Typhlodromips extrasetus, G. J. De Moraes, A. R. Oliveira & I. D. Zannou, 2001

G. J. De Moraes, A. R. Oliveira & I. D. Zannou, 2001, New phytoseiid mites (Acari: Phytoseiidae) from tropical Africa, Zootaxa 8, pp. 1-10 : 4-6

Typhlodromips extrasetus n. sp. ( Fig. 3)

DIAGNOSIS – This species is similar to Typhlodromips culmulus (Van der Merwe, 1968) and Typhlodromips shi (Pritchard & Baker, 1962) from central Africa, Typhlodromips quaesitus (Wainstein & Beglyarov, 1971) and Typhlodromips syzygii (Gupta, 1975) from Asia, and Typhlodromips mangleae DeLeon, 1967 and Typhlodromips pederosus (El­ Benhawy, 1978) from South America. However, it differs from those species by having seta J 1. The new species is also similar to Typhlodromips tanzaniensis Yoshida­Shaul & Chant, 1988 , which also has seta J 1, but differs from it by having R 1 distinctly off dorsal shield, J 2 closer together, shorter Z 4, well sclerotized sternal shield and ventrianal shield ca. as wide at level of ZV 2 as at level of anus.

FEMALE – ( 3 specimens measured)

Dorsum – Dorsal shield reticulate, 316 ( 304­328) long and 212 ( 200­213) wide at widest level of the proscutum. Setae j 1 16 ( 13­18), j 3 18 ( 14­21), j 4 12 ( 8­16), j 5 13 ( 8­ 16), j 6 14 ( 11­16), J 1 14 ( 11­16), J 2 14 ( 13­16), J 5 9 ( 8­10), z 2 13 ( 11­14), z 4 14 ( 8­16), z 5 12 ( 10­14), Z 1 15 ( 10­19), Z 4 26 ( 22­26), Z 5 59 ( 58­61), s 4 17 ( 14­19), S 2 13 ( 10­16), S 4 10 ( 8­10), S 5 10 ( 8­11), r 3 13 ( 10­16), R 1 10 ( 8­10). All setae smooth, except Z 4 and Z 5 which are serrate. Holotype with r 3 on edge of dorsal shield on one side; paratypes with r 3 off dorsal shield. Setae J 1 ca. as close together as setae j 6.

Peritreme – Extending forward to level between insertions of j 1 and j 3.

Venter – All shields distinct and smooth. Sternal shield with 3 pairs of setae and 2 pairs of lyrifissures. Distances between ST 1 ­ST 3 53 ( 50­56), ST 2 ­ST 2 60 ( 58­61), ST 5 ­ ST 5 58 ( 56­59). With 2 pairs of metapoldal shields. Ventrianal shield vase­shaped, 100 ( 88­101) long, 78 ( 69­86) wide at level of ZV 2 and 78 ( 72­85) wide at level of anus, with 3 pairs of preanal setae and a pair of large ellipsoidal pores slightly posteromesad to JV 2.

Chelicera – Movable digit 27 long, with 3 teeth; fixed digit 24 long, with 8 teeth.

Spermatheca – Calyx plate­shaped, widest diameter ca. 12; atrium distinct.

Legs – With a small knob at the tip of each leg macroseta: Sge I 20 ( 19­21), Sge II 18 ( 18­19), Sge III 25 ( 24­28), Sti III 17 ( 16­18), Sge IV 34 ( 32­37), Sti IV 22 ( 19­24) and St IV 40. Chaetotaxy of genu II 2 ­( 2,2)/ 0­1; genu III 1 ­( 2,2)/ 1 ­ 1.

MALE – ( 1 specimens measured).

Dorsum – Dorsal shield reticulate, 278 long, 188 wide at the widest level of proscutum. Setae j 1 15, j 3 20, j 4 13, j 5 13, j 6 13, J 1 10, J 2 15, J 5 8, z 2 13, z 4 14, z 5 10, Z 1 13, Z 4 23, Z 5 43, s 4 15, S 2 13, S 4 10, S 5 9, r 3 15, R 1 10. All setae smooth, except Z 4 and Z 5 which are serrate.

Peritreme – Extending forward to level of insertion of j 1.

Spermatodactyl ­ Shaft 17 long.

Venter – Ventrianal shield sub­triangular, 113 long and 145 wide at the anterior corners, with few transversal striae anteriorly, 3 pairs of preanal setae, 4 pairs of small pores, one by anterior margin and 3 anterolateral, and a pair of large pores slightly posteromesad to JV 2.

Legs – With a small knob at the tip of each leg macroseta: Sge I 15, Sge II 13, Sge III 18, Sti III 15, Sge IV 25, Sti IV 20 and St IV 40. Chaetotaxy of genua of legs II and III as in female.

TYPE MATERIAL – Holotype female and 1 allotype male from Morinda lucida, Takon , Benin, 29 ­V­ 1991, coll. A. Onzo; 2 paratype females, Kenya, 29 ­XI­ 1989, coll. J.S. Yaninek.

ETYMOLOGY – The epithet extrasetus refers to the presence of J 1 on the dorsal shield of this new species, a seta rarely found in phytoseiid mites.