Brown Widow
ExplorarInvertebrate
Brown Widow
latrodectus geometricus
The brown widow spider (Latrodectus geometricus) is a highly adaptable, cosmopolitan arachnid closely related to the famous black widow. Originally believed to be native to Africa or South America, this resilient species has successfully established itself in urban and suburban environments throughout tropical and subtropical regions worldwide. While they possess potent neurotoxic venom, brown widows are generally shy and non-aggressive, preferring to retreat into their messy, tangled webs when disturbed rather than confront a threat. What truly sets the brown widow apart is its incredible reproductive rate and unique, spiky egg sacs, which look like tiny, pale yellow landmines. They play a significant role in local ecosystems by consuming a wide variety of pest insects, though they also pose ecological challenges in areas where they displace native spider species, including their native black widow cousins.
Hábitat: Typically found in dark, dry, sheltered environments, often preferring artificial structures such as under outdoor patio furniture, inside recessed fence panels, and within garages or sheds.
Aspecto
Brown widows are medium-sized spiders featuring a mottled mix of tan, grey, and dark brown on their bulbous abdomens, accented by geometric patterns and white stripes. On their underside, they display a signature hourglass-shaped marking that is a bright orange or yellow color, rather than the crimson red of a black widow. Their long, slender legs are distinctly banded with dark brown and light tan stripes. Females measure up to sixteen millimeters in body length, while the tiny, inconspicuous males are barely half that size.
ReinoAnimaliaFiloArthropodaClaseArachnidaOrdenAraneaeFamiliaTheridiidaeGéneroLatrodectus
Categoría
InvertebrateRareza
Common
Peligro
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Snaps
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Datos interesantes
Although their venom is actually more toxic drop-for-drop than that of a black widow, brown widows are far less dangerous because they inject significantly less venom and are very hesitant to bite.
Brown widows often perform 'death feigning' or thanatosis when threatened, curling their legs tightly into a ball to appear dead and escape predator attention.
Unlike the smooth, round egg sacs of black widows, the brown widow constructs highly distinctive silk sacs covered in tiny, spiky silk projections, resembling tiny landmines.
Habilidades especiales
Habilidad
Spiky Egg Armor
Constructs highly distinctive silk egg sacs covered in tiny, spiky projections that serve as a physical deterrent against predators and parasitic wasps.
Habilidad
Neurotoxic Silk Snare
Weaves exceptionally strong, highly irregular tangled webs with sticky drop lines that easily snag heavy, crawling insects.
Habilidad
Passive Death Feigning
Exhibits thanatosis by curling up its legs and dropping to the ground to blend in with debris when a large threat is detected.
Medidas y detalles
- Longitud
- 1-2 cm
- Peso
- 0.0001-0.0005 kg
- Esperanza de vida
- 1-2 años
- Tamaño de la puesta
- 50-150
- Incubación
- 14-30 días
Dieta y alimentación
Feeds primarily on flying and crawling insects caught in its tangled webs, including ants, beetles, and crickets.
Diferencias por edad: Spiderlings feed on tiny invertebrates like fruit flies, while mature adults tackle larger prey like beetles.
Alimentos principales
- Ants
- Beetles
- Flies
- Crickets
- Other spiders
Método de búsqueda
- Ambush
Conexiones ecológicas
eaten by
Blue Mud Dauber
Chalybion californicum
The blue mud dauber wasp paralyzes brown widow spiders to stock its nests for its developing larvae.
competitor
Argentine Ant
Linepithema humile
Argentine ants frequently compete for territory and can swarm and prey upon brown widow spiders, especially spiderlings and egg sacs.
competitor
Southern Black Widow
Latrodectus mactans
The brown widow often displaces the native southern black widow in urban habitats through competitive exclusion.
Rasgos
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También conocido como
Todavía no hay alias listados.
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Seguridad
Peligro
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Todavía no hay notas especiales de seguridad.
Preguntas frecuentes
¿Cómo identificar a Brown Widow?
La forma más fácil de identificar a Brown Widow es usar la aplicación de identificación de naturaleza Snappit.
¿Cuál es el longitud de Brown Widow?
1-2 cm
¿Cuál es el peso de Brown Widow?
0.0001-0.0005 kg
¿Cuál es el esperanza de vida de Brown Widow?
1-2 años
¿Qué come Brown Widow?
Feeds primarily on flying and crawling insects caught in its tangled webs, including ants, beetles, and crickets.
¿Dónde se encuentra normalmente Brown Widow?
Typically found in dark, dry, sheltered environments, often preferring artificial structures such as under outdoor patio furniture, inside recessed fence panels, and within garages or sheds.
¿Cómo caza Brown Widow?
Ambush
¿Cuál es el tamaño de la puesta de Brown Widow?
50-150
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