Agriosphodrus dohrni
In 3 days ~30% in a week ~60%
Agriosphodrus is a genus with a sole species, A. dohrni, the Japanese assassin bug. It is a species of insect in the family Reduviidae, found in China, Southeast Asia, India and Japan. It lives in trunks of various trees near human habitation, like parks and roadsides, mostly found on poplar, willow and tree of heavens. Despite its common name, the species is not native to Japan, where it was first recorded in 1930 and is considered invasive.
Agriosphodrus is a monotypic genus of assassin bugs in the subfamily Harpactorinae. A second species formerly assigned to Agriosphodrus, A. perelegans, found in Vietnam, was moved to the genus Cosmosycanus in 2004. This large assassin bug can reach body lengths of up to 25 mm (99 in) in females and up to 20 (0.81 in) in males. It features a glossy black body with white wax spots along their sides. They are covered in long, upright hairs, accendet by pale to dark yellow spots along its head and the edge of its flared abdomen. Females display a red tip at the end of thei abdomen, while males have a red patch on their lower belly.
The life cycle of Agriosphodrus dohrni... 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 a Japanese Assassin Bug sighting in Tokyo on a given day, based on 358 verified sightings from GBIF citizen-science data. It is the 40th most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
April and May
In those months about 20% of wildlife watchers report a Japanese Assassin Bug in Tokyo on a given day, against under 5% in July, the lowest month.
6th of 7
Of the 7 cities where we can rate Japanese Assassin Bug sightings, Tokyo ranks 6th at about 10%. The best odds are in Xi'an (China, about 20%), Nagoya (Japan, about 20%) and Sendai (Japan, about 20%).
GBIF citizen-science records
It is estimated from how often the Japanese Assassin Bug is recorded against all the insects logged in Tokyo (358 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.
