Eight legged creepy crawlies are fun to admire on nature shows or at the zoo but never in our homes. The black widow calls North America home and is responsible for hundreds of bites each year. Take back control of you home and give Bulwark Exterminating a call for 100% guaranteed spider control.
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All spiders have two body segments, a cephalothorax in front and an abdomen behind. In this group the abdomen is often very round. They have eight legs, all attached to the cephalothorax. On the front they have two small "mini-legs" called palps. These are used to grab prey, and in mating, and are much bigger in male spiders than in females. Cobweb weavers have eight eyes on the front of their cephalothorax, arranged in two rows of four. Below the eyes is the mouth and fangs that they use to bite their prey with. They all have venom to paralyze and digest their prey. Female cobweb weavers are often much bigger than males. There is a lot of variation in color in this family, but many species are brownish-grey with various patterns of darker marks.
One important group of cobweb weavers in the widow spiders. They are one of the few groups of spiders whose venom can hurt people. Only female widow spiders bite. They are shiny black, and have red markings on the bottom of their round abdomen. This is a large and diverse family of spiders, with thousands of species found all over the world. In Michigan there are several dozens species at least, and probably more still unknown to science. These spiders live in many different kinds of habitats, on the ground, on plants, in burrows and caves, pretty much anywhere they can spin their webs. They often build in dark, sheltered places, in piles of branches or basement corners. Some species in this group are common house spiders.
Here's Adam explaining how spiders can get into peoples homes. The Mother spider will make her nest in the exterior cracks on paneling. These nests will harbor the mother who goes off to hunt and will eventually lay her eggs in her nest where the baby spiders will flee to the warmth found in the interior walls.