Taxonomy and distribution of African chiggers (Acariformes, Trombiculidae) Author Stekolnikov, Alexandr A. 576D9065-0E85-4C5C-B00F-B907E3005B95 Zoological Institute, Russian Academy of Sciences, Universitetskaya embankment 1, St. Petersburg 199034, Russia. Alexandr.Stekolnikov@zin.ru text European Journal of Taxonomy 2018 2018-01-16 395 1 233 journal article 10.5852/ejt.2018.395 10dbb315-5662-4069-a1ae-9692fdf99499 2118-9773 3829724 A244F97F-8CEB-40CE-A182-7E5440337CAA Mastalacarus Goff & Lukoschus, 1983 Diagnosis SIF = 5B-B-2-1011.5322; fPp = B/B/BBB; fsp = 6.6.6; fSt = 0.2; fCx = 2.1.1; Ip = 715–743. Cheliceral blade with dorsal subapical tooth and ventral teeth; galeal setae branched; palpal claw 2-pronged, axial prong internal; palpal tarsus with 5 branched setae. Scutum pentagonal, with nasus, 2 AM, 2 AL and 2 PL setae; sensilla flagelliform, with barbs in proximal ¾. Eyes 2 + 2; tracheae and stigmae absent; 2 pairs of ventrohumeral setae between coxae II and III. Legs 6-segmented, onychotriches absent, parasubterminala I present, 1 genuala I, genuala II absent, genuala and tibiala III present, multiple mastisetae on leg III.