Trivia: The native Agrarian Sac Spider (Cheiracanthium inclusum) wanders outside among leaves of trees and shrubs, also in yards and is also often indoors. Description: A medium to large cobweb weaver. Overall it has a long, narrow, grey body, with extremely long legs. Habitat: Near or on slow-moving or standing bodies of water, often found nearby on vegetation, Range: Throughout eastern North America, across Canada, north into Nunavut. Habitat: Northern black widows spin messy webs on stumps or logs, under stones, in holes and occasionally in barns and rural privies, Range: Eastern North America including various Ontario locations. Trivia: This spider often rests with four legs straight forward and four back, aligning perfectly with thin, grass leaves on which it hides. The abdomen has a dark “folium” mark outlined by white. They are active hunters. Like their namesake, crab spiders extend their legs to the sides. Also, brown recluses only have six … 8 eyes in 3 rows, bottom row of eyes spaced wider than top rows. I’m not looking to identify any spider in particular, but I love to learn about the native biodiversity in the area. The cephalothorax is shiny brown. Mostly nocturnal, they spend the day in a silken retreat. They pursue this role with instinctive dedication; some have even moved into the warm micro-climates of people’s homes, unwittingly protecting us from pesky insects. Beautiful. They are around three-quarters of an inch (20 mm) in length and are usually yellow and brown in color. The abdomen is long and narrow. It’s better to put it in an attic or basement, or even to let it wander where it likes. Unfortunately, immatures of the native black widow spider, Latrodectus hesperus, also are tan with white stripes and are frequently mistaken for brown widows. The legs are banded tan and brown. Ground spiders never construct a prey-catching web; instead they run down insects on the surface. Trivia: This species is sometimes observed in winter on snow. These spiders are aggressive toward each other. Thank you! In turn, they are a food source for many animals, forming an important link in the food chain. Depending heavily on camouflage for protection, wolf spiders tend to be cryptically coloured (often grey or brown) to blend into their surroundings at night. Among web-weavers, the type or location of web often distinguishes the family. Between 10 and 12 points jut out from the abdomen’s edge, giving this spider a somewhat star-like shape and making it easy to identify in the field. Habitat: Usually found near or on water, often on floating vegetation, Seasonality: Males spring to early summer, females late spring to early fall. 3 rows of eyes: 2 medium on top of head, 2 large facing forward, 4 smaller on third row. Nursery web spiders (specifically Pisaurina mira, no common name other than nursery web spider). Occasionally found on forest floors. They are most commonly found in rafters and wooden structures in suburban and rural structures or areas, and on boats near lakes, thus getting their name, "barn spider". Females range from 5 – 10 millimetres, males 4 – 7 millimetres. The small eyes are arranged in two rows. The female is overall dark brown with lighter brown legs. Overall shiny black in colour, they have a red “hourglass-shaped” pattern on underside of abdomen. The overall body colour is usually mid-brown or grey. The chelicerae are very dark. Science Teaching Supplies and Nature Gifts, Learn About Brown Recluse Spiders and Enjoy Colorful Pictures, Spiders: Amazing Pictures & Fun Facts on Animals in Nature, Naturalist Classes and Continued Learning, Genus Agelenopsis, common American Funel-web spider, Dolomedes triton, six-spotted fishing spider, Loxosceles reclusa, brown recluse or violoin spider, 6 color variations, but most common buffy brown/tan, Note: 2 clearly visible spinneretts on abdomen, Buffy brown, sometimes with triangle shapes down length, dark brown line down center of body, sometimes two creamy stripes down sides, In genus hogna, distinct whitish to creamy white stripe running down middle, Pear shaped cephalothorax, with two heavy dark bands on either side, light stripe down middle, Pale whitish stripe down sides of cephalothorax, Distinct violin shape, with the violin body stating at the mouth and the neck heading towards the abdomen. Orb weavers are nature’s poster spiders. Females have a brownish cephalothorax. There is usually a dark band at the end of the tibia (the leg’s second part). There is a wide, dark middle band on the underside of the abdomen. Females grow to 15 millimetres, males to approximately 13 millimetres in length. Males have a similar but broader white band at the front of the abdomen that also tapers toward the rear, and have orange or white spots on the dorsal abdomen. A great starting place to learn spider ID and to become familiar with their body parts, names, and the eye placement of spiders is on the website "Spider Identification Guide." Males have a broad whitish band around the entire cephalothorax, and a light band along the sides of the abdomen. Also in low, dense coniferous trees or shrubs where the foliage gives support to the web. The abdomen is white with various brown patterns, and has a distinctive lobe extending from its posterior which accounts for part of its common name. The cephalothorax may have a dark longitudinal mark that divides in two towards the abdomen. Yet some spiders can be observed year-round. Description: Although other species of Philodromus may be larger, this species is a fairly small spider. These spiders are small-to-medium-sized and often light-coloured. After hatching, the tiny spiderlings – that may number up to 100 or so – ride on the mother’s abdomen. Unlike southern widows, this “hourglass” is broken in the middle by a small black gap in our northern widows, and they also may have red marks on top of the abdomen. I'm often amazed at the number of times I've been outdoors with someone and when we see a brown spider immediately someone says, "Look, there's a wolf spider." A tan stripe extends back on the cephalothorax from between the eyes. Instead, an effort has been made to choose species and families to represent the following: first, commonly observed spiders; second, distinctive and dramatic species; and third, examples of some unusual families that make our arachnofauna so diverse and interesting. Habitat: Meadows, shrubby areas, yards and gardens. They tend to be medium-sized and light-coloured (light brown or grey). The legs are reddish-brown and shiny. This reaction could be due to their response to vibrations in the web when prey is trapped. Let's start with some pictures of common species to help you begin to compare them all visually: Notice, in the picture above, of the wolf spider the distinct tan strip coming down the cephalothorax (fused head and middle section) and the dark stripe on the abdomen. Orbweavers are not dangerous to people. Probably introduced from Europe, this species seems to prefer attaching its web to metal, brick or other non-natural material. The body is overall dark brownish red with two white bands on the abdomen’s front half. Habitat: Most often encountered indoors, where it wanders walls and ceilings in search of prey; building its silken daytime “sac” or retreats at the intersection of wall and ceiling, Range: Introduced from Eurasia, now widespread in the United States and southern Canada. Barn spiders are most common in the Northeastern United States and Canada. The colour of a species is often quite variable even when mature, while immature spiders are often very different than adults. Many species of this family are convincing ant-mimics in both appearance and behaviour. Their venom is considered non-toxic to most humans on the level of any other non-toxic insect bite. The light-coloured abdomen has a central line resembling repeating arrowheads. Most people will never want to get close enough to a wolf spider to be able to tell it apart from a grass spider, but for those of you intrepid enough to want to try I encourage you to get out there and look around. Females range from 10.0 – 13.0 millimetres, males from 8.5 – 9.5 millimetres. Trivia: On these orb webs, only the spiral webbing is sticky, leaving the stronger “spokes” and support lines easy for the web master to grasp. Trivia: The ambush technique and potent venom of crab spiders allow them to attack and subdue insects much larger than themselves, including wasps and bees. These spiders conceal themselves in the narrow end of the funnel and wait for insects to stumble onto the web. Description: A large orbweaver. Description: A medium-sized orbweaver. The most famous is the black widow spider that can cause a non-fatal nasty bite. Most have long spinnerets that extend beyond the posterior abdomen. Females from 17 – 20 millimetres, males 9 – 13 millimetres. Habitat: Forest understory, among tall plants in meadow, Range: Found in northeastern and northwestern United States and adjacent parts of southern Canada. Browse Spiders Acacesia hamata. Females range from 12.5 – 16.5 millimetres, males from 10 – 15 millimetres. Because of their habit of climbing onto shoreline structures, they are often called “dock” spiders. Trivia: Members of this family are called “money” spiders in Britain, originating from the belief that it is lucky to have one land on you.