Amblyseius brachyscutatus Zannou, Moraes & Oliveira, n. sp
| Main Authors: | Zannou, Ignace D., De, Gilberto J., Ueckermann, Eddie A., Oliveira, Anibal R., Yaninek, John S., Hanna, Rachid |
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| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2007
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5054941 |
Daftar Isi:
- Amblyseius brachyscutatus Zannou, Moraes & Oliveira, n. sp. (Fig. 3) DIAGNOSIS—Seta Z 1 present; setae Z 5 much longer than distance between their bases; ratios s 4:Z 1 = 26.8, s 4:S 2 = 22.3. Ventrianal shield ovoid, with 1 pair of preanal setae (Jv 1 and Zv 2 off ventrianal shield); Jv 4 absent. Movable cheliceral digit with 5–6 teeth; fixed cheliceral digit with 11–12 teeth. Genu of leg I with a macroseta. Spermatheca with calyx cup-shaped and major duct thick-walled, bifurcate at junction with atrium. Spermatodactyl L-shaped. FEMALE—(Specimens measured—Ghana: 3). Idiosomal setal pattern 10 A: 9 B/JV-3,4:ZV. Dorsum (Fig. 3 A)—Dorsal shield smooth, 333 (320–344) long and 219 (211–227) wide. Setae j 1 31 (29– 34), j 3 35 (34–37), j 4 3, j 5 3, j 6 4 (3–5), J 2 5 (5–6), J 5 4 (3–5), z 2 9 (8–10), z 4 5, z 5 4 (3–5), Z 1 5, Z 4 116 (93– 134), Z 5 238 (173–285), s 4 134 (130–139), S 2 6, S 4 6 (5–6), S 5 6 (5–6), r 3 13 (10–14), R 1 6 (5–6). Setae smooth. Peritreme—Extending beyond level of j 1. Venter (Fig. 3 B)—Sternal shield mostly smooth, with few lateral striae; posterior margin slightly convex; distances between St 1 -St 3 66 (64–67), St 2 -St 2 70 (67–70). Genital shield smooth; distance between St 5 -St 5 67. Ventrianal shield smooth, ovoid, anteriorly truncate, 115 (99–131) long, 52 (50–54) wide at level immediately anterior to Jv 2 and 70 (67–72) wide at level of anus; with 1 pair (JV 2) of preanal setae (Jv 1 and Zv 2 on soft cuticle); preanal pores elliptical, mesad and slightly posterior to Jv 2. Two pairs of metapodal shields. Seta Jv 4 absent. Chelicera (Fig. 3 C)—Movable digit 35 long, with 5 to 6 teeth; fixed digit 29 (29–30) long, with 11 to 12 teeth and a pilus dentilis. Spermatheca (Fig. 3 D)—Calyx cup-shaped 12 (11–13) long, atrium small. Legs—Sharp-tipped macrosetae: Sge I 58 (54–61), Sge II 42 (40–43), Sge III 50 (50–51), Sti III 43, Sge IV 111 (106–115), Sti IV 77 (75–78), St IV 94); presence of a prominent erect seta at base of tarsus I. MALE—(Specimens measured—Ghana: 2). Dorsum—Dorsal shield pattern as in female, 256 (235–277) long and 200 (192–208) wide. Setae j 1 26 (24– 27), j 3 32 (30–34), j 4 3, j 5 4 (3–5), j 6 4 (3–5), J 2 6 (5–6), J 5 3, z 2 7 (6–8), z 4 3, z 5 4 (3–5), Z 1 5, Z 4 114 (106– 122), Z 5 218 (203–234), s 4 101, S 2 6 (5–6), S 4 5, S 5 6, r 3 11, R 1 5. Setae smooth. Peritreme—Extending beyond level of j 1. Venter (Fig. 3 G)—Ventrianal shield subtriangular, with transverse striae anteriorly to Jv 1, 109 long, 147 wide at the anterior corners; with 4 pairs of lyrifissures (1 well anterior and slightly laterad of Jv1, 1 anterior and well lateral of Jv1, 1 anterior and well laterad to Zv 2 and 1 slightly posterior and laterad to Zv 2); preanal pores elliptical, mesad and slightly posterior to Jv 2. Spermatodactyl (Fig. 3 F)—L-shaped; shaft 18 (18–19) long. Legs—Sharp-tipped macrosetae: Sge II 33 (30–35), Sge III 41 (40–42), Sti III 36 (35–37), Sge IV 76 (75– 77), Sti IV 64 (54–74) and St IV 75 (72–78). LOCALITY AND TYPE MATERIAL—Holotype female, allotype male, 4 paratype females and paratype male from Chromolaena odorata, 3 km S New Aboi, Western Region, Ghana, 11 -XI- 1989, J.S. Yaninek, deposited at ESALQ-USP. ETYMOLOGY—The epithet brachyscutatus refers to the short ventrianal shield of the female of this species. REMARKS – This new species is distinct from all known Amblyseius species by having a single pair of preanal setae (Jv 2) on a reduced ventrianal shield. Amblyseius paucisetosus McMurtry & Moraes, 1985 resembles this new species by lacking Jv 4; however, A. paucisetosus also lacks Z 1 and Zv 3, which are present in this new species.
- Published as part of Zannou, Ignace D., De, Gilberto J., Ueckermann, Eddie A., Oliveira, Anibal R., Yaninek, John S. & Hanna, Rachid, 2007, Phytoseiid mites of the subtribe Amblyseiina (Acari: Phytoseiidae: Amblyseiini) from sub-Saharan Africa, pp. 1-47 in Zootaxa 1550 on pages 7-8, DOI: 10.5281/zenodo.178081