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Nov 12, 2023 · Size: They vary in size; for instance, the black widow spiders are 3mm to 10 mm (0.12 inches to 0.39 inches) long. The red widow, on the other hand, has a length of approximately 12.7 mm (0.5 inches). Color: The females have a shiny black or dark brown body with an orange or red pattern on the underside (ventral part) of their abdomen.
Latrodectus hesperus Chamberlain and Ivie: Western black widow Latrodectus variolus Walckenaer: Northern black widow . Figure 2. Adult female brown widow spider, Latrodectus geometricus (C.L. Koch). Photograph by Lyle J. Buss. Figure 3. Dorsal view of adult red widow spider, Latrodectus bishopi (Kaston). Photograph by James L. Castner. Figure 4.
A large female black widow spider can grow to about 1.5 inches (38 millimetres), including leg span. Their body measures about 0.5 – 0.6 inches (12 – 16 millimetres). Male black widow spiders are half the size of the female or even smaller. They have longer legs and a smaller abdomen in relation to their body size.
Dec 7, 2021 · Additional resources. Black widow spiders are several species of arachnids in the genus Latrodectus that are known for the females' unique and striking appearance as well as their rumored tendency ...
Mar 16, 2023 · Latrodectus tredecimguttatus is the European black widow; Latrodectus hasseltii crawls throughout Australia and known as the redback black widow; in South America, two species — Latrodectus corallinus and Latrodectus curacaviensis — are commonly called South American black widow spiders. Scientific Name. Taxonomy Origin Date.
Latrodectus geometricus, is a suspected consequence of human transport. Although the taxonomy of the genus has been examined repeatedly, the recognition of taxa within Latrodectus has long been considered problematic due to the difficulty associated with identifying morphological features exhibiting discrete geographic boundaries.
Hábitat: Se encuentran en sitios colindantes a las áreas domésticas, como salientes de edificios, huecos en paredes de ladrillo o vallas de madera, además de mesas de picnic y entre los escombros. Se alimenta normalmente de insectos, pero también llega a cazar pequeños sapos atrapados en su red, llega a vivir hasta 3 años. 1. 2.
