Druon quercuslanigerum
In 3 days ~20% in a week ~30%
Druon quercuslanigerum is a species of gall wasp that forms galls on Quercus virginiana, Quercus geminata, Quercus fusiformis, and Quercus oleoides. There are both asexual and sexual generations. The asexual generation forms galls on the leaves, whereas the sexual generation forms galls on the catkins. It can be found in the southern United States and Mexico. Predators of this species include the green parakeet.
Druon quercuslanigerum was first described in 1881 by William Harris Ashmead as part of the genus Cynips but moved the species to the genus Andricus four years later. In 2022, it was moved to the re-established genus Druon.
The asexual generation gall consists of an inner capsule of mature galls with a woolly covering, typically appearing on the underside of leaves along the mid-vein. A mature gall measures 1.0–7.0 mm in diameter and 2–3 mm high. The woolly covering varies from creamy white to yellowish-white when older, and the inner capsule is light brown. The galls can appear singly or in clusters of three to six galls.
The sexual generation galls form on catkins in the spring. They appear as a small (~1 mm) ovate swelling of the central stem... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Houston | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States | |
| 4 | Monterrey | 🇲🇽 México | |
| 5 | Dallas | 🇺🇸 United States | |
| 6 | Sacramento | 🇺🇸 United States | |
| 7 | Miami | 🇺🇸 United States | |
| 8 | Los Angeles | 🇺🇸 United States | |
| 9 | Phoenix | 🇺🇸 United States | |
| 10 | Orlando | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Druon quercuslanigerum sighting in Houston on a given day, based on 102 verified sightings from GBIF citizen-science data. It is the 153rd most-seen of the 1057 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
February and September–December
In those months about 10% of wildlife watchers report a Druon quercuslanigerum in Houston on a given day, against under 5% in January and March–August, the lowest months.
Among the best
Of the 11 cities where we can rate Druon quercuslanigerum sightings, Houston ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Austin (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Druon quercuslanigerum is recorded against all the insects logged in Houston (102 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.
