Euseius

Gonçalves, Dinarte, Silva, Guilherme Liberato Da & Ferla, Noeli Juarez, 2013, Phytoseiid mites (Acari) associated with yerba mate in southern Brazil, with description of a new species, Zootaxa 3746 (2), pp. 357-371 : 362

Euseius ho (De Leon)

Amblyseius (Euseius) ho De Leon, 1965: 125.

Euseius ho.— Denmark & Muma, 1973: 262; Moraes & McMurtry, 1983: 139; Moraes et al., 1991: 132, 2004: 71; Chant & McMurtry, 2005a: 215; 2007: 121; Guanilo et al., 2008a: 21.

Specimens examined. ILÓPOLIS: (I), September 2002 (2); December 2002 (1); February 2003 (1); March 2003 (1); April 2003 (3); May 2003 (1); June 2003 (7); July 2003 (2); September 2003 (31); October 2003 (7); November 2003 (2); February 2004 (1); April 2004 (3); July 2004 (1); August 2004 (1); (H), December 2002 (1); July 2003 (3); August 2003 (12); October 2003 (4); November 2003 (2); December 2003 (3); February 2004 (2); April 2004 (1); (N), April 2003 (3); July 2003 (4); August 2003 (1); September 2003 (3); November 2003 (1); December 2003 (1); February 2004 (1); April 2004 (8); June 2004 (3); July 2004 (5); August 2004 (3); (M), March 2003 (2); September 2003 (12); October 2003 (2); November 2003 (1); December 2003 (3); August 2004 (2). PUTINGA: (I), September 2003 (1); (H), August 2003 (1); March 2004 (1); (N), October 2003 (2); (M), November 2003 (1); September 2004 (1).

Adult Female. Ten specimens examined.

Dorsum. Dorsal shield with 331 (305–345) long, 221 (218–225) wide at level of s4; j1 29 (28–30), j3 29 (28– 30), j4 10, j5 10 (8–12), j6 13, J2 14 (13–15), J5 5, z2 15, z4 19 (18–20), z5 10, Z1 13, Z4 16 (13–18), Z5 54 (53– 55), s4 31 (28–33), S2 17 (15–18), S4 19 (18–20), S5 21 (18–23), r3 16 (13–18), R1 12 (10–13).

Venter. Distances between St1–St3 59 (50–63), St2–St2 68 (55–78) and St5–St5 77 (75–80). Ventrianal shield with 102 (90–110) long, 59 (55–63) wide at level of ZV2 and 73 (68–78) wide at level of anus.

Chelicera. Fixed digit 25 long and movable digit 24 (23–25) long.

Spermatheca. Calyx 21 (18–25) long.

Legs. Sge II 24 (23–25); Sge III 27 (25–28) and Sti III 24 (23–25); Sge IV 36 (33–38), Sti IV 25 (20–30) and St IV 50 (45–55).

Previous records in Rio Grande do Sul. Capitão (Ferla et al., 2005); Bento Gonçalves and Encruzilhada do Sul (Johann et al., 2009); Bento Gonçalves (Klock et al., 2011); Bento Gonçalves, Encruzilhada do Sul, Dois Lajeados and Boqueirão do Leão (Ferla et al., 2011); Ilópolis (Marchetti & Ferla, 2011); Venâncio Aires and Roca Sales (Eichelberger et al., 2011); Arvorezinha, Encantado and Taquari (Horn et al., 2011).

Comments. Measurements of our specimens are similar to those in the original description (De Leon, 1965). This species has been reported on citrus, yerba mate and grapevine in Rio Grande do Sul state (Ferla et al., 2005; Ferla et al., 2011). Euseius species are the most common on native vegetation in that state (Ferla & Moraes, 2002).