Euseius oligodous Moraes, Zannou & Oliveira

De Moraes, G. J., Zannou, I. D., Oliveira, A. R., Yaninek, J. S. & Hanna, R., 2006, Phytoseiid mites of the subtribes Typhlodromalina and Euseiina (Acari: Phytoseiidae: Euseiini) from sub­Saharan Africa, Zootaxa 1114, pp. 1-52 : 46-48

Euseius oligodous Moraes, Zannou & Oliveira , sp. nov. ( Fig. 23 )

DIAGNOSIS — This species is distinct by a combination of the following characteristics: long peritreme (reaching base of j1), reticulate dorsal shield, Jv1 inserted near anterior margin of ventrianal shield and distinctly knobbed macrosetae on legs.

FEMALE — (2 specimens measured).

Dorsum — Dorsal shield reticulate, 335(334–337) long and 225 wide. Setae j1 27(26– 28), j3 14, j4 11, j5 12(11–12), j6 12(11–12), J2 14, J5 9(8–9), z2 16(15–17), z4 14, z5 11, Z1 14(13–14), Z4 15(14–15), Z5 57(55–58), s4 18 (17–18), S2 16, S4 20 (19–20), S5 18 (17–19), r3 16(15–16), R1 14(13–14). All setae smooth, except Z5 which is lightly serrate.

Peritreme — Extending to level of j1.

Venter — Distances between St1–St3 55(54–55), St2–St2 68(67–68), St5–St5 75. Ventrianal shield 105 long, 58 wide at level of Zv2 and 67(65–69) wide at level of anus, with a pair of elliptical pores slightly posteromesad of Jv2. Two pairs of metapodal shields; caudoventral setae smooth and sharp­tipped.

Chelicera — Movable digit 27(26–27) long, with 1 small tooth; fixed digit 25 long, with 4 small teeth and a discernible pilus dentilis.

Spermatheca — Calyx funnel­shaped, 15(14–15) long; atrium elongate.

Legs — Macrosetae knobbed; Sge II 19, Sge III 26 (25–26), Sti III 23 (22–23), Sge IV 38, Sti IV 31 (30–31), St IV 44 (43–44). Chaetotaxy of genu III: 1­2/1,2/0­1.

MALE — Unknown.

LOCALITY AND TYPE MATERIAL — Holotype female and 1 paratype female from Anisophyllea boehmii , 30 km S Kasama, Zambia, 16­VI­1992, A. Onzo, deposited at ESALQ­USP.

ETYMOLOGY — The epithet oligodous refers to the presence of few teeth on the fixed cheliceral digit of this new species.

REMARKS — Euseius parcidentatus is similar to this new species, but it differs by having shorter dorsal shield setae, S4 inserted very close to dorsal shield margin, longer and strongly knobbed macrosetae on legs III and IV and shorter atrium of spermatheca.

Figures

FIGURE 23. Euseius oligodous Moraes, Zannou & Oliveira, sp. nov. (female): A. Dorsal shield; B. Ventral surface; C. Spermatheca; D. Chelicera; E. Leg IV.