
Discover and identify the diverse spider species found throughout Michigan. Learn about their habitats, behaviors, and whether they pose any risk to humans.
Showing 43 of 43 species

Size:
10-20mm body length
Family:
Lycosidae
Habitat:
Ground level, gardens, fields, woodlands, and occasionally indoors

Size:
8-10mm body length
Family:
Theridiidae
Habitat:
Dark sheltered areas, woodpiles, basements, garages, under eaves

Size:
5-15mm body length
Family:
Salticidae
Habitat:
Walls, windows, vegetation, gardens, sunny areas

Size:
12-20mm body length
Family:
Aranidae
Habitat:
Gardens, fields, shrubs, areas with abundant insects

Size:
12-25mm body length
Family:
Dolomedidae
Habitat:
Near water, marshes, ponds, streams, occasionally indoors during cold months

Size:
7-10mm body length
Family:
Cheiracanthiidae
Habitat:
Indoors and outdoors, under bark, in vegetation, common in homes

Size:
10-20mm body length
Family:
Agelenidae
Habitat:
Grass, vegetation, gardens, fields, under eaves

Size:
6-11mm body length
Family:
Sicariidae
Habitat:
Rare in Michigan, prefers warm southern climates, occasionally found in imported goods

Size:
2-10mm body length (legs much longer)
Family:
Pholcidae
Habitat:
Cellars, basements, dark corners, caves, under bridges

Size:
8-11mm body length
Family:
Thomisidae
Habitat:
Flowers, vegetation, gardens, parks

Size:
5-8mm body length
Family:
Theridiidae
Habitat:
Indoors, corners, ceilings, attics, basements

Size:
6-8mm body length
Family:
Oxyopidae
Habitat:
Vegetation, shrubs, gardens, meadows, often on plants

Size:
5-8mm body length
Family:
Clubionidae
Habitat:
Under bark, in leaf litter, vegetation, occasionally indoors

Size:
8-15mm body length
Family:
Gnaphosidae
Habitat:
Ground level, under rocks, logs, leaf litter, gardens

Size:
4-8mm body length
Family:
Theridiidae
Habitat:
Indoors, corners, closets, attics, sheds, garages

Size:
4-5mm body length
Family:
Scytodidae
Habitat:
Indoors, basements, cellars, dark corners, occasionally outdoors

Size:
2-8mm body length
Family:
Linyphiidae
Habitat:
Low vegetation, tall grass, shrubs, gardens, forests

Size:
10-20mm body length
Family:
Pisauridae
Habitat:
Near water, vegetation, gardens, woodlands, marshes

Size:
10-15mm body length
Family:
Ctenizidae
Habitat:
Burrows in soil, gardens, woodlands, warm areas

Size:
3-8mm body length
Family:
Mimetidae
Habitat:
Vegetation, gardens, forests, often on other spider webs

Size:
8-15mm body length
Family:
Dysderidae
Habitat:
Under rocks, logs, leaf litter, gardens, occasionally indoors

Size:
5-10mm body length
Family:
Philodromidae
Habitat:
On walls, vegetation, tree bark, gardens, occasionally indoors

Size:
8-15mm body length
Family:
Aranidae
Habitat:
Gardens, meadows, vegetation, areas with abundant insects

Size:
10-20mm body length
Family:
Agelenidae
Habitat:
Grass, vegetation, gardens, fields, building eaves

Size:
8-12mm body length
Family:
Oxyopidae
Habitat:
Vegetation, shrubs, gardens, meadows

Size:
12-20mm body length
Family:
Salticidae
Habitat:
Buildings, gardens, vegetation, sunny areas

Size:
8-12mm body length
Family:
Aranidae
Habitat:
Gardens, forests, vegetation, areas with abundant insects

Size:
6-11mm body length
Family:
Aranidae
Habitat:
Gardens, fields, vegetation, areas with abundant insects

Size:
4-10mm body length
Family:
Tetragnathidae
Habitat:
Near water, vegetation, gardens, areas with abundant insects

Size:
3-5mm body length
Family:
Theridiidae
Habitat:
Vegetation, gardens, under eaves, indoors

Size:
6-9mm body length
Family:
Theridiidae
Habitat:
Warm sheltered areas, occasionally in Michigan during warm months

Size:
8-15mm body length
Family:
Lycosidae
Habitat:
Ground level, gardens, fields, woodlands, grasslands

Size:
5-7mm body length
Family:
Salticidae
Habitat:
Buildings, gardens, vegetation, sunny areas

Size:
5-10mm body length
Family:
Thomisidae
Habitat:
Vegetation, gardens, flowers, tree bark

Size:
15-20mm body length
Family:
Dolomedidae
Habitat:
Near water, marshes, ponds, streams, swamps

Size:
10-20mm body length
Family:
Agelenidae
Habitat:
Grass, vegetation, gardens, fields, building eaves

Size:
12-18mm body length
Family:
Lycosidae
Habitat:
Burrows in soil, gardens, fields, grasslands, woodlands

Size:
6-9mm body length
Family:
Cheiracanthiidae
Habitat:
Indoors and outdoors, vegetation, under bark, common in homes

Size:
7-13mm body length
Family:
Aranidae
Habitat:
Near water, vegetation, gardens, areas with abundant insects

Size:
4-6mm body length
Family:
Salticidae
Habitat:
Vegetation, gardens, flowers, sunny areas

Size:
5-8mm body length
Family:
Oxyopidae
Habitat:
Vegetation, shrubs, gardens, meadows, flowers

Size:
3-10mm body length
Family:
Theridiidae
Habitat:
Indoors, gardens, vegetation, under eaves

Size:
10-15mm body length
Family:
Lycosidae
Habitat:
Ground level, gardens, fields, grasslands
Michigan is home to more than 500 spider species, making it a hotspot for arachnid diversity.
Only two Michigan spiders are medically significant: the Northern Black Widow and the rare Brown Recluse.
Spiders are natural pest controllers, consuming vast quantities of insects that would otherwise damage crops and gardens.