Naupactus cervinus
In 3 days ~10% in a week ~20%
Naupactus cervinus, the Fuller rose beetle or Fuller's rose weevil, is a species of broad-nosed weevil in the family Curculionidae. Native to South America, it has been in North America since the 19th century, and has also been introduced to Europe, South Africa, and Australia. This species is believed to reproduce parthogenically, without fertilisation, as no male specimens have ever been found.
N. cervinus grows to 6.5-8 mm in length and is highly polyphagous, feeding on leaves, buds, roots, flowers and larvae. Adults are brown-grey in colour with laterally positioned eyes. The rostrum is slightly curved downward, and the elytra is fused, rendering the weevil flightless.
Eggs are small, cylindrical and yellow, measuring about 1 mm in length. They are laid in a mass and covered by a sticky, white excretion. Larvae are white with a yellow-ish head capsule and black mandibles, measuring 10-12 mm.
Females lay up to 1000 eggs in their lifetime. Eggs are usually laid under stones or in bark crevasses, on leaves, or in the calyx lobes of fruit. After two to six weeks the eggs hatch, the larvae dropping to the ground, burrowing, and feeds on roots for the next... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Table Mountain National Park | 🇿🇦 South Africa |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toluca | 🇲🇽 México | |
| 2 | Puebla | 🇲🇽 México | |
| 3 | Mexico City | 🇲🇽 México | |
| 4 | Curitiba | 🇧🇷 Brazil | |
| 5 | Santiago | 🇨🇱 Chile | |
| 6 | Auckland | 🇳🇿 New Zealand | |
| 7 | Montevideo | 🇺🇾 Uruguay | |
| 8 | Perth | 🇦🇺 Australia | |
| 9 | San Luis Potosí | 🇲🇽 México | |
| 10 | Pretoria | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Fuller's Rose Weevil sighting in San Francisco on a given day, based on 71 verified sightings from GBIF citizen-science data. It is the 183rd most-seen of the 737 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 Fuller's Rose Weevil in San Francisco on a given day, so our monthly data shows no clear season.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Fuller's Rose Weevil sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
22nd of 27
Of the 27 cities where we can rate Fuller's Rose Weevil sightings, San Francisco ranks 22nd at under 5%. The best odds are in Toluca (México, about 10%), Puebla (México, about 10%) and Mexico City (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Fuller's Rose Weevil is recorded against all the insects logged in San Francisco (71 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.
