Arrenoseius robertogonzalezi Trincado & Martin, 2018

Trincado, R. D., Martin, J. P. I., Méndez Rosa, D. D., Lopes, P. C. & De Moraes, G. J., 2018, Phytoseiid mites (Acari: Phytoseiidae) from Chile, with descriptions of three new species and a redescription of Chileseius camposi, Zootaxa 4482 (2), pp. 322-340 : 324-325

Arrenoseius robertogonzalezi Trincado & Martin , n. sp.

Diagnosis. This species is most similar to Arrenoseius morgani ( Chant, 1957) , but the latter differs by having much longer j 1, j 3, s 4, Z 4 and Z 5 and the much shorter z 2 and z 4, and by having no teeth on the movable cheliceral digit.

Female: (4 specimens measured)

Dorsum ( Fig. 1 ). With seven distinguishable pairs of pores and 11 distinguishable pairs of lyrifissures; 389 (360–407) long, 320 (300–330) maximum width; j 1 17 (16–18), j 3 25 (24–26), j 4 8 (7–9), j 5 8 (6–9), j 6 8 (6–9), J 2 8 (7–9), J 5 10 (8–11), z 2 16 (14–18), z 4 24 (23–25), z 5 6 (6–7), Z 1 11 (10–12), Z 4 71 (68–75), Z 5 89 (85–96), s 4 54 (50–57), S 2 17 (15–18), S 4 15 (14–16), S 5 17 (15–19), r 3 21 (20–22), R 1 16 (15–17). All setae smooth.

Peritreme ( Fig. 1 ). Extending forward to level of j 1.

Venter ( Fig. 2 ). Sternal shield reticulate; with two pairs of lyrifissures; distances between St 1– St 3 61 (60–64), St 2– St 2 64 (60–65). Genital shield with striae forming an inverted U-shaped pattern; distance between St 5– St 5 92 (89–94). Ventrianal shield reticulate, shield-shaped 123 (120–130) long and 142 (100–165) wide at ZV 2 level, with three pairs of pre-anal setae and a very pair of small, rounded pre-anal pores posteromesad of JV 2. Seta JV 5 50 (50–51). All ventral setae smooth. Two pairs of metapodal plates, the inner rounded and much smaller than the elongate outer pair.

Chelicera ( Fig. 3 ). Antiaxial lyrifissure distinct. Fixed digit 34 (33–35) long, with eight teeth in addition to apical tooth and setiform pilus dentilis. Movable digit 35 (35–36) long, with two teeth in addition to apical tooth.

Legs ( Fig. 4 ). Macroseta present only on tarsus IV, 61 (60–64). Chaetotaxy of genu II 2 2/1, 2/0 1; genu III 1 2/ 1, 2/0 1.

Spermatheca ( Fig. 5 ). Calyx saccular, 18 (17–20) long. Atrium distinct.

Etymology. This species is named after Prof. Roberto H. González, eminent Chilean acarologist and entomologist, who regretfully passed away recently.

Type locality: Holotype female collected on 2 April 1991, from Municipality of Buin, Santiago Region, Chile, on Festuca sp. Deposited at Departamento de Entomologia e Acarologia, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo. Three paratype females collected on 9 July 2012, from Quinta de Tilcoco, O’Higgins Region, Chile, on Viburnum tinus L., associated with Tydeidae ; all deposited at Departamento de Entomologia e Acarologia, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo. Two paratype females collected on 5 November 2002, from San Pedro, Santiago Region, on Passiflora incarnata L, associated with Tydeidae , deposited at Museo Nacional de Historia Natural, Santiago to Chile.

Figures

FIGURES 1–5. Arrenoseius robertogonzalezi n. sp. Female. 1. Dorsal view of idiosoma; 2. Ventral view of idiosoma; 3. Antiaxial view of chelicera; 4. Leg IV; 5. Spermatheca.