Amblyseius biotafapesp, Demite, Peterson R., Lofego, Antonio C. & Feres, Reinaldo J. F., 2011

Demite, Peterson R., Lofego, Antonio C. & Feres, Reinaldo J. F., 2011, Phytoseiidae (Acari) in forest fragments in the State of São Paulo, Brazil, Zootaxa 3086, pp. 31-56 : 34-36

Amblyseius biotafapesp sp. nov.

Description. Female ( Figs 1–7 ) (10 specimens measured).

Dorsum ( Fig. 1 ). Dorsal shield smooth; with 16 pairs of lyrifissures and seven pairs of pores; 350: 327 (315– 350) long, 225: 210 (202–225) wide at level of s 4; setae: j 1 24: 22 (19–24), j 3 37: 35 (33–37), j 4 6: 6 (6–7), j 5 6: 6 (5–6), j 6 7: 7 (6–7), J 2 8: 8 (7–9), J 5 8: 8 (7–8), z 2 13: 13 (12–15), z 4 9: 8 (8–9), z 5 6: 6 (5–6), Z 1 9: 9 (8–10), Z 4 60: 57 (54–60), Z 5 140: 124 (104–140), s 4 47: 46 (42–49), S 2 10: 10 (9–11), S 4 10: 10 (8–12), S 5 9: 8 (7–9), r 3 10: 11 (10–13), R 1 9: 9 (8–10). All setae smooth, except Z 4 and Z 5 which are serrated. Peritreme extending forward to the level of j 1.

Venter ( Fig. 2 ). Sternal shield smooth, with three pairs of setae and two pairs of lyrifissures; distance between st 1 -st 3 62: 61 (58–63) and between st 2 -st 2 70: 67 (59–70). Genital shield smooth, distance between st 5 -st 5 70: 67 (62–73). Ventri-anal shield smooth, nearly pentagonal, with lateral margins slightly concave posterior to ZV 2; with three pairs of pre-anal setae and a pair of pores posterior to JV 2; 118: 108 (102–118) long, 92: 84 (78–92) wide at level of ZV 2, 84: 78 (74–84) wide at level of anus. Setae ZV 1, ZV 3 and JV 4 on integument surrounding ventrianal shield. Setae JV 5 smooth; 50: 51 (45–58) long.

Chelicera ( Fig. 3 ). Movable digit 29: 28 (26–30) with three teeth, fixed digit 28: 29 (27–30) with 9–11 teeth.

Spermatheca ( Fig. 4 ). Cervix bell-shaped; 12: 13 (11–14) long. Atrium poorly developed.

Legs ( Fig. 5 ). Macrosetae smooth and pointed, lengths: Sge I 31: 31 (29–32), Sge II 32: 31 (30–32), Sge III 40: 38 (34–40), Sti III 31: 28 (25–31), Sge IV 70: 64 (59–70), Sti IV 52: 49 (45–52), St IV 61: 63 (60–69). Chaetotactic formula of genu II: 2 - 2 / 0-2 / 0-1, genu III: 1-2 / 1-2 / 0-1.

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

Dorsum. Dorsal shield smooth, with a few striae anterolaterally, 252 (240–260) long, 169 (165–172) wide at level of s 4; setae: j 1 20 (19–21), j 3 30 (29–30), j 4 6, j 5 6, j 6 6, J 2 7 (6–8), J 5 6 (5–6), z 2 10 (9–10), z 4 8, z 5 5 (5– 6), Z 1 8 (7–9), Z 4 44 (43–45), Z 5 98 (95–100), s 4 37 (35–39), S 2 8 (7–10), S 4 7 (6–8), S 5 6, r 3 9 (8–10), R 1 9. All setae smooth, except Z 4 and Z 5 which are serrated. Peritreme extending forward to the level of j 1.

Venter ( Fig. 6 ). Sternogenital shield smooth; ventri-anal shield subtriangular, mostly smooth, striated from anterior extremity to level of JV 1; 112 (110–113) long and 135 (130–140) wide at anterior corners, with three pairs of pre-anal setae, one distinct pair of pores posterior and mediad to bases of JV 2, and four other smaller pairs of lyrifissures.

Spermadactyl ( Fig. 7 ). Shaft 18 (17–19) long.

Legs. Macrosetae smooth and pointed, lengths: Sge I 27 (26–28), Sge II 25 (24–26), Sge III 25 (25–26), Sti III 20 (19–21), Sge IV 44 (42–45), Sti IV 33 (31–34), St IV 58 (55–60). Chaetotactic formula of genu II and genu III as in females.

Type material. Holotype female, Turmalina, on Actinostemon communis (Müll. Arg.) Pax. ( Euphorbiaceae ), January 2008, P.R. Demite & A.C. Lofego coll. Paratypes: one female, July 2007, same locality and host as holotype; one female, on Clavija sp. (Theofrastaceae), July 2007, same locality as holotype; one female and one male, Votuporanga, on Terminalia cf. brasiliensis ( Combretaceae ), March 2008; two females, Palestina, Area 2, April 2008, same host as holotype; two females, April 2008, same locality and host as holotype; two females and two males, July 2008, same locality and host as holotype. All paratypes same collectors as holotype.

Other specimens examined: Palestina – Area 2: A. communis , IV- 2008 (4), IV- 2009 (2); S. J. de Iracema: T. impetiginosa , III- 2008 (6); Turmalina: A. communis , VII- 2007 (8), I- 2008 (3), IV- 2008 (11), VII- 2008 (60), I- 2009 (5), IV- 2009 (4), Astronium sp. ( Anacardiaceae ), VI- 2008 (5), T. casaretti , VII- 2007 (4), IV- 2008 (1), VII- 2008 (10), IV- 2009 (2); Votuporanga: Myrtaceae sp. 2, VI- 2007 (1), III- 2008 (1); Terminalia cf. brasiliensis ( Combretaceae ), III- 2008 (1).

Etymology. This species is named in reference to the Biota/FAPESP Program. The main aim of this program is to survey and characterize the biodiversity of the State of São Paulo, Brazil.

Remarks. This new species belongs to the obtusus species group, characterized by Chant & McMurtry (2004 a) by having setae z 2, z 4, Z 1, S 2, S 4 and S 5 short/minute, approximately subequal; setae s 4, Z 4 and Z 5 are prominent, usually but not always very elongate, sometimes whip-like, and by having the ventrianal shield of female pentagonal in shape, widest at the level of setae ZV 2. Within the obtusus species group, A. biotafapesp sp. nov. belongs to the andersoni species subgroup, by having the spermatheca with calyx bell-shaped with the length/ width ratio at the mid-point of the calyx <3: 1. Only three species of the andersoni subspecies group have setae Z 4 <60 µm and Z 5 100–150 µm: Amblyseius bellatulus Tseng, 1983 , A. impeltatus Denmark & Muma, 1973 and A. tsugawai Ehara, 1959 . Amblyseius biotafapesp sp. nov. differs from A. bellatulus by having St IV 1.26 times as long and dorsal shield fully smooth; from A. impeltatus by having Z 4 1.30 times as long, and from A. tsugawai by having St IV 0.78 times as long. In addtion this new species differs these three species by having the pair of pores in the ventri-anal shield of females posterior to JV 2. Amblyseius biotafapesp sp. nov. also resembles A. bahiensis Lofego, Moraes & McMurtry, 2000 , A. igarassuensis Gondim Jr. & Moraes, 2001 and A. paulofariensis Demite, Lofego & Feres, 2007 . It differs from A. bahiensis by the localization of pair of pores in the ventri-anal shield of females and males (posterior to JV 2), not having striae in the ventri-anal shield of females and macrosetae Sge IV and Sti IV about 1.4 times as long; differs from females of A. igarassuensis by ratios z 2 /z 4 and s 4 /Z 4, 1.62 and 0.8, respectively, and by spermatheca bell-shaped and of relatively smaller size; and differs from females of A. paulofariensis by having Z 5 and spermatheca about 1.5 times as long.

Figures

FIGURES 1 – 7. Amblyseius biotafapesp sp. nov. 1 – 5. Female. 1. Female, dorsal shield, 2. Female, ventral idiosoma, 3. Female, chelicera, 4. Female, spermatheca, 5. Female, leg IV, genu, tibia and tarsus. 6. Male, ventri-anal shield, 7. Male, spermadactyl.