Bimichaeliini Womersley, 1944

Uusitalo, Matti, Ueckermann, Edward A. & Theron, Pieter D., 2020, A review of the family Alycidae (Acari, Acariformes) from South Africa, Zootaxa 4858 (3), pp. 301-340 : 325

Bimichaeliini Womersley, 1944

Type genus: Bimichaelia Thor, 1902 .

Differential diagnosis. The lineage and tribe can be separated from its sister group by having the large lamellae either in cells ( Figs. 119 , 133A, B ) or in clumps ( Figs. 133C, D ) on soft integument, having lost their eyes and cheliceral setae, and femora IV are not divided. Otherwise, they share all the typical bimichaeliine character states, such as presence of a button-like naso, clavate sensilla sci, stylet-like chelicerae, and an apical palpal solenidion in contact with TP-type eupathid(s).

Remark. The tribe Bimichaeliini is a sister group of the monotypic tribe Proteromichaeliini established above and includes all the other genera of the subfamily Bimichaeliinae . The generic name Bimichaelia Thor, 1902 was proposed as a nomen novum for Michaelia Berlese, 1884 (preoccupied, non Michaelia Trouessart, 1884 ), see Uusitalo (2010: 64).

Figures

FIGURE 133. Primary and secondary patterns of cuticle in the tribe Bimichaeliini (Bimichaeliinae). A, B—stellate primary pattern by large lamellae, secondary pattern by small lamellae, setae prominent in Laminamichaelia sp. of arbusculosa-group, C, D—primary pattern by clumps of large lamellae connected by small lamellae, setae prominent in Laminamichaelia sp. of subnuda-group, E, F—primary pattern by roundish cells of large lamellae, secondary pattern by small granulae, setae inconspicuous in Bimichaelia sp. Abbreviations: Ch—chelicera, P—palp, Gen—genitalia, C, D, E, F, H, PS—segments of opisthosoma.

FIGURES 119−125. Laminamichaelia furcula sp. nov. 119—Prodorsum, neotrichous soft integument and in-area, sensilla ve branched, button-like naso, reticulated pattern of large lamellae on crista between strips; 120—Dorsal habitus, strong neotrichy; 121—Vental habitus, neotrichy, 9–10 genital setae per valve, 7–8 anal setae per valve; 122—Palp tarsus; 123—Subcapitulum, neotrichy; 124—Genital area, 10 genital setae per valve, 3 pairs of eugenital setae; 125—Tarsus I (3B), famulus I (arrow), Tibia I (3B1P).