A review of the family Alycidae (Acari, Acariformes) from South Africa Uusitalo, Matti Ueckermann, Edward A. Theron, Pieter D. Zootaxa 2020 2020-10-01 4858 3 301 340 Uusitalo & Ueckermann & Theron, 2020 Uusitalo & Ueckermann & Theron 2020 [151,426,1477,1504] Arachnida Alycidae Pachygnathus GBIF Animalia Actinedida 4 305 Arthropoda species nasutus sp. nov.  ( Figs. 16–28)  Description. Dorsum( Figs. 16, 17). Length 400–420 μm; holotrichous number of setae per segment dorsally, ad- ditional setae of small size on ventral side, soft integument slightly undulating; sclerotic crista from naso to sensillar area, microplates of setae viinseparably linked to crista, setae expsmall, barbed, medial to anterior pair of lateral eye spots.  Venter( Fig. 21). Genital valves each with 13–15 genital setae per valve; 4 anal setae per valve.   Gnathosoma( Figs. 18–20). Chelicera beak-like with a few minute teeth on both chelae, and without cheliceral setae; subcapitulum with three pairs of setae and one pair of smooth adoral setae; four sparsely barbed palpal eupathids, clearly separate from each other.  Legs( Fig 22). Solenidial formula for tarsi, tibiae, genua and femora on legs I, II, III and IV, respectively: 2- 1-0-0, 2-2-2-0, 3\4-2-2-2, 3-0-0-0, solenidion ω2 well moved anteriorly from adaxial end of lyrifissure, famulus I peg-like distally, famulus II a tiny rod abaxially.   FIGURES 1−5.  Alycus augrabiensis  sp. nov.1—Prodorsum, integument mostly soft on crista, i.e. the area from naso to sensilla (from vito ve), expsubequal in size with sce; 2—Dorsal habitus; 3—Integument and setal microplates; 4—Ventral habitus, 18–19 genital setae per valve, 2 eugenitals (female), 5 anal setae per valve on PA (cf. Fig. 2); 5—Genital valve of female, 19 genital setae, 1 pair of eugenital setae.   FIGURES 6−13.  Alycus augrabiensis  sp. nov.6—Rutellum, broad shaft, ventrodistal lobes, and apical point; 7—Subcapitulum, 3 pairs of adorals; 8—Palpal tarsi with 3 pairs of pseudacanthoid eupathids; 9—Genital valve of male, 16 genital setae per valve, 7 (pairs of) eugenitals; 10—Tarsus I (2 solenidia), famulus I (arrow); 11—Tibia I (1 solenidion), Genu I (4 solenidia), Femur I (1 solenidion); 12—Tarsus II (1 solenidion), Tibia II (2 solenidia), Genu II (2 solenidia); 13—Two claws with barbed shafts and a claw-like, oligosetulate empodium.   FIGURES 14−15.  Alycus augrabiensis  sp. nov.14—Tritonymph, genital area, 12 genital setae per valve; 15—Deutonymph, genital area, 7 genital setae per valve. 1–15 from RSA, near Augrabies Falls.   FIGURES 16−22.  Pachygnathus nasutus  sp. nov.16—Prodorsum, sclerotized crista, filamentous sensilla veand sciciliated, setae expsmall; 17—Swollen naso; 18—Beak-like chelicerae, typical to genus; 19—Palp tarsus with 4 pseudacanthoid eupathids; 20—Subcapitulum, 1 pair of adoral setae; 21—Genital valve of female, 13 genital setae, 2 eugenital setae; 22—Tarsus I (2 solenidia), famulus I (arrow), Tibia I (2 solenidia).   FIGURES 23−28.  Pachygnathus nasutus  sp. nov.23—Genital valve of male, 15 genital setae per valve, 10 pairs of eugenitals; 24—Deutonymph, genital area, 5 genital setae per valve; 25—Protonymph, genital area, 1 genital seta per valve; 26—Protonymph, subcapitulum; 27—Dorsal habitus of larva, holotrichy, sensilla veand scislightly swollen, 1 pair of palpal eupathids; 28—Ventral habitus of larva, genital area absent, 3–4 anal setae per valve. 16−28 from RSA, near Potchefstroom. Larva (n=1, Figs. 27, 28)  Dorsum.Length 180 μm, holotrichous, sensillae veand scislightly swollen, setae longest on caudal segments.  Venter.Genital area absent, 3–4 anal setae per valve.   Gnathosoma.1 pair of palpal eupathids.  Legs.Empodia clawless, solenidial formula for tarsi, tibiae, genua and femora on legs I, II and III, respectively: 1-1-0, 2-2-2, 3-2-2, 1-0-0. Other life stages: Protonymph (n=3, Figs. 25, 26), 1 genital seta per valve, subcapitulum with 2 pairs of setae and one pair of adoral setae. Deutonymph (n=4; Fig. 24), 5 genital setae per valve. Adult male (n=5; Fig. 23), 13−15 genital setae per valve, 10 pairs of eugenitals. Adult female (n=7; Fig. 21), 13−15 genital setae per valve, 1 pair of eugenital setae.   Type material.  Holotypefemale, 6 paratype females, 5 paratype males, 4 paratypedeutonymphs, 3 paratypeprotonymphs and 1 paratype larva, from soil under  Maytenus cymosa(Celastraceae), vicinity of Potchefstroom, NORTH-WEST PROVINCE,  13 April 1972, J.A. van Huyssteen. Depositedat ARC-Plant Health and Protection, Pretoria, South Africa.   Differential diagnosis.This species can easily be differentiated from the neotrichous species of the genus by having a holotrichous dorsum in all stages ( Fig. 27), and femora I with 3 solenidia (instead of 2 or 5–7).   Etymology.The species name refers to the prominent naso. 3034037316 1972-04-13 J. A. van Huyssteen. Deposited South Africa South Africa 10 311 19 6 1 5 holotype