Brown Recluse vs Southern House Spider

The quick tellMale southern house spiders are tan with long legs, but they have eight eyes bunched on a small bump and no violin mark.
Brown recluse (Loxosceles reclusa)

Photo: Br-recluse-guy, Public domain, via Wikimedia Commons

Brown recluse

Medically significant · Loxosceles reclusa

  • Dark violin shape on the back, neck of the violin points to the rear
  • Six eyes in three pairs (most spiders have eight)
  • Plain tan abdomen and legs with no bands or spines
  • Long thin legs; with legs spread it is about the size of a quarter

Size: 0.25–0.5 in. Habitat: Indoors in boxes, closets, attics and basements; outdoors under rocks and bark.

Most bites heal without trouble; a few cause a slow-healing wound. Many wounds blamed on recluses outside their range turn out to be other conditions.

Southern house spider (Kukulcania hibernalis)

Photo: lisalbs, CC0, via Wikimedia Commons

Southern house spider

Harmless · Kukulcania hibernalis

  • Males are tan with very long legs and get mistaken for brown recluses
  • Females are dark and velvety
  • Eight eyes grouped together on a small bump
  • Flat, woolly webs around cracks in walls

Size: 0.4–0.8 in. Habitat: Buildings and fences across the South.

Harmless to people.

Where each one lives

Alabama: both live hereAlaska: neitherArizona: neitherArkansas: Brown recluse onlyCalifornia: neitherColorado: neitherConnecticut: neitherDelaware: neitherFlorida: Southern house spider onlyGeorgia: both live hereHawaii: neitherIdaho: neitherIllinois: Brown recluse onlyIndiana: Brown recluse onlyIowa: Brown recluse onlyKansas: Brown recluse onlyKentucky: Brown recluse onlyLouisiana: both live hereMaine: neitherMaryland: neitherMassachusetts: neitherMichigan: neitherMinnesota: neitherMississippi: both live hereMissouri: Brown recluse onlyMontana: neitherNebraska: Brown recluse onlyNevada: neitherNew Hampshire: neitherNew Jersey: neitherNew Mexico: neitherNew York: neitherNorth Carolina: Southern house spider onlyNorth Dakota: neitherOhio: Brown recluse onlyOklahoma: Brown recluse onlyOregon: neitherPennsylvania: neitherRhode Island: neitherSouth Carolina: Southern house spider onlySouth Dakota: neitherTennessee: Brown recluse onlyTexas: both live hereUtah: neitherVermont: neitherVirginia: Southern house spider onlyWashington: neitherWest Virginia: neitherWisconsin: neitherWyoming: neither
Brown recluse: 16 states. Southern house spider: 9 states. Both live in 5 states.

Side by side

Brown recluseSouthern house spider
DangerMedically significantHarmless
Size0.25–0.5 in0.4–0.8 in
States169
HabitatIndoors in boxes, closets, attics and basements; outdoors under rocks and barkBuildings and fences across the South

Questions

How can you tell a brown recluse from a southern house spider?

Male southern house spiders are tan with long legs, but they have eight eyes bunched on a small bump and no violin mark.

Which one is dangerous?

The brown recluse: medically significant. The southern house spider: harmless. If you are not sure, keep your distance and do not handle it.

Where do both live?

Both live in 5 states: Alabama, Georgia, Louisiana, Mississippi and Texas.

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