#class_Arachnida__Arachnida a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings
supertype: class__clas (biology) a taxonomic group containing one or more orders
member of: superclass_Chelicerata
member: arachnid__arachnoid air-breathing arthropods characterized by simple eyes and four pairs of legs
member: order_Phalangida__Phalangida__Opiliones__order_Opiliones harvestmen
member: family_Phalangiidae__Phalangiidae a family of Phalangida
member: genus_Phalangium__Phalangium type genus of the family Phalangiidae
member: harvestman__daddy_longlegs__Phalangium_opilio spider-like arachnid with a small rounded body and very long thin legs
member: order_Scorpionida__Scorpionida true scorpions
member: scorpion arachnid of warm dry regions having a long segmented tail ending in a venomous sting
member: order_Chelonethida__Chelonethida__Pseudoscorpionida__order_Pseudoscorpionida__Pseudoscorpiones__order_Pseudoscorpiones false scorpions
member: false_scorpion__falsescorpion__pseudoscorpion small nonvenomous arachnid resembling a tailless scorpion
member: genus_Chelifer__Chelifer a genus of Chelonethida
member: book_scorpion__Chelifer_cancroides minute arachnid sometimes found in old papers
member: order_Pedipalpi__Pedipalpi__Uropygi__order_Uropygi whip scorpions
member: whipscorpion__whip_scorpion nonvenomous arachnid that resembles a scorpion and that has a long thin stingless tail
member: genus_Mastigoproctus__Mastigoproctus giant whip scorpions
member: vinegarroon__mastigoproctusgiganteu large whipscorpion of Mexico and southern United States that emits a vinegary odor when alarmed
member: order_Araneae__Araneae__Araneida__order_Araneida spiders
member: spider predatory arachnid that usually has silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey
member: family_Argiopidae__Argiopidae orb-weaving spiders; cosmopolitan
member: genus_Argiope__Argiope the type genus of Argiopidae; small genus of orb-weaving spiders
member: black_and_gold_garden_spider__Argiope_aurantia a widely distributed North American garden spider
member: genus_Aranea__Aranea__Araneus__araneu__genus_Araneus a genus of orb-weaving spiders including common garden spiders and barn spiders
member: barn_spider__Araneus_cavaticus an orange and tan spider with darkly banded legs that spins an orb web daily; "the barn spider was made famous in E. B. White's book `Charlotte's Web'"
member: garden_spider__Aranea_diademata a common European garden spider
member: family_Theridiidae__Theridiidae a family of comb-footed spiders
member: comb-footed_spider__theridiid spider having a comb-like row of bristles on each hind foot
member: genus_Latrodectus__Latrodectus venomous spiders
member: black_widow__blackwidow__Latrodectus_mactans venomous New World spider; the female is black with an hourglass-shaped red mark on the underside of the abdomen
member: family_Theraphosidae__Theraphosidae large tropical spiders; tarantulas
member: tarantula large hairy tropical spider that can inflict painful but not highly venomous bites
member: family_Lycosidae__Lycosidae wolf spiders
member: wolf_spider__hunting_spider__huntingspider ground spider that hunts its prey instead of using a web
member: genus_Lycosa__Lycosa type genus of the family Lycosidae
member: European_wolf_spider__tarantula__Lycosa_tarentula large southern European spider once thought to be the cause of tarantism (uncontrollable bodily movement)
member: family_Ctenizidae__Ctenizidae large burrowing spiders
member: trap-door_spider American spider that constructs a silk-lined nest with a hinged lid
member: order_Acarina__Acarina mites and ticks
member: acarine mite or tick
member: tick any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals
member: family_Ixodidae__Ixodidae hard ticks
member: hard_tick__ixodid ticks having a hard shield on the back and mouth parts that project from the head
member: genus_Ixodes__Ixodes type genus of the family Ixodidae
member: Ixodes_dammini__deer_tick a northeastern tick now recognized as same species as Ixodes scapularis
member: Ixodes_neotomae a tick that usually does not bite humans; transmits Lyme disease spirochete to dusky-footed woodrats
member: Ixodes_pacificus__western_black-legged_tick feeds on dusky-footed woodrat and bites humans; principal vector for Lyme disease in western United States especially northern California
member: Ixodes_scapularis__black-legged_tick parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); northern form was for a time known as Ixodes dammini (deer tick)
member: sheeptick__ixodesricinu parasitic on sheep and cattle as well as humans; can transmit looping ill in sheep (acute viral disease of the nervous system); a vector for Lyme disease spirochete
member: Ixodes_persulcatus bites humans; a vector for Lyme disease spirochete
member: Ixodes_dentatus usually does not bite humans; transmits Lyme disease spirochete to cottontail rabbits and woodrats
member: Ixodes_spinipalpis usually does not bite humans; transmits Lyme disease spirochete to cottontail rabbits and wood rats
member: genus_Dermacentor__Dermacentor vectors of important diseases of man and animals
member: wood_tick__American_dog_tick__Dermacentor_variabilis common tick that can transmit Rocky Mountain spotted fever and tularemia
member: family_Argasidae__Argasidae soft ticks
member: soft_tick__argasid tick lacking a dorsal shield and having mouth parts on the under side of the head
member: mite any of numerous very small to minute arachnids often infesting animals or plants or stored foods
member: family_Acaridae__Acaridae mites
member: acarid very small free-living arachnid that is parasitic on animals or plants; related to ticks
member: family_Trombidiidae__Trombidiidae mites
member: trombidiid mite that in all stages feeds on other arthropods
member: family_Trombiculidae__Trombiculidae mites
member: trombiculiid mite that as nymph and adult feeds on early stages of small arthropods but whose larvae are parasitic on terrestrial vertebrates
member: genus_Trombicula__Trombicula type genus of the family Trombiculidae
member: harvest_mite__harvestmite__jigger__redbug larval mite that sucks the blood of vertebrates including human beings causing intense irritation
member: family_Sarcoptidae__Sarcoptidae small whitish mites
member: genus_Sarcoptes__Sarcoptes type genus of the family Sarcoptidae: itch mites
member: itch_mite__sarcoptid whitish mites that attack the skin of humans and other animals; "itch mites cause scabies"
member: acarus a mite of the genus Acarus
member: family_Tetranychidae__Tetranychidae plant-feeding mites
member: spider_mite__tetranychid web-spinning mite that attacks garden plants and fruit trees
member: genus_Panonychus__Panonychus a genus of Tetranychidae
member: red_spider_mite__red_spider__redspider__Panonychus_ulmi small web-spinning mite; a serious orchard pest
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