Brown Widow Spiders
Latrodectus geometricus
Now even more common than the black widow across South Florida, the brown widow hides its spiky-edged egg sacs under patio furniture, mailboxes, and playground equipment — a shy relative with a milder but still-venomous bite.
How to identify them
Brown widows are tan to brown, sometimes mottled, with an orange (not red) hourglass on the underside. Coloring varies, so the most reliable ID is the egg sac: a spherical sac covered in silk points or spikes, unlike the smooth sacs of other spiders. They build the same kind of irregular, tangled web as black widows.
Behavior and biology in South Florida
The brown widow has become one of the most abundant spiders in urban South Florida, in many areas outnumbering the black widow. It favors the same sheltered spots but is even more at home around human structures: under patio furniture and railings, inside mailboxes and meter boxes, under the lips of buckets and pots, in playground equipment, and beneath eaves.
Brown widows are shy and even less inclined to bite than black widows. Their venom is comparable drop-for-drop but they tend to inject less, so bites are usually less severe — typically localized pain and redness — though reactions vary and caution is still warranted.
Signs of an infestation
- Spiky, spherical egg sacs under furniture, railings, and mailboxes
- Tan-brown spiders with an orange hourglass in tangled webs
- Multiple webs around patios, play sets, and the exterior of the home
- Webs in the recessed, protected spots people reach into
Why they are a problem
Because brown widows are so common and nest right where families spend time — patios, mailboxes, play areas — encounters are frequent, and while bites are usually milder than a black widow’s, they are still venomous and unpleasant, and worrisome for children. Their prolific egg sacs mean populations build quickly around a home.
How Bugsy’s treats brown widow spiders
Control means removing spiders, webs, and the abundant egg sacs and treating the sheltered exterior harborage where they concentrate — furniture undersides, railings, eaves, and utility boxes. Our technicians apply targeted materials, knock down webs and sacs, and reduce the insects drawn to lighting that feed them, with follow-up to keep the fast-rebuilding population down.
Preventing brown widow spiders
- Regularly check and clear under patio furniture, railings, and grills
- Remove spiky egg sacs and webs promptly before they multiply
- Check mailboxes, meter boxes, and playground equipment
- Reduce exterior insects with yellow lighting and perimeter maintenance
- Wear gloves when reaching into protected outdoor spaces
At a glance
Very common in FLSpiky egg sacsShyVenomous, usually milder
Quick facts
Spiky egg sacs under your patio furniture or mailbox?
Brown widows are everywhere in South Florida. Get a free inspection and a plan for the spiders and egg sacs.
Brown widow bites are venomous though usually milder than a black widow’s; seek medical care if a reaction is severe. Removal is handled by a licensed Bugsy’s technician.
