Male spider

7192.     We have found at least 20 of these in the last few weeks since moving into our home in Carlisle, ON. They vary in size, this one is about an inch long in total (legs and all). My husband said he saw one much bigger. Noticeable large bobbly things on its head (excuse the lack of proper terms) What are they? Are they dangerous? only seems to be in one room in our basement. Carlisle, ON. Canada

Number 7192.      It is a male spider; the “bobbly things” are its pedipalps, used to transfer its sperm to a female spider during mating. The image is not clear enough for, but it likely is a wolf spider (family Lycosidae). These are active hunters that often enter buildings during their searches for prey. They are not dangerous to humans.