{"id":329,"date":"2016-10-28T14:16:30","date_gmt":"2016-10-28T19:16:30","guid":{"rendered":"http:\/\/agrilife.org\/urban-ipm\/?p=329"},"modified":"2016-10-28T14:16:30","modified_gmt":"2016-10-28T19:16:30","slug":"widow-spiders","status":"publish","type":"post","link":"https:\/\/agrilife.org\/urban-ipm\/2016\/10\/28\/widow-spiders\/","title":{"rendered":"Widow spiders"},"content":{"rendered":"

Information just in time for Halloween where spider webs and spooky spiders are a common sight.<\/p>\n

There are four species of widow spiders found in Texas, with the best known being the black widow.\u00a0 Coloration can vary, but they are typically jet black with two reddish-orange triangles on the underside of the abdomen, forming an hourglass shape.\u00a0 The triangles sometimes do not touch each other creating a broken hourglass shape.\u00a0 Males and juveniles are smaller and often are more colorful, with bright markings on their sides or back.<\/p>\n

Females lay eggs in an oval sac which can hold from 25 to over 900 eggs.\u00a0 Depending on temperature and time of year, eggs usually hatch after about 20 days.\u00a0 Spiderlings stay near the egg sac for several days where they can be seen consuming their brothers \"black-widow\"<\/a>and sisters.\u00a0 The survivors throw a thread of silk to the wind and are carried off in a process called \u201cballooning\u201d.\u00a0 They eventually locate a sheltered spot where they build a loosely woven web and remain for the rest of their lives.\u00a0 As time progresses, the spiders build larger webs to capture larger prey.\u00a0 Males eventually leave their webs to find females for mating.\u00a0 In natural settings, most females do not eat males after mating.<\/p>\n

Widow spiders do not like being in the open.\u00a0 They can often be found outside in protected areas such as rainspouts, shrubbery, firewood piles or unused BBQ pits.\u00a0 It is also possible to find them in garages, cellars, attics, furniture or electric or water meter boxes.\u00a0 Widows are shy creatures and often people are bitten when a web is accidentally disturbed.<\/p>\n

The bite of a black widow sometimes is not noticed, but when it is, it often feels like a pin prick.\u00a0 The bite location will have two red marks surrounded by redness and swelling.\u00a0 The bite reaction is systemic and intense pain usually occurs within 1-3 hours and continues for up to 48 hours.\u00a0 Other symptoms include tremors, nausea, vomiting, leg cramps, abdominal pain, profuse perspiration and rise in blood pressure.\u00a0 It is also possible for breathing difficulties and unconsciousness to occur.\u00a0 If bitten by a black widow, immediately seek medical attention.<\/p>\n

When working around the house or in the yard, it is best to wear leather gloves to avoid being bitten by venomous arthropods.<\/p>\n","protected":false},"excerpt":{"rendered":"

Information just in time for Halloween where spider webs and spooky spiders are a common sight. There are four species of widow spiders found in Texas, with the best known being the black widow.\u00a0 Coloration can vary, but they are typically jet black with two reddish-orange triangles on the underside of the abdomen, forming an hourglass shape.\u00a0 The triangles sometimes do not touch each other creating a broken hourglass shape.\u00a0 Males and juveniles are smaller and often are more colorful, with bright markings on their sides or back…. Read More →<\/a><\/span><\/p>\n","protected":false},"author":108,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[273,277,275,276,272,274],"class_list":["post-329","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-black-widow","tag-spider","tag-venomous","tag-venomous-spider","tag-widow","tag-widow-spider"],"acf":[],"yoast_head":"\nWidow spiders - Urban IPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agrilife.org\/urban-ipm\/2016\/10\/28\/widow-spiders\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Widow spiders - Urban IPM\" \/>\n<meta property=\"og:description\" content=\"Information just in time for Halloween where spider webs and spooky spiders are a common sight. 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