Typhlodromalus parcidentatus, Zannou, I. D., De Moraes, G. J. & Hanna, R., 2002

Zannou, I. D., De Moraes, G. J. & Hanna, R., 2002, New species of phytoseiid mites from Mozambique and Malawi, Zootaxa 79, pp. 1-6 : 2-4

1. Typhlodromalus parcidentatus n. sp.

DIAGNOSIS ­ Females of this new species are similar to those of Amblyseius rhusi ( Van der Merwe, 1965), but differ from them by the absence of distinct metasternal shields, much longer setae Z5, stouter and knobbed macrosetae on legs III and IV, and in that males of this new species do not have distinct notches lateral to preanal pores.

FEMALE – ( Figs. 1 A­1E) (5 specimens measured).

Dorsum – Dorsal shield with diagonal striae, 328 (313­343) long and 248 (240­250) wide at widest level of the proscutum. Setae j1 29 (26­30), j3 9 (8­9), j4 8 (6­9), j5 8, j6 8 (6­8), J2 10, J5 5, z2 9 (8­10), z4 9 (8­10), z5 8, Z1 8 (8­9), Z4 10 (10­11), Z5 57 (55­60), s4 14 (13­15), S2 13 (10­15), S4 12 (10­13), S5 11 (10­13), r3 11 (10­11), R1 10 (9­10). Seta Z5 serrated; other setae smooth.

Peritreme – Extending to the level of insertion of j1.

Venter – All shields smooth and well sclerotized, except for posterior margin of sternal shield. Sternal shield with 3 pairs of setae and 2 pairs of lyrifissures. Setae st4 on integument. Distances between setae st1­st3 57 (54­58), st2­st2 72 (70­73), st5­st5 72 (70­75). With a pair of metapodal shields. Ventrianal shield vase­shaped, 103 (95­108) long, 54 (53­55) wide at level of ZV2 and 74 (70­78) wide at level of anus, with 3 pairs of preanal setae and a pair of pores posterior and slightly mesad to JV2.

Chelicera – Movable digit 26 (26­27) long, with 1 tooth; fixed digit 28 (28­29) long, with 5 teeth distally located on the inner edge of the digit and a pilus dentilis. Spermatheca – Calyx 32 (30­33) long, funnel­shaped and bulged proximally; atrium distinct.

Legs – With knobbed macrosetae on legs III and IV: Sge III 31 (28­33), Sti III 23 (21­ 25), Sge IV 47 (43­48), Sti IV 31 (28­33) and St IV 57 (53­60). No macrosetae on other legs. Chaetotaxy of genu II 2 ­(2,2)/0­1 and genu III 1­2 /1­2/0­1.

MALE – ( Figs. 1 F & 1G) (5 specimens measured).

Dorsum – Dorsal shield with diagonal striae, 253 (253­255) long, 178 (176­181) wide at the widest level of proscutum. Setae j1 21 (20­22), j3 6 (6­7), j4 7 (6­8), j5 8 (7­8), j6 8 (7­9), J2 9 (9­10), J5 5 (4­5), z2 7, z4 9 (9­10), z5 8 (7­8), Z1 9 (9­10), Z4 10 (10­11), Z5 45 (42­46), s4 13 (13­14), S2 12 (11­12), S4 10 (10­11), S5 10, r3 10 (9­11), R1 9 (8­10). Seta Z5 serrated, other setae smooth.

Peritreme – Extending forward to level of insertion of z2.

Venter – Ventrianal shield sub­triangular, 93 (93­94) long, 143 (141­145) wide at anterior corners, with transverse striae anteriorly, 3 pairs of preanal setae, 4 pairs of small pores, one anterior to JV1 and 3 anterolateral, and a pair of large pores slightly posteromesad to JV2.

Spermatodactyl – Shaft 22 (20­23) long.

Legs – With knobbed macrosetae on legs III and IV: Sge III 21 (21­22), Sti III 20 (19­ 20), Sge IV 33 (31­35), Sti IV 28 (28­29) and St IV 41 (41­42). No macrosetae on other legs. Chaetotaxy of genu II 2 ­(2,2)/0­1 and genu III 1­2 /1­2/0­1.

LOCALITY AND TYPE MATERIAL – Holotype female, allotype male, 1 paratype female and 1 paratype male from Mangifera indica, Muecate , Mozambique, 19­IV­2000, leg. I. Zannou ( ESALQ / USP); 1 paratype female and 1 paratype male, same data as holotype (IITAIM­Benin) and 1 paratype female from Anacardium occidentale , 2 km N. Muecate, Mozambique 19­IV­2000, leg. I. Zannou (IITAIM­Benin); 1 paratype female from Pennisetum glaucum, Muecate , Mozambique, 19­IV­2000, leg. I. Zannou (USNMNH).

REMARKS – The fixed digit of the chelicera of this new species is not typical for the genus Typhlodromalus because it has relatively few teeth, all distally located, and the inner edge is medially concave. This type of fixed digit is more typical of species in the close genus Euseius . This new species differs however from Euseius by having long peritreme and JV1 inserted on the anterior margin of the ventrianal shield.

ETYMOLOGY – The name parcidentatus refers to the few teeth on the fixed chelicera of this species.

Figures

FIGURE 1. Typhlodromalus parcidentatus Zannou, Moraes & Hanna n. sp. (female): A. Dorsal shield; B. Ventral surface; C. Chelicera; D. Spermatheca; E. Leg IV. (male): F. Ventrianal shield; G. Spermatodactyl.