#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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