Tigrosa helluo (also called Hogna helluo) and Pardosa milvina are common species of wolf spiders in the United States. While egg care is common in all spiders, carrying eggs and young around is unusual in invertebrates, such as spiders, and some scientists are studying chemical cues that may be associated with this behavior (Ruhland et al. In mid-summer (timing depends on region), female wolf spiders may be observed carrying egg sacs (for 20-40 days) or hatched spiderlings (baby spiders) on their backs. Consultation with a medical professional may be required, especially if the victim is unsure if the bite was due to a wolf spider or other spider species that may be more dangerous. However, if a person is bitten by a wolf spider, swelling and irritation at the bite site may occur. They usually are not aggressive toward humans. Occasionally, they may be found indoors, either accidentally or if insects are present that may provide suitable prey for the wolf spiders to hunt. They are found in woodland leaf litter, under rocks in the garden, in agricultural fields, and other habitats. They do not build webs and are predators of other insects, hence they can be considered beneficial. Richards, PHD, Medical Entomologist Wolf Spiders: Friend or Foe? What are the facts about Wolf Spiders? Answer: Wolf spiders, depending on species, are usually a dark brown color and are typically around one inch long. Where wolf spider invasions are persistent, a professional should be consulted to conduct a thorough inspection and recommend possible treatments.Īsk the Entomologist: Stephanie L.
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