Cobweb/Theridiidae   
Crab/Thomisidae    
Crevice Weavers/Filistatidae   
Funnel-web Weavers/Agelenidae 
Ground Spiders/ Gnaphosidae
Harvestmen/Sclerosomatidae     
Jumping/Salticidae 
Orb Weavers/Araneidae     
Prowling/Miturgidae     
Running Crab/Philodromidae 
Mesh Web Weavers/Dictynidae
Sheet web and Dwarf/Linyphiidae
Spitting/Scytodidae        
Tarantula/Theraphosidae     
Wolf/Lycosidae

Unknown found on Sagebrush at Mercur, Utah 5 October 2017
Unknown found spider investigating a hole in a gall at Mercur, Utah 12 April 2017

Cobweb Spiders - Theridiidae
Theridiidae have first legs usually longest, third legs shortest.  Also fourth legs usually with comb macrosetae(rigid enlarged hair) (indistinct in Dipoena and Euryopis).  Legs have no thick setae and no femoral macrosetae.
Theridiidae abdomen usually round, rarely elongate per Bugguide

Cobweb Spider - Black Widow Spider, female -  Latrodectus hesperus
Candy Stripe Spider - male - Enoplognatha ovata - 21 June 2018 - Draper, Utah
Candy Stripe Spider - Enoplognatha ovata - cream colored spider on milkweed, 1 July 2018
Cobweb Spider - Candy Stripe Spider, Female - Enoplognatha ovata
Cobweb Spider - Theridiida Steatoda hespera
Cobweb Spider - Theridiida Steatoda triangulosa
Cobweb Spider - Theridiida Steatoda triangulosa, in a building on 27 February 2017
Cobweb Spider - Theridiida Steatoda ? male in home on 23 March 2018

Crab Spiders -  Thomisidae
Bark Crab Spider, possibly Thomisidae bassaniana - Payson Lake
Bark Crab Spider, Thomisidae xysticus
Flower Crab Spider - Misumessus
Flower Crab Spider, female - Misumena vatia
Running Crab Spider, Philodromus histrio

Crevice Weavers - Filistatidae Family
Crevice Weavers - Kukulcania utahana

Funnel-Web Weavers - Agelenidae
Funnel Weaver Spider - Grass Spider - Agelenopsis
Funnel Weaver Spider - American Grass Spider-Agelenidae agelenopsis
Funnel Weaver Spider, Male -  American Grass Spider - Agelenidae agelenopsis
Funnel Weaver Spider, Female - American Grass Spider - Agelenidae agelenopsis
Funnel Weaver - Agelenidae, In Draper, Utah

Ground Spiders - Gnaphosidae
Ground Spider - Sergiolus montanus
Ground Spider - Gnaphosidae

Harvestmen - Sclerosomatidae Spiders 
Daddy-longlegs or Harvestmen
Daddy-longlegs or Harvestmen on Stucco Wall

Jumping Spiders - Salticidae Family
Jumping Spider, Habronattus (some consider Habronattus to belong to genus Pellenes)
Jumping Spider, Habronattus clypeatus
Jumping Spider, Habronattus clypeatus-2
Jumping Spider, Habronattus -Female
Jumping Spider, Apache Jumping Spider - Phidippus apacheanus
Jumping Spider, Bold Jumper - Phidippus audax, mating, egg sac
Jumping Spider, Bold Jumper - Phidippus audax, Female
Jumping Spider, Bold Jumper maybe - Phidippus audax, 2 October 2016
Jumping Spider, Bold Jumper, Phidippus audax variant bryantae variation
Jumping Spider - Phidippus audax
Jumping Spider, Cardinal - Phidippus cardinalis
Jumping Spider - Phidippus clarus- female - located by John Richards
Jumping Spider, Red-backed  - Phidippus johnsoni
Jumping Spider, Phidippus johnsoni female attempting to balloon away
Jumping Spider, Phidippus johnsoni
Jumping Spider - Phidippus johnsoni - male
Jumping Spider - Phidippus octopunctatus - Nephi Canyon, 5 August 2018 
Jumping Spider - Phidippus  unk 1
Jumping Spider - Phidippus unk 2
Jumping Spider - Phidippus unk.
Jumping Spider - Phidippus , species unk. 03-23-06

Jumping Spider - Platycryptus californicus - spiderling - Table Grape Spider - Draper, November 2016
Jumping Spider - Platycryptus californicus_- Table Grape Spider - Draper 8 October 2015
Jumping Spider - Platycryptus californicus - Table Grape Spider - Draper - 25 March 2006
Jumping Spider - Platycryptus californicus - Table Grape Spider - Draper - 20 July 2005, August 2016
Jumping Spider - Platycryptus californicus - Table Grape Spider - Draper - 8 November 2017
Jumping Spider, Zebra - Salticus scenicus- Draper, Utah, April 1, 2018
Jumping Spider,  Zebra- Salticus scenicus

Mesh Web Weavers - Dictynidae Family
Dictyna Mesh Weaver at Antelope Island May 8, 2018

Orb Weavers - Araneidae Family
Orb Weaver- Aculepeira packardi at Mercur
Orb Weaver - Six-Spotted (Eight Spotted variant)-Araniella displicata
Orb Weaver - Six-Spotted  - Araniella displicata at Wasatch State Park- 21June 2018
Orb Weaver - Cat-faced Spider - Araneus illaudatus gemmoides at Payson Lake
Orb Weaver - Cat-faced Spider - Araneus illaudatus gemmoides
Orb Weaver - Cat-faced Spider - Araneus illaudatus gemmoides - immature
Orb Weaver - Cat-faced Spider - Araneus illaudatus gemmoides
Orb Weaver - Cat-faced Spider - Araneus illaudatus gemmoides
Orb Weaver - Argiope, Banded - Argiope trifasciata - male and female Mercur, Tooele County, Utah- 2017
Orb Weaver - Argiope, Banded - Argiope trifasciata - Antelope Island, August 2017
Orb Weaver - Argiope, Banded - Argiope trifasciata 3
Orb Weaver - Argiope, Banded - Argiope_trifasciata
Orb Weaver - Argiope, Banded - Argiope trifasciata with stabilimentum
Orb Weaver - Cross Spider 7-25-04, Antelope Island
Orb Weaver - Desert - Metepeira species Egg Sac on  Antelope Island 16 August 2017
Orb Weaver - Lynx Spider - Oxyopes
Orb Weaver - possibly Neoscona oaxacensis at antelope_island_16aug2017
Orb Weaver - Male- Lincoln Point
Orb Weaver  - Metepeira tiny on web -April 27, 2018
Orb Weaver - Metepeira - on web at Mercur, Utah - 5 October 2017
Orb Weaver - Neoscona oaxacensis (red/orange color)- Antelope Island
Orb Weaver - Neoscona oaxacensis on Sunflower at Lincoln Point
Orb Weaver - Neoscona oaxacensis
Orb Weaver - Neoscona oaxacensis- Western Spotted Orb Weaver at Antelope Island 16 August 2017
Orb Weaver - Neoscona oaxacensis- Western Spotted Orb Weaver at Antelope Island 16 August 2017 -2
Orb Weaver - Western Spotted, or Zig-Zag - Neoscona oaxacensis- Eagle Mountain
Orb Weaver - Neoscona oaxacensis - Western Spotted or Zig-Zag at Inlet Park
Orb Weaver - Trashline - Cyclosa conica - Uinta Mountains, Utah
Orb Weaver - Trashline - Cyclosa conica - Middle Canyon, Tooele County, Utah
Orb Weaver - Trashline - Cyclosa conica - Wasatch State Park, Wasatch County, Utah



Prowling Spider - Yellow Sac Spiders (Miturgidae)
aka Long-legged Sac Spiders
Long-legged Sac (Yellow sac)  Spider - Cheiracanthium
Long-legged Sac Spider - Cheiracanthium mildei
Long-legged Sac Spider - Cheiracanthium Eutichuridae



Running Crab Spiders - Philodromidae Family
Running Crab Spiders - Tibellus duttoni or chamberlini


Sheetweb and Dwarf Spiders - Linyphiidae
1. "Linyphiidae have legs long and thin with macrosetae (Hairs on males somewhat reduced)
They have long sensory hairs on the first three legs,sometimes on all four legs."
2.  Linyphiidae abdomen usually oval or elongated.


Hammock Spider - Linyphiinae pityohyphantes


Spitting Spiders - Scytodidae Family
Spitting Spider - Scytodes thoracica

Tarantula-Theraphosidae Family
Aphonopelma iodius - Utah Tarantula - photo  by Jack Binch
Aphonopelma iodius -  Utah
Avicularia versicolor (see Caribena versicolor)-Antilles pinktoe
Brachypelma albopilosum - Curly Hair (Nicaraguan)#1
Brachypelma albopilosum - Curly Hair (Nicaraguan)#2
Brachypelma auratum -Mexican Flame Knee #221
Brachypelma auratum - Mexican Flame Knee #239
Brachypelma hamorii previously smithi -Mexican Redknee
Brachypelma klaasi - Mexican Pink
Caribena versicolor - Antilles pinktoe
Chromatopelma cyaneopubescens-Green Bottle Blue #1 Female
Chromatopelma cyaneopubescens-Green Bottle Blue #2 Male - update 31 December 2017
Grammostola pulchripes - Tarantula, Chaco Golden Knee
Grammostola rosea - Tarantula, Chilean Rose hair - Pink Phase
Grammostola rosea - Tarantula, Chilean Rose hair - Red Phase
Haplocosmia himalayana - Himalayan Earth Tiger
Kochiana brunnipes - Brazilian Dwarf Beauty
Poecilotheria fasciata - Tarantula, Sri Lanka Ornamental
Poecilotheria fasciata - Tarantula, Sri Lanka Ornamental #2
Poecilotheria fasciata - Tarantula, Sri Lanka Ornamental #3
Poecilotheria metallica #1 - Tarantula, Gooty, Sapphire Ornamental Tree Spider
Poecilotheria metallica #2 - Tarantula, Gooty, Sapphire Ornamental Tree Spider
Pterinopelma sazimai - Tarantula, Brazilian Blue

Tarantula information on male spurs or hooks - tibial apophyses

Wolf Spiders - Lycosidae - Family
Wolf Spider - Lycosidae with egg sac
Wolf Spiders - ballooning immature spider - Lycosidae

Passive dispersal in arachnids