Pterygosoma ligare

Fajfer, Monika & Acuña, Daniel González, 2013, Pterygosomatid mites of a new species group ligare (Acariformes: Pterygosomatidae: Pterygosoma) parasitizing tree iguanas (Squamata: Liolaemidae: Liolaemus), Zootaxa 3693 (3), pp. 301-319 : 318

Key to females of the ligare group

1. 5 setae on genu I and 3 setae on femur IV, 5 setae ps, seta ft on tarsi IV absent..................................... 2

-. 4 setae on genu I and 2 setae on femur IV, 3 setae ps, seta ft on tarsi IV present................... P. f o r m os u s ( Figs. 4–6)

2. 5 setae on femur II.................................................................................... 3

-. 4 setae on femur II................................................................ P. chilensis ( Figs. 13–15)

3. Coxa setation: 2 - 1-4 -0, all setae situated on coxal fields, except for 3 a on intercoxal area, gnatosoma situated apically...... 5

-. Coxa setation: 3 - 1-4 -0, all setae located on coxae I–IV, except for 1 a and 3 a situated on intercoxal area, gnatosoma displaced on dorsal side......................................................................... P. ovata ( Figs. 7–9)