Amblyseius paulofariensis, Demite, Lofego & Feres, 2007

DEMITE, PETERSON R., LOFEGO, ANTONIO C. & FERES, REINALDO J. F., 2007, A new species of Amblyseius Berlese (Acari: Phytoseiidae) from Brazil, Zootaxa 1445 (1), pp. 65-68 : 65-67

Amblyseius paulofariensis sp. nov.

( Figs 1–7 )

Material Examined. Holotype female, from Acalypha diversifolia Jacq. (Euphorbiaceae) , April 14, 2003, “ Estação Ecológica de Paulo de Faria”, State of São Paulo, Brazil, 19°55’S, 49°31’W, R. Buosi coll. Paratypes: 3 females, 3 males from A. diversifolia , April 14, 2003; 4 females and 2 males from Actinostemon communis (Müll. Arg.) (Euphorbiaceae) , May 30, 2003; 2 females from Alchornea glandulosa Poepp. & Endl. (Euphorbiaceae) , June 27, 2003. All paratypes from the same locality and collector as the holotype.

Diagnosis. Females of this species differ from other species of the andersoni subgroup found in the Neotropical region (except Amblyseius similicaudalis Karg and A. sylvestris Denmark & Muma) by having setae JV2, ZV2 and ZV3 transversally aligned. It differs from A. similicaudalis and A. sylvestris by the shorter length of setae s4 and Z4, and by the shape of the spermatheca. Amblyseius paulofariensis sp. nov. most closely resembles A. igarassuensis Gondim Jr. & Moraes , mainly in the shape of the spermatheca, but differs by having setae Z5 relatively shorter, the ventri-anal shield of the female pentagonal, wider than that of A. igarassuensis , and the dorsal shield slightly striated in the anterolateral region.

Description. Female ( Figs 1–5 ) (10 specimens measured).

Dorsum ( Fig. 1 ). Dorsal shield smooth, with a few striae anterolateraly, 317: 312 (296–326) long, 196: 199 (194– 204) wide at level of s4; setae: j1 18: 19 (17–20), j3 33: 33 (30–36), j4 6: 6 (5–7), j5 6: 6 (5–6), j6 6: 7 (6–7), J2 8: 9 (8– 10), J5 6: 7 (6–9), z2 10: 11 (9–13), z4 7: 9 (7–10), z5 6: 6 (5–7), Z1 9: 9 (8–10), Z4 54: 52 (48–56), Z5 79: 81 (75–87), s4 46: 47 (41–52), S2 11: 11 (9–12), S4 12: 12 (11–13), S5 12: 12 (11–14), r3 11: 11 (10–12), R1 8: 9 (8–10). All setae smooth, except Z4 and Z5 which are serrated.

Peritreme. Extending forward to the level of j1.

Venter ( Fig. 2 ). Sternal shield smooth, with three pairs of setae and two pairs of lyrifissures; distance between st1– st3 58: 59 (57–61) and between st2–st2 67: 67 (64–71). Genital shield smooth, distance between st5–st5 68: 67 (64–69). Ventri-anal shield smooth, nearly pentagonal, with lateral margins slightly concave posterior to ZV2; with three pairs of pre-anal setae and a pair of pores posterior to JV2; 103: 104 (97–110) long, 90: 87 (84–90) wide at level of ZV2, 73: 76 (71–80) wide at level of anus. Setae ZV1, ZV3 and JV4 on integument surrounding ventri-anal shield. Setae JV5 smooth; 41: 43 (37–49) long.

Chelicera ( Fig. 3 ). Movable digit 28: 28 (27–29) with three teeth, fixed digit 24: 25 (23–26) with 8–10 teeth.

Spermatheca ( Fig. 4 ). Cervix tubular; 7: 8 (7–9) long.

Legs ( Fig. 5 ). With setaceous macrosetae of the following lengths: Sge I 29: 31 (29–33), Sge II 26: 29 (26–31), Sge III 34: 32 (29–34), Sti III 24: 24 (22–27), Sge IV 53: 53 (51–55), Sti IV 38: 40 (38–43), St IV 51: 52 (48–56). Chaetotactic formula of genu II: 2-2/0-2/0-1 and genu III: 1-2/1-2/0-1.

Male ( Figs 6 and 7 ) (5 specimens measured).

Dorsum. Dorsal shield smooth, with a few striae anterolaterally, 236 (231–240) long, 170 (166–171) wide at level of s4; setae: j1 17 (14–19), j3 26 (24–28), j4 6 (5–6), j5 5 (5), j6 6 (6–7), J2 9 (8–9), J5 6 (6–7), z2 9 (8–9), z4 9 (8–9), z5 5 (5), Z1 7 (7–8), Z4 37 (34–41), Z5 60 (56–64), s4 30 (28–32), S2 10 (9–11), S4 11 (11), S5 11 (10–11), r3 11 (11), R1 9 (8–10). All setae smooth, except Z4 and Z5 which are serrated.

Peritreme. Extending forward to the level of j1.

Venter ( Fig. 6 ). Sternogenital shield smooth; ventri-anal shield subtriangular, mostly smooth, striated from anterior extremity to level of JV1; 99 (95–103) long and 131 (125–136) wide at anterior corners, with three pairs of pre-anal setae, one distinct pair of pores posterior and mediad to bases of JV2, and four other smaller pairs of lyrifissures.

Spermadactyl ( Fig. 7 ). Shaft 15 (14–16) long.

Legs. With setaceous macrosetae of the following lengths: Sge I 24 (23–26), Sge II 24 (22–25), Sge III 24 (21–25), Sti III 20 (18–21), Sge IV 34 (31–36), Sti IV 28 (26–32), St IV 45 (41–47). Chaetotactic formula of genu II and genu III as in females.

Etymology. The specific name refers to the type locality “Estação Ecológica de Paulo de Faria”, a protected natural area in the northwest of São Paulo State, Brazil.

Remarks. Amblyseius paulofariensis sp. nov. was the most abundant species of Phytoseiidae on A. diversifolia and A. communis , representing 35% and 44% of all the Phytoseiidae collected on those hosts respectively (Feres et al., unpublished data). Since this is such an abundant species, studies should be conducted to evaluate its predatory potential for control of pest mites of agriculture. The "Estação Ecológica de Paulo de Faria" is an area of great ecological importance, being the largest protected natural area of the northwest of State of São Paulo, considering that this region possesses only 3% of the original natural vegetation.

Acknowledgements. We thank Dr. Gilberto J. de Moraes and Dr. Carlos H. W. Flechtmann ( Depto. de Entomologia , Fitopatologia e Zoologia Agrícola, ESALQ / USP, Piracicaba, São Paulo State, Brazil) for loan of the paratypes of A. igarassuensis and for sending important publications, respectively. This work was supported by the State of São Paulo Research Foundation (FAPESP) within the BIOTA /FAPESP—The Biodiversity Virtual Institute Program (www.biota.org.br) .

PETERSON R. DEMITE 1,4, ANTONIO C. LOFEGO 2 & REINALDO J. F. FERES 3

1 Programa de Pós-graduação em Biologia Animal, UNESP-Universidade Estadual Paulista, São José do Rio Preto, São Paulo, Brazil 2 UNORP- Centro Universitário do Norte Paulista, Rua Ipiranga 3460, 15020-040, São José do Rio Preto, São Paulo, Brazil 3 Departamento de Zoologia e Botânica, UNESP-Universidade Estadual Paulista, Rua Cristóvão Colombo, 2265, Jardim Nazareth, 15054-000, São José do Rio Preto, São Paulo, Brazil 4 Corresponding author. E-mail: [e-mail]

Figures

FIGURES 1–7. Amblyseius paulofariensis sp. nov. 1–5. Female. 1. Dorsal shield, 2. Ventral idiosoma, 3. Chelicera, 4. Spermatheca, 5. Leg IV (genu, tibia and basitarsus). 6–7. Male. 6, Ventri-anal shield, 7. Chelicera.