Susuacanga stigmatica
In 3 days ~40% in a week ~70%
Susuacanga stigmatica, with no commonly used English name, though some databases and local lists may provide a descriptive name such as speckle-necked longhorn beetle, is a species of beetle native to the New World, belonging to the family Cerambycidae.
Susuacanga stigmatica, Is a big beetle with antennae longer than its body. Beyond that, here are some features helping with identification: The body is covered with ashy tawny hairs. The head is mounted high between the antenna bases. At the back, beside the top part of the prothorax, the pronotum, there are two black, triangular spots. The palps are hairy and the compound eyes are black with hatching. In females the hairy antennae are slightly longer than the body while on males they are twice as long.
The top part of the prothorax, the pronotum, is as tall as wide, with low, broad-base spines along the sides, and covered with conspicuous dots. The scutellum is rounded toward the rear. The hard back cover comprising the hardened forewings, the elytra, is markedly wider than the pronotum. It is smooth with each elytron bearing four elongated spots in pairs, one pair near the elytron front, the other about midway the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Speckle-Necked Longhorn Beetle sighting in Ría Lagartos Biosphere Reserve on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 45th most-seen of the 112 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 40% of wildlife watchers report a Speckle-Necked Longhorn Beetle in Ría Lagartos Biosphere Reserve on a given day, against under 5% in January–February, April, July and October–November, the lowest months. That is one of Ría Lagartos Biosphere Reserve's wettest months, with about 100 mm of rain against 20 mm in February.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Speckle-Necked Longhorn Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Ría Lagartos Biosphere Reserve, in our data
Ría Lagartos Biosphere Reserve is the only park on Wallace's Line with enough records to rate Speckle-Necked Longhorn Beetle sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Speckle-Necked Longhorn Beetle is recorded against all the insects logged in Ría Lagartos Biosphere Reserve (12 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.
