Black Widow Spider Pictures ‘Size’ : Latrodectus Images

Black Widow Spider Pictures ‘Size’ : Latrodectus Images

Widow Spider or Latrodectus among venomous spider in the world. Latrodectus genus contain 31 recognized spider species among very few are common in UK, Canada, US. Black Widow Spider commonly known as cobweb spiders. Widow spider easily recognized – a hourglass mark located on underside of abdomen.

Female black widows are dangerous, can bite and inject three times more toxic venom then male widow. According to report venom of female black widow spider is 15 times stronger than rattlesnake’s. Black Widow Spider get common name due to belief that female spider eats the male after mating. Latrodectus genus composed for both black and brown widow spider.

Only female widow spider are dangerous to humans, males and juvenile are harmless. Average lifespan 1-3 years and weight 1 gram and length 1-1.5 inch.

Widow Spiders considered most venomous spider in North America and popularly known to kill, on occasion, kill and eat the male after mating.

Spiders – More than thirty five thousand (35,000) species occur worldwide. And 3400 species of spiders in 64 families found in North America. L. hesperus common in western US and and commonly found in North American Deserts. L. mactans is black widow and commonly found in central and eastern part of US. Brown widow spider L. geometricus found in US.

Black Widow Spider Pictures

Identification – Shiny black color with red hourglass marking on underside of the abdomen. Abdominal marking may varies from yellowish orange to red color. Shape may range from an hourglass to a dot. Black Widow Spider Pictures Female & Male

Class – Arachnida

Order – Araneae

Family – Theridiidae, Comb-footed or Cob weaver spiders

Black Widow Spider Pictures
Black Widow Spider Pictures

Black Widows comprise about six  species out of about 2000 species in large Theridiidae family. Any bitten by Latrodectus should seek medical care and attempt should be made to recognize spider for identification.

Brown Widow Spider Pictures

Brown Widow Spider Pictures
Brown Widow Spider Pictures

Latrodectus geometricus established in Southern California but not native of United states. Also called Brown black widow, house button widow, geometric button spider. It’s a cousin of black widow. It also most venomous spider and release neurotoxin and cause as equal as damage to human after bite.

Red Widow Spider Pictures

Red Widow Spider Pictures
Red Widow Spider Pictures

L. bishopi is scientific name of Red Widow & endemic to certain habitats of central and southern Florida. It has reddish orange head, thorax and legs with black abdomen.

Southern Black Widow Spider Pictures

Southern Black Widow Spider Pictures
Southern Black Widow Spider Pictures

Latrodectus mactans found in most warm area of the world. Southern Black Widow Spider (L. mactans) also called shoe button spider and one of most venomous spider, commonly found in southeastern US. They generally prefer warm place to live.

L. curacaviensis found in America, L. geometricus found in US and Africa

L. hystrix, L. dahli, L. pallidus found in southern Europe, Northern Africa, and Asia.

Western Black Widow Spider Pictures
Western Black Widow Spider Pictures

Western widow a venomous spider found in western regions of North America. The female’s body is 14-16 mm in length and black color. And hourglass shaped red mark on lower abdomen. Commonly known as Western Black Widow. Check Black Widow Images.

Black Widow Spider Size

Northern Black Widow Spider Pictures
Northern Black Widow Spider Pictures

Scientific name – L. variolus and commonly known as Northern widow. Venom is 15 time stronger than rattlesnake and affect Central Nervous System of victim. It’s bite may cause latrodectism, severe discomfort or spreading local redness by severe pain.

  • Red Widow Spider (L. bishopi), Brown Widow (L. geometricus), Western Black Widow (L. hesperus), Southern Black Widow (L. mactans), Northern Black Widow (L. variolus).
  • Adult Female Widow Spider size – Female have body length (cephalothorax & abdomen combined) of approx 1/2 inch
  • Leg span of approx 1-1/2 inches & size variation in female size. Particularly gravid females. abdomen of egg carrying females can be greater than 1/2 in diameter.
Black Widow Spider Size
Black Widow Spider Size

Male Black Widow Spider size – much smaller and body length less than 1/4 inch and leg span approx 1/2 inch.

Body parts – Legs, Fangs, Cephalothorax, Abdomen and Spinnerets

Cephalothorax is much smaller than abdomen and Cephalothorax bears the head and legs. Spinnerets or silk and web making appendages are attached to rear part of abdomen. Check Black Widow Images Pics & Photos

Read About – Black Widow Spider Facts

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