| Family ERIOPHYIDAE | GALL MITES | |
| Aceria caulis | Black Walnut Petiole Gall Mite | |
| Aceria fraxiniflora | Ash Flower Gall Mite | |
| Eriophyes cerasicrumena | Black Cherry Leaf Gall Mite | |
| Eriophyes emarginatae | Plum Finger Gall Mite | |
Ash Flower Mite Gall
| Order OPILIONES | HARVESTMEN | |
| Phalangidae sp. | Harvestman | |
Harvestman sp., a.k.a. Daddy-Longlegs
Photo: Christine Hanrahan
| PSEUDOSCORPIONES | PSEUDOSCORPIONS | |
| Order Pseudoscorpiones sp. | Pseudoscorpion | |
Several pseudoscopions on a compost pile
| ARANEAE | SPIDERS | |
| Agalenidae | Funnel weavers | |
| Agelenopsis sp. | Funnel Weaver | |
Common American Grass Spider (Agelonopsis actuosa)
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| Araneidae | Orb weavers |
| Araneus diadematus | Garden Cross Orb Weaver or Diadem Spider |
| Araneus marmoreus | Marbled Orb Weaver |
| Araneus trifolium | Shamrock Orb Weaver |
| Araniella displicata | Six-spotted Orb Weaver |
| Argiope aurantia | Black and Yellow Argiope |
| Argiope trifasciata | Banded Orb Weaver |
| Larinioides sp. | Furrow Spider |
| Larinioides sclopetarius | Bridge Orb Weaver |
| Neoscona sp. | Orb Weaver |
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| Clubionidae | Sac spiders |
| Clubiona sp. | Sac Spider |
| Philodromus sp. | Running Crab Spider |
| Tibellus oblongus | Oblong Running Crab Spider |
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| Pisauridae | Nursery web spiders |
| Dolomedes triton | Six-spotted Fishing Spider |
| Pisaurina mira | Nursery Web Spider |
Underside of Diadem Spider
Black & Yellow Garden Spider (Argiope aurantia)
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| Linyphiidae | Sheet-web weavers and dwarf spiders |
| Hypselistes florens | Splendid Dwarf Spider |
| Neriene sp. | Sheet-web Weaver |
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| Lycosidae | Wolf spiders |
| Lycosidae spp. | Wolf Spiders |
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| Philodromidae | Philodromid spiders |
| Philodromus sp. | Running Crab Spider |
| Tibellus oblongus | Oblong Running Crab Spider |
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| Pisauridae | Nursery web spiders |
| Dolomedes triton | Six-spotted Fishing Spider |
| Pisaurina mira | Nursery Web Spider |
Nursery Web Spider (Pisaurina mira)
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| Salticidae | Jumping spiders |
| Salticidae spp. | Jumping spiders |
| Eris militaris | Bronze Jumping Spider |
| Pelegrina galathea (?) | Jumping Spider |
| Pelegrina proterva | Reckless Jumping Spider |
| Phidippus clarus | Brilliant Jumping Spider |
| Phidippus purpuratus | Jumping Spider |
| Salticus scenicus | Zebra Jumping Spider |
| Tutelina sp. | Jumping Spider |
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| Tetragnathidae | Long-jawed orb weavers |
| Tetragnatha spp. | Long-jawed Orb Weavers |
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| Theridiidae | Cobweb weavers |
| Enoplognatha ovata | Cobweb Spider |
| Theridion sp. | Cobweb Spider |
| Theridula emertoni | Cobweb Spider |
Jumping spider waiting to pounce on prey.
Photo: Christine Hanrahan
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| Thomisidae | Crab spiders |
| Bassaniana sp. | Crab Spider |
| Misumena vatia | Goldenrod Crab Spider |
| Misumenops sp. | Northern Crab Spider |
| Xysticus sp. | Crab Spider |
| Xysticus transversatus | Transverse-banded Crab Spider |
Goldenrod Crab Spider, female