are in Montevideo (Uruguay, about 10%).
GBIF citizen-science records
It is estimated from how often the Dubia Cockroach is recorded against all the insects logged in Buenos Aires (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.
