European Hornet Control in San Antonio, TX: Fact Check
European hornets are not documented anywhere in Texas by the extension services and researchers we rely on, so the large brown-and-yellow wasp at your San Antonio home is almost certainly something else. The usual answers are a cicada killer, a southern yellowjacket queen or a red wasp. Have a nest near the house, or just want an ID? Call or text (210) 281-1064, or book online.
Below are five things people commonly say about European hornets here, checked against the sources.
Claim 1: "European hornets live in San Antonio" #
Not supported. Texas A&M AgriLife names just one "hornet" on the Texas record, the baldfaced hornet (AgriLife E-239), and the Texas Apiary Inspection Service says the same. Neither lists the European hornet.
That answer doesn't change with the name on your water bill. Several north-side ZIP codes are shared with small cities; Census land data place most of 78231 in Shavano Park and part of 78213 in Castle Hills, for example (Census ZCTA file). None of Bexar County appears in the records below.
Claim 2: "They're spreading this way" #
Only partly. They have moved west, but no record puts them in Texas. Since landing in North America around 1840, the hornet has worked its way west; NC State Extension traces it to Louisiana in the south and the Dakotas in the north, and Penn State dates the first Arkansas record to 1999. Writing in 2025, entomologist D.E. Bowles reviewed the western records and found them clustered in the Ozark region (Arkansas and Missouri) and eastern Oklahoma, with isolated single finds in five other states (Bowles 2025). Texas is not among them. His paper raises heat as a possible barrier: the species dies above about 44 °C, which may keep it out of the hot South and Southwest.
Claim 3: "That big brown-and-yellow wasp must be one" #
Compare it with the insects San Antonio actually has:
- Cicada killer: roughly an inch and a half, rust-red up front, black-and-yellow striped behind, amber wings, and a summer habit of digging burrows in sunny lawns. See cicada killers.
- Southern yellowjacket queen: a lone, oversized, mostly orange wasp, usually seen in spring, dwarfing her half-inch daughters.
- Red wasp: a slim, rust-colored paper wasp close to an inch long, tending an open comb under an eave. See red wasps.
- Baldfaced hornet: black and white, with a gray paper nest, usually in a tree.
- Pigeon horntail: a wood wasp in hornet colors, thick through the middle with no pinched waist, and no stinger at all.
For reference, Penn State's description of the real thing: reddish head marked with yellow, a reddish-brown thorax, and an abdomen that starts brown and turns largely yellow toward the tip, with workers reaching about an inch (Penn State Extension).
Claim 4: "Something's buzzing in my wall, so it's hornets" #
Where European hornets live, they nest in hollow trees and sometimes in attics and wall voids. Here, a colony humming inside a wall is far more likely to be yellowjackets or honey bees, both of which Texas sources document in walls. That holds whether the house is a 1990s build in 78248 or a 2000s home in 78251, two of the newer northwest ZIP codes in Census data.
Whatever is inside, don't cover the outside entrance while it's active. Penn State notes that hornets shut inside can chew their way into the rooms, and AgriLife gives the same warning for yellowjackets. See yellowjackets for how wall nests are handled.
Claim 5: "A big wasp hitting my window at night is a European hornet" #
Where they live, European hornets are known for flying after dark toward porch lights and bright windows. A night-time visitor at a San Antonio window proves nothing by itself; get a photo and check it against the insects listed earlier.
When to call #
AgriLife's wasp bulletin leans toward professional help, citing the risks and the awkward places nests end up, and it tells anyone with a venom allergy or heart trouble not to try it. Call for any enclosed paper nest near the house, a nest in a wall void, or when you simply want an expert ID.
How Pest Trappers helps #
A technician identifies the insect on site and, if there's a nest, explains the options and follows the product label for any treatment. Pest Trappers LLC (TPCL #0887549) quotes after the inspection. The European hornet guide has more, and the San Antonio service page covers our local stinging-insect work.