Cryptamorpha desjardinsi
In 3 days ~20% in a week ~50%
Cryptamorpha desjardinsii, known generally as the Desjardin's beetle or Desjardin's flat beetle, is a species of silvanid flat bark beetle in the family Silvanidae. It was first described by Félix Édouard Guérin-Méneville in 1844 and originally named Psammoechus desjardinsii. It is native to tropical Asia but is now found in many countries in Europe, North America, the Caribbean, and Oceania including in Australia and New Zealand.
A small beetle with regular black markings on the elytra. It varies in size from 4 to 5mm. Although native to tropical Asia the range of this species is now cosmopolitan. It can be found in many countries in Europe, North America, the Caribbean, and Oceania. It was introduced to New Zealand via Australia.
This insect feeds on mildews and moulds found on plants. It has been commonly observed on flax. It is likely that the beetle was named for Julien Desjardins, the French zoologist, as he was known to Guérin-Méneville. Guérin became the safekeeper of his documents after his untimely death.
Löbl, Ivan (2007). Löbl, Ivan (ed.). Elateroidea - Derodontoidea... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand |
With luck
About 10% of wildlife watchers report a Desjardins's Flat Beetle sighting in Auckland on a given day, based on 50 verified sightings from GBIF citizen-science data. It is the 132nd most-seen of the 689 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
May–July and September–March
In those months about 10% of wildlife watchers report a Desjardins's Flat Beetle in Auckland on a given day, against under 5% in April and August, the lowest months.
Only Auckland, in our data
Auckland is the only city on Wallace's Line with enough records to rate Desjardins's Flat Beetle sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Desjardins's Flat Beetle that you can see in Auckland (order Coleoptera, Beetles) are Steelblue Lady Beetle (about 30%), Fungus-Eating Ladybird (about 20%) and Hadda Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Desjardins's Flat Beetle is recorded against all the insects logged in Auckland (50 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.
