Amblyseius ica, Lofego & Demite & Feres, 2011

Lofego, Antonio C., Demite, Peterson R. & Feres, Reinaldo J. F., 2011, Two new species of phytoseiid mites (Acari: Phytoseiidae) from the State of São Paulo, Brazil, Journal of Natural History 45 (37 - 38), pp. 2347-2354: 2348-2350

publication ID

http://doi.org/ 10.1080/00222933.2011.596950

persistent identifier

http://treatment.plazi.org/id/03DC87C4-FFA2-A92E-0BE2-FED0CEB3FAEB

treatment provided by

Carolina

scientific name

Amblyseius ica
status

sp. nov.

Amblyseius ica   sp. nov.

( Figure 1 View Figure 1 )

Diagnosis

This new species belongs to the americanus species group ( Chant and McMurtry 2004), characterized as having the z4 longer than z2, at least 2 / 3 as long as the distance between its base and that of s4. Amblyseius ica   sp. nov. also belongs to the dombeyus   species subgroup, since it has an elongate and tubular calyx. This subgroup was previously represented by a single species, Amblyseius dombeyus   ( Denmark and Evans, 1999). The new species differs from A. dombeyus   by having setae j3 and z4 shorter (0.5), and pre-anal pores placed posterior and longitudinally aligned with the base of setae JV2, whereas in A. dombeyus   they are mesad and transversely aligned with the bases of setae JV2.

Specimens examined

Holotype female, from Rubus   sp. ( Rosaceae   ) leaves, 24 July 2008, Serra do Japí, Jundiaí, State of São Paulo, Brazil, 23 ◦ 11 ′ S, 46 ◦ 52 ′ W, P.R. Demite and J.C. de Souza colls. Paratypes: six females and one male, from same host, date and collectors as the holotype; two females and one male, 24 June 2009, from same host and collectors as the holotype; nine females from Melinis minutiflora Beauv.   ( Poaceae   ) leaves, 16 June 2009, A.C. Lofego coll. All paratypes from same locality as the holotype.

Description of female (nine specimens measured)

Dorsum ( Figure 1A View Figure 1 ). Dorsal shield smooth, with a few striae anterolaterally; with 12 pairs of lyrifissures and 7 pairs of pores; 325 312 (300–325) long and 182 182 (175–192) wide at s4 level; j1 20 21 (20–24), j3 28 27 (25–30), j4 6 6 (6–7), j5 5 5 (5–6), j6 6 6 (6–7), J2 7 7 (6–7), J5 5 6 (5–6), z2 15 16 (15–19), z4 25 25 (23–27), z5 5 5, Z1 6 7 (6–8), Z4 55 55 (50–57), Z5 70 69 (60–73), s4 47 48 (45–55), S2 13 13 (12–16), S4 10 10 (10–11), S5 9 9 (8–10), r3 22 22 (20–26), R1 9 8 (8–9). All setae smooth, except Z4 and Z5 which are serrated   .

Venter ( Figure 1B View Figure 1 ). Sternal and genital shields smooth, distance between setae st1–st3 61 62 (60–65), st2–st2 63 64 (62–68), st5–st5 56 54 (51–56). Ventrianal shield smooth, 110 106 (103–112) long, 75 74 (70–80) wide at level ZV2 and 65 67 (65–73) wide at the anus level; JV5 48 50 (45–54).

Peritreme. Extending to the level of j1. Chelicera ( Figure 1C View Figure 1 ). Movable cheliceral digit 26 25 (24–26) long, with 3 teeth. Fixed cheliceral digit 26 26 (25–28) long, with 11 teeth.

Spermatheca ( Figure 1D View Figure 1 ). Calyx elongate and tubular, 20 21 (17–23) long. Atrium nodular.

Legs ( Figure 1E View Figure 1 ). All legs with macrosetae: SgeI 30 28 (28–30), SgeII 25 25 (24–27), SgeIII 23 22 (21–23), SgeIV 42 42 (41–44), StiIV 33 34 (30–35), StIV 63 64 (60–67). All macrosetae smooth and pointed. Chaetotaxy: genu II 2–2 / 0–2 / 0–1; genu III 1–2 / 1– 2 / 0–1.

Description of male (two specimens measured)

Dorsum. Dorsal shield smooth, with few striae anterolaterally, 235–245 long and 160– 172 wide; j1 19–20, j3 33–34, j4 5–6, j5 5, j6 5–6, J2 5, J5 4–5, z2 16–17, z4 26–27, z5 4–5, Z1 6, Z4 42–43, Z5 55–56, s4 42 –49, S2 12, S4 10 –11, S5 7 – 8, r3 20–21, R1 7. All setae smooth, except Z4 and Z5, which are serrated   .

Venter ( Figure 1F View Figure 1 ). Sternogenital shield smooth. Ventrianal shield with striae in the anterior half, and seems to be fused to the peritremal shield by a strip arising from the anterior margin near corners, but not well-defined in the specimens available; 103–110 long and 125–137 wide at the anterior corners level; with four pairs of pre-anal setae, one distinct pair of pores posterior to JV2 and three pairs of lyrifissures; JV5 28–30.

Peritreme. Extending to the level of j1.

Spermatodactyl ( Figure 1G View Figure 1 ). T-shaped, shaft 12–15.

Legs. All legs with macrosetae: SgeI 25–26, SgeII 20–21, SgeIII 19–20, SgeIV 30–33, StiIV 27–31, StIV 57–60. All macrosetae smooth and pointed. Chaetotaxy: genu II 2-2 / 0-2 / 0-1; genu III 1-2 / 1-2 / 0-1.

Etymology

The specific name ica   is the acronym of the “International Congress of Acarology”, in allusion to the XIII ICA, held in Brazil in August 2010   .