Laminamichaelia furcula,

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: 332

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Laminamichaelia furcula

sp. nov.

Laminamichaelia furcula  sp. nov.

( Figs. 119–132View FIGURES 119−125View FIGURES 126−130View FIGURES 131−132)

Description. Dorsum ( Figs. 119, 120View FIGURES 119−125). Length 560 μm; primary pattern comprising stellate rosettes of about 8, often trigonal, cells around a seta and 5–6 setae at the orbit, secondary pattern of densely packed small lamellae in rows inside cells, tens (ca. 30) of cilia per seta, dorsal and ventral neotrichy well developed; additional setae on soft prodorsum and in -area, roundish naso with fine striae, tripartite crista flanked by strips of large lamellae and a midline with polygons from naso to sensillar area, densely ciliated sensilla ve branched distally.

Venter ( Figs. 121, 124View FIGURES 119−125). Sclerotized genital valves each with 9–10 genital setae; anal setae 7–8 per valve.

Gnathosoma  ( Figs. 122, 123View FIGURES 119−125). Chelicerae straight; subcapitulum neotrichous; palpal solenidion in contact with two eupathids.

Legs ( Figs. 125–127View FIGURES 119−125View FIGURES 126−130). Solenidial formula for tarsi, tibiae, genua and femora on legs I, II, III and IV, respectively: 3B-2B-0-0, 2B1P-2B-2B-1B, 4P-1B2P-1P-1P, 3P-1B-0-0, baculiform solenidia on tibiae I, II and III clearly separated from each other, rod-like famulus I abaxially near distal end of tarsus I.

Larva (n=20, Figs. 131, 132View FIGURES 131−132)

Dorsum. Neotrichous.

Venter. Neotrichous; genital valves absent.

Legs. Solenidial formula for tarsi, tibiae, genua and femora on legs I, II, and III, respectively: 1B-1B-0, 2B-2B- 2B, 3P-1B1P-1P, 2P-1B-0.

Other life stages:

Protonymph (n=2, Fig. 130View FIGURES 126−130), 1 genital seta per valve.

Deutonymph (n=6, Fig. 129View FIGURES 126−130), 4 genital setae per valve.

Tritonymph (n=1, Fig. 128View FIGURES 126−130), 6–7 genital setae per valve.

Adult female (n=5, Figs. 121, 124View FIGURES 119−125), 9–10 genital setae per valve, 3 pairs of eugenital setae.

Type material. Holotype female from Acacia  -biotope, Potchefstroom, NORTH-WEST PROVINCE, 8 May 1967, P.D. Theron; one paratype female from Acacia  -biotope, Potchefstroom, 12 December 1967, P.D. Theron; one paratype female from kikuyu grass, Potchefstroom, May 1967, C.A. Verhoop; one paratype tritonymph, 2 paratype deutonymphs, 2 paratype protonymphs, and 2 paratype larvae from Acacia  -biotope, Potchefstroom, 15 May 1967, P.D. Theron; 3 deutonymphs from Acacia  -biotope, Potchefstroom, 23 August 1967, P.D. Theron; 2 paratype females, from Acacia  -biotope, Potchefstroom 5 May 1969, P.D. Theron; one paratype deutonymph from Acaciabiotope, Potchefstroom, 3 March 1969, P.D. Theron. Deposited at ARC-Plant Health and Protection, Pretoria, South Africa.

Differential diagnosis. This species has character states typical of the arbusculosa  -group, such as the stellate pattern of large lamellae, presence of additional plumose setae on both the soft prodorsum and sclerotized in -area and three baculiform solenidia on tarsi I ( Figs. 119, 125View FIGURES 119−125). The species is closely related to L. arbusculosa  , which also has branched sensilla ve ( Uusitalo 2010: fig. 130), but can be segregated from it by having famulus I in a distal position (not close to solenidion ω2) and a clear gap between the two baculiform solenidia on tibiae I, II and III.

Etymology. The specific name is a feminine gender of the Latin word furculus meaning small fork and refers to the forked sensilla ve.