Walchia Ewing, 1931 Diagnosis SIF = 4(5)B-N-3-2(1)110.0000; fsp = 7.6.6; fSt = 2.2; fCx = 1.1.1; Ip = 320–800. Cheliceral blade with tricuspid cap, but dorsal cuspid can look like large hook (Stekolnikov & Daniel 2012; Chaisiri et al. 2016); galeal setae nude; palpal claw 3-pronged; palpal femoral, genual and tibial setae usually nude; palpal tarsus with 4–5 branched setae. Scutum subpentagonal, with posterior margin angulate or rounded, AM setae absent, 2 AL and 2 PL setae, sensilla expanded, fusiform to globose. Eyes 2 + 2 or 1 + 1, rarely absent. Leg I 7-segmented, legs II and III 6-segmented; 2 (sometimes 1) genualae I; genuala II and III present (rarely absent); tibiala III absent.

Published as part of Stekolnikov, Alexandr A., 2018, Taxonomy and distribution of African chiggers (Acariformes, Trombiculidae), pp. 1-233 in European Journal of Taxonomy 395 on page 34, DOI: 10.5852/ejt.2018.395, http://zenodo.org/record/3829724