Amblyseius chanti Zannou, Moraes & Oliveira

Zannou, Ignace D., De, Gilberto J., Ueckermann, Eddie A., Oliveira, Anibal R., Yaninek, John S. & Hanna, Rachid, 2007, Phytoseiid mites of the subtribe Amblyseiina (Acari: Phytoseiidae: Amblyseiini) from sub-Saharan Africa, Zootaxa 1550, pp. 1-47 : 23-25

Amblyseius chanti Zannou, Moraes & Oliveira , n. sp.

( Fig. 14 )

DIAGNOSIS—Seta Z1 present; setae Z5 shorter than distance between their bases; ratios s4:Z1 = 5.7, s4:S2 = 5.7. Ventrianal shield subtriangular. Fixed cheliceral digit with 10 teeth. Genu of leg I with a macroseta. Spermatheca with calyx cup-shaped; atrium nodular, excentrically connected to calyx and tilted towards it, apposing surface of insertion of minor duct to adjoining calyx extremity.

FEMALE—(Specimens measured—Zambia: 9). Idiosomal setal pattern 10A:9B/JV-3:ZV.

Dorsum ( Fig. 14 A)—Dorsal shield smooth, 375(355–400) long and 246(239–269) wide. Setae j1 24, j3 30(27–35), j4 7(6–7), j5 6(6–7), j6 8, J2 9(7–10), J5 7(7–8), z2 9(8–10), z4 8(7–9), z5 6(6–7), Z1 9(8–11), Z4 73(71–78), Z5 86(82–93), s4 51 (48–55), S2 9 (8–10), S4 10 (10–12), S5 8 (8–9), r3 12(11–12), R1 9(8–10). Setae smooth, except Z4 and Z5, serrate.

Peritreme—Extending beyond level of j1.

Venter ( Fig. 14 B)—Sternal shield mostly smooth, with few lateral striae; posterior margin straight; distances between St1-St3 62(60–63), St2-St2 69(67–72). Genital shield smooth; distance between St5-St5 75(72–79). Ventrianal shield smooth, subtriangular, anterior margin slightly concave, 124(119–130) long, 107(102–115) wide at level of Zv2 and 93(85–98) wide at level of anus; preanal pores elliptical, mesad and slightly posterior to Jv2. Two pairs of metapodal shields.

Chelicera ( Fig. 14 C)—Movable digit 33(32–35) long, with 3 teeth; fixed digit 26(26–28) long, with 10 teeth and a pilus dentilis.

Spermatheca ( Fig. 14 D)—Calyx cup-shaped, 12(10–14) long; atrium nodular, excentrically connected to calyx and tilted towards it, apposing surface of insertion of minor duct to adjoining calyx extremity.

Legs—Sharp-tipped macrosetae: Sge I 29 (28–31), Sge II 28 (25–30), Sge III 32 (29–36), Sti III 22 (20–24), Sge IV 62 (57–67), Sti IV 43 (40–45), St IV 62 (59–67); presence of a prominent erect seta at base of tarsus I.

MALE—(Specimen measured—Zambia: 1).

Dorsum—Dorsal shield pattern as in female, 295 long and 216 wide. Setae j1 19, j3 19, j4 5, j5 5, j6 broken, J2 6, J5 6, z2 7, z4 8, z5 6, Z1 7, Z4 54, Z5 58, s4 35, S2 7, S4 7, S5 6, r3 10, R1 7. Setae smooth, except Z4 and Z5, serrate.

Peritreme—Extending beyond level of j1.

Venter ( Fig. 14 G)—Ventrianal shield subtriangular, with transverse striae anterior to Jv1, 122 long, 150 wide at the anterior corners; with 4 pairs of lyrifissures (1 laterad and well anterior to Jv1, 1 laterad and slightly anterior to Jv1, 1 laterad and well anterior to Zv2 and 1 laterad and slightly posterior to Zv2) and a pair of elliptical preanal pores, mesad and slightly posterior to Jv2.

Spermatodactyl ( Fig. 14 F)—L-shaped; shaft 17 long.

Legs—Sharp-tipped macrosetae: Sge I 24, Sge II 21, Sge III 19, Sti III 19, Sge IV 41, Sti IV 31, St IV 55.

LOCALITY AND TYPE MATERIAL—Holotype female from Citrus aurantium , 50 km SE Mporokoso, Zambia, 15-VI-1992, J.S. Yaninek, deposited at ESALQ-USP; 1 paratype female from Julbernadia globiflora , 50 km SE Mporokoso, Zambia, 15-VI-1992, A. Onzo, deposited at ESALQ-USP; 1 paratype female from Uvariastrum hexaloboides, Lumangwe Falls , Zambia, 14-VI-1992, A. Onzo, deposited at IITAIM; 3 paratype females from Monotes angolensis, Lumangwe Falls , Zambia, 14-VI-1992, A. Onzo, deposited at IITAIM; 2 paratype females and 1 allotype male from Uapaca kirkiana, Lumangwe Falls , Zambia, 14-VI- 1992, A. Onzo, deposited at ESALQ-USP; 1 paratype female from Combretum mechowianum , 63 km E Kawambua, Zambia, 14-VI-1992, A. Onzo, deposited at ESALQ-USP.

ETYMOLOGY—This species is named in honor of the eminent acarologist Donald A. Chant, for his outstanding contribution to the knowledge of the phytoseiid taxonomy.

REMARKS— Amblyseius andersoni ( Chant, 1957) and A. swirskii Athias-Henriot, 1962 differ from this species by having dorsal shield with some lateral striae, Z4 and s4 sub-equal in length and ventrianal shield subpentagonal. In addition, the former species has Z5 at least twice as long as Z4 and s4. Amblyseius genya Pritchard & Baker, 1962 , A. neorykei Gupta, 1977 and A. tsugawai Ehara, 1959 also differ from this new species by having ventrianal shield subpentagonal. Furthermore, A. genya has j3 more than twice as long as j1 and Sge IV at least ca. twice as long as Sti IV and St IV; A. neorykei has j1 ca. 0.5 times as long as j3; while A. tsugawai has ventrianal shield reticulate, Z4 as long as s4 and Z5 ca. 2.5 times as long as Z4 and s4.

Figures

FIGURE 14. Amblyseius chanti Zannou, Moraes & Oliveira, n. sp.: A. Female dorsal shield; B. Female ventral surface; C. Female chelicera; D. Spermatheca; E. Female leg IV; F. Spermatodactyl; G. Male ventrianal shield.