Acacesia hamataW
Acacesia hamata

Acacesia hamata is a species of spider in the orb weaver family, Araneidae. It is typically found in summer months of the eastern half of the United States, south to Argentina. Acacesia hamata is the only species of Acacesia normally found in the United States.

Anyphaena celerW
Anyphaena celer

Anyphaena celer is a species of ghost spider in the family Anyphaenidae. It is found in the United States and Canada.

Araneus niveusW
Araneus niveus

Araneus niveus is a species of orb weaver in the spider family Araneidae. It is found in the United States.

Araneus thaddeusW
Araneus thaddeus

Araneus thaddeus, the lattice orbweaver, is a species of orb weaver in the spider family Araneidae. It is found in North America.

Araneus trifoliumW
Araneus trifolium

Araneus trifolium, the shamrock orbweaver, is a species of orb weaver in the family Araneidae. It is found throughout the USA and in Canada. The abdomen of Araneus trifolium can have various colors. Most commonly, it is seen in a beige or brown color. Occasionally, the abdomen of the spider has a greenish touch to the brown color or it may even be yellow or orange. In the latter case, Araneus trifolium is sometimes confused with the orange orb weaver species Araneus marmoreus, also called pumpkin spider. The shamrock spider can be distinguished from other orb weaver species by the several white dots on its back. The legs of Araneus trifolium are usually brown or beige colored with several white bands around the joints. The shamrock spider creates a web to catch its prey. Small flying insects who fly into the web will get stuck in the sticky net. The web of an orb weaver can be up to two feet (60cm) in diameter. The bite of a shamrock spider can be painful but it is not dangerous for humans with effects comparable to a bee sting.

Araniella displicataW
Araniella displicata

Araniella displicata, the sixspotted orbweaver, is a species of orb weaver in the spider family Araneidae. It is found in North America, Europe, a range from Russia to Kazakhstan, China, Korea, and Japan.

Castianeira descriptaW
Castianeira descripta

Castianeira descripta, the redspotted antmimic, is a species of true spider in the family Corinnidae. It is found in the United States and Canada.

Castianeira longipalpaW
Castianeira longipalpa

Castianeira longipalpa is a species of true spider in the family Corinnidae. It is found in the United States as well as Canada. It is a type of ant-mimic sac spider, and has most often been observed along the east coast of North America.

Castianeira trilineataW
Castianeira trilineata

Castianeira trilineata is a species of true spider in the family Corinnidae. It is found in the United States and Canada.

Cesonia bilineataW
Cesonia bilineata

Cesonia bilineata is a species of ground spider in the family Gnaphosidae. It is found in North America.

Cheiracanthium inclusumW
Cheiracanthium inclusum

Cheiracanthium inclusum, alternately known as the black-footed yellow sac spider or the American yellow sac spider, was formerly classified as a true sac spider, and then placed in the family Miturgidae, but now belongs to family Cheiracanthiidae. It is a rather small pale yellow species that is indigenous to the Americas and can be found living in the foliage of forests and gardens but also can inhabit human homes. Despite common beliefs of necrosis, Cheiracanthium bites cause only localized swelling. C. inclusum is closely related to Cheiracanthium mildei, an introduced species native to Europe which is similar in appearance and natural history and can also be found in North American homes.

Clubiona obesaW
Clubiona obesa

Clubiona obesa is a species of sac spider in the family Clubionidae. It is found in the United States and Canada.

Hibana gracilisW
Hibana gracilis

Hibana gracilis, the garden ghost spider, is a species of ghost spider in the family Anyphaenidae. It is found in the United States and Canada.

Hypsosinga rubensW
Hypsosinga rubens

Hypsosinga rubens is a species of orb weaver in the spider family Araneidae. It is found in the United States and Canada.

Hyptiotes cavatusW
Hyptiotes cavatus

Hyptiotes cavatus, the triangle weaver, is a species of cribellate orb weaver in the family of spiders known as Uloboridae. It is found in the United States and Canada. It uses an unusual hunting technique whereby it tightens up an anchor line of the web whilst waiting for prey. This effectively winds up and compresses the web. When prey touches the web, the spider releases the held anchor line, causing the web to spring forwards 2-3cm at high speed. This causes up to 4 additional web strands to touch the prey, and the sudden stop when the web reaches the end of its elasticity then winds the prey further into the strands. This process has analogues to the techniques by humans used to power catapults and ballistae.

Larinia directaW
Larinia directa

Larinia directa is a species of orb weaver in the spider family Araneidae. It is found in a range from the United States to Brazil.

Mangora gibberosaW
Mangora gibberosa

Mangora gibberosa is a species of spider in the family Araneidae, found in North America.

Mangora placidaW
Mangora placida

Mangora placida is a species of spider in the family Araneidae, found in North America.

Mangora spiculataW
Mangora spiculata

Mangora spiculata is a species of orb weaver in the family Araneidae. It is found in North America.

Mecaphesa asperataW
Mecaphesa asperata

Mecaphesa asperata, the northern crab spider, is a species of crab spider in the family Thomisidae, found in North and Central America, and the Caribbean. It is a species of the 'flower spiders', so-called because they generally hunt in similarly coloured flowers for visitors such as bees and flies, and is a much smaller nearctic relative of the better-known Goldenrod Spider.

Mecaphesa celerW
Mecaphesa celer

Mecaphesa celer, known generally as the swift crab spider, is a species of crab spider in the family Thomisidae. Its range is quite large, and it is found throughout much of North and Central America.

Metepeira labyrintheaW
Metepeira labyrinthea

Metepeira labyrinthea, the labyrinth orbweaver, is an American dollar coin-sized spider, with thin legs and a round, bulbous abdomen It is a member of the genus Metepeira in the family Araneidae. The female’s length is 5.3 mm, its carapace 2.3 mm, abdomen 3.3 mm, and extended legs 18.4 mm. The carapace is brown or gray, and the abdomen is dark with a white pattern. The legs alternate pale brown and dark brown, and the sternum is dark brown with a longitudinal yellow mark. The male spider is three-quarters of the female’s length, or slightly larger, with a darker carapace and with greater contrast between dark and light areas of the legs. Metepeira are easily distinguished from other Araneidae by their light eye region, white median line on the sternum, relative length of the leg segments, small male palpus, weakly sclerotized epigyne and the special composite web.

Neoscona domiciliorumW
Neoscona domiciliorum

Neoscona domiciliorum, commonly known as the spotted orbweaver or redfemured spotted orbweaver, is a spider in the family Araneidae. The specific epithet domiciliorum means "of dwellings" in Latin and refers to the fact that this species is often found living on buildings. Their bites are not known to cause serious harm in humans.

Neoscona pratensisW
Neoscona pratensis

Neoscona pratensis is a species of orb weaver in the spider family Araneidae. It is found in the United States and Canada.

Pardosa proximaW
Pardosa proxima

Pardosa proxima is a wolf spider species with a distribution of "Macaronesia, Europe, Russia, China".

Phrurotimpus alariusW
Phrurotimpus alarius

Phrurotimpus alarius is a species of true spider in the family Phrurolithidae. It is found in the United States and Canada.

Pisaurina dubiaW
Pisaurina dubia

Pisaurina dubia is a species of nursery web spider in the family Pisauridae. It is found in the United States.

Strotarchus piscatoriusW
Strotarchus piscatorius

Strotarchus piscatorius is a species of true spiders in the family Cheiracanthiidae. It is found in the USA and Mexico.

Synema parvulumW
Synema parvulum

Synema parvulum is a species of crab spider in the family Thomisidae. It is found in the United States and Mexico.

Trachelas tranquillusW
Trachelas tranquillus

Trachelas tranquillus, the broad-faced sac spider, is a species of true spider in the family Trachelidae. It is found in the United States and Canada.

Wulfila saltabundusW
Wulfila saltabundus

Wulfila saltabundus is a species of ghost spider in the family Anyphaenidae. It is found in the United States and Canada.

Xysticus feroxW
Xysticus ferox

Xysticus ferox, the brown crab spider, is a species of crab spider in the family Thomisidae. It is found in the USA and Canada.