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Rare Animal Species Profiles (G1-G2)
The species listed below are ones that have been assigned high global ranks (G1-G2). A high global rank generally implies that a species is very rare and possibly threatened with extinction/extirpation (see Global Ranks for details). Federally listed animal species possess high global ranks but are not listed here. Information on those species can be found by visiting Profiles of Federally Listed Animal Species. Several of the species below are state or regional endemics that, while being locally common in some areas, are restricted to Arkansas or to a particular ecoregion and are rare globally.
Arthropods
- Allocapnia jeanae A winter stonefly
- Allocapnia oribata Bowed snowfly
- Allocapnia ozarkana A winter stonefly
- Alloperla caddo Caddo sallfly
- Apochthonius diabolus Cave pseudoscorpion
- Apochthonius titanicus Cave pseudoscorpion
- Arianops sandersoni Magazine Mountain mold beetle
- Bouchardina robisoni A crayfish
- Caecidotea macropropoda Bat cave isopod
- Cambarus causeyi A crayfish
- Crosbyella distincta Cave harvestman
- Crosbyella roeweri Cave harvestman
- Fallicambarus gilpini A crayfish
- Fallicambarus harpi A crayfish
- Fallicambarus jeanae A crayfish
- Fallicambarus petilicarpus A crayfish
- Fallicambarus strawni A crayfish
- Faxonella blairi A crayfish
- Hydroporus sulphurius Sulphur Springs hydroporus diving beetle
- Isoperla szczytkoi Magazine stripetail
- Leuctra paleo Arkansas needlefly
- Lirceus bidentatus An isopod
- Orconectes eupunctus Coldwater crayfish
- Orconectes marchandi Mammoth Spring crayfish
- Orconectes williamsi Williams crayfish
- Paduniella nearctica Nearctic paduniellan caddisfly
- Paraleptophlebia calcarica A mayfly
- Procambarus ferrugineus A crayfish
- Procambarus reimeri A crayfish
- Pseudosinella dubia A springtail
- Rimulincola divalis A beetle
- Stygobromus elatus Elevated spring amphipod
- Stygobroums montanus Mountain cave amphipod
- Trigenotyla parca A cave millipede
- Zealeuctra wachita Ouachita needlefly
- Cyprogenia aberti Western fanshellk
- Lampsilis satura Sandbank pocketbook
- Millerelix peregrina White liptooth
- Obovaria jacksoniana Southern hickorynut
- Patera clenchi Calico rock oval
- Pleuroblema rubrum Pyramid pigtoe
- Pyrgulopsis ozarkensis Ozark pyrg
- Stenotrema pilsbryi Rich Mountain slitmouth
- Stenotrema unciferum Ouachita slitmouth
- Toxolasma lividus Purple liliput
- Villosa arkansasensis Ouachita creekshell
- Xolotrema occidentale Arkansas wedge
- Noturus lachneri Ouachita madtom
- Noturus taylori Caddo madtom
- Plethodon caddoensis Caddo Mountain salamander
- Plethodon fourchensis Fourche Mountain salamander
- Plethodon kiamichi Kiamichi slimy salamander
- Plethodon sequoyah Sequoyah slimy salamander
