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Great Smoky Mountains National Park

Illustrated Key to Pseudoscorpions: Superfamily Chthonioidea

Genera recorded from the GSMNP are listed in purple type. Genera recorded from elsewhere in Tenneessee and North Carolina are recorded in black type.

Carapace with more than 50 setae; spiracles oblique and with distinct sclerites
Family Tridenchthoniidae, Verrucaditha

Carapace with less than 30 setae; spiracles transverse and witout distinct sclerites
Family Chthoniidae- go to Couplet 2

Coxal spines only on coxae I
go to Couplet 3

Coxal spines not confined to coxae I
go to Couplet 4

Marginal teeth of chelal fingers small and contiguous
Apochthonius

Marginal teeth of chelal fingers, at least in part, tall, sharp, and widely spaced, and usually with alternating microdenticles
Kleptochthonius

Coxal spines only on coxae II
go to Couplet 5

Coxal spines on coxae II and III
Chthonius

Marginal teeth of chelal fingers small and contiguous
Mundochthonius

Marginal teeth of chelal fingers tall, sharp, and widely spaced, often with alternating microdenticles
Tyrannochthonius