Laminamichaelia Uusitalo, 2010

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 : 328

Laminamichaelia Uusitalo, 2010

Type species: Bimichaelia arbusculosa Grandjean, 1942 from France; by original designation .

Differential diagnosis. This genus differs from Bimichaelia by the cuticular pattern. The primary pattern of Laminamichaelia may be stellate, i.e. the highly regular polygonal or roundish cells of large lamellae form a rosette around a seta, which is, in turn, also incorporated in the other surrounding rosettes, and the secondary pattern consists mainly of transversely packed lamellae ( Figs. 105 , 119 , 133B ), but the small lamellae are lined up longitudinally one after another in one case (an undescribed Polynesian sp.). The large primary lamellae are clumped in groups connected by rows and lines of transverse secondary lamellae, i.e. the reticular pattern is absent in the subnuda -group ( Figs. 133C, D , an undescribed African and Australian spp.). The primary pattern of Bimichaelia forms roundish to subpolygonal loops of large lamellae and tiny ridges inside loops are granular ( Figs. 133E, F ; Uusitalo 2010: 100, 105). All dorsal setae of Bimichaelia have less than ten, mainly short barbs basally, and difficult to discern against the intrigate cuticular pattern whereas the setae of Laminamichaelia are easily discernible because of several elongated cilia per seta at least on the shoulders and middorsum ( Figs. 133E vs 133A, 106, 120).

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 105−111. Laminamichaelia shibai nom. nov. 105—Prodorsum, holotrichy, ciliated setae vi, sce and in, barbed sensilla ve, button-like naso, reticulated pattern of large lamellae on crista; 106—Dorsal habitus, strong neotrichy; 107—Vental habitus, neotrichy, 4–5 genital setae per valve, 5 anal setae per valve; 108—Straight chelicera; 109—Subcapitulum; 110—Palp tarsus, solenidion supported by 1 eupathid, other one is free; 111—Genital area of female, 5 genital setae per valve, 2 pairs of eugenital setae.

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).