Trhypochthonius, Berlese, 1904

Leg setal ontogeny of Trhypochthonius View in CoL

Appendix 3 presents the ontogeny of leg setiform organs in an unidentified species of Trhypochthonius from South Africa. Notable traits include; the presence of four larval setae (including cʺ) on tibia I, with a final complement of five; the absence of cʺ from larval tibia II, with a final complement of five; the absence of several fundamental tarsal setae, including the primilateral pair ( pl) from tarsus I, primiventral setae ( pv) from tarsi II and III, and fastigial seta ftʹ from tarsus III. Antelateral ( a) setae are not formed on tarsus IV. Regarding accessory setae, the iteral pair ( it) are absent and the adult forms proximal seta l A ʹ on tarsus I and pair ( v A) on tarsi I–IV.