Amblyseius herbicolus
Creators: name: Faraji, Farid
name: Hoekstra, Paul H.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Amblyseius
Amblyseius herbicolus

description: Amblyseius herbicolus (Chant, 1959)
For other names and synonyms see Demite et al. (2021)
(Fig. 3: A–E)
Female– One specimen measured.
Idiosomal setal pattern: 10A:9B/JV–3:ZV.
Dorsal idiosoma (Fig. 3A) – Dorsal shield oval, slightly constricted at R 1 level, 425 long and 288 wide at j6 level, smooth with some striae anterolaterally; with 19 pairs of dorsal setae (r 3 and R 1 included); dorsal shield setae smooth, except for Z 4 and Z 5, slightly serrated; lengths: j 1 38, j 3 46, j 4 8, j 5 6–7, j 6 8, J 2 9, J 5 9, z 2 14, z 4 15, z 5 8, Z 1 13, Z 4 115, Z 5 263, s 4 101, S 2 11, S 4 11, S5 8; setae r 3 14 and R 1 10 on lateral integument; Z 4, Z 5 and s 4 are the longest, dorsal shield with 7 pairs of solenostomes (gd 1, gd 2, gd 4, gd 5, gd 6, gd 8, gd 9) and 11 pairs small poroids.
Peritreme – Extending almost beyond setae j 1 (Fig. 3A).
Ventral idiosoma (Fig. 3B) – Sternal shield slightly wider than long, posterior margin straight, smooth at the central area with a few lateral striae, 79 long, 87 wide at level of setae ST 2, three pairs of setae and two pairs of pores (iv 1 and iv 2), ST 1 41, ST 2 35, ST 3 33;distances between ST 1 –ST 3 76 and ST 1 –ST 1 71, ST 2 –ST 2 79; metasternal setae ST 4 33 and a pair of pores (iv 3) on small platelets; genital shield smooth width at widest point 82, ST 5 33; two pairs of metapodal shields, primary 26 long and accessory 17 long; ventrianal shield smooth vase-shaped (Fig. 3B), length 133, width at level of setae ZV 2, 68, and width at level of paranal setae 74; with three pairs of preanal setae (JV 1 27, JV 2 25, ZV 2 21); four pairs of setae surrounding ventrianal shield on integument (JV 4 11, JV 5 71, ZV 1 20, ZV 3 11), five pairs of pores surrounding ventrianal shield. Ventrianal shield with a pair of elliptical pores (gv 3) posteromesad to JV 2, distance between these pores 32.
Spermatheca – Calyx elongate 35 long, 4 in diameter at the middle part of the calyx; one-third of calyx wall toward vesicle much thinner than the rest; atrium relatively large and C-shaped (Fig. 3D).
Chelicera – Fixed digit 30 long with about 10 teeth and a pilus dentilis; movable digit 33 long with 4 teeth (Fig. 3C).
Legs – Leg IV (Fig. 3E) with three pointed macrosetae, SgeIV 111, StiIV 87, StIV 70; length of macrosetae on other legs: SgeI 44, SgeII 40, SgeIII 47; length of legs from the base of coxae to the tip of claws: leg I 311, leg II 233, leg III 256, leg IV 321; chaetotactic formulae of genua and tibiae I–II–III–IV with 10(2-2/1, 2/1-2) – 7(2- 2/0, 2/0-1) – 7(1-2/1, 2/0-1) – 7(1-2/0, 2/1-1) and 10(2- 2/1, 2/1-2) – 7(1-2/1, 1/1-1) – 7(1-1/1, 2/1-1) – 6(1-1/0, 2/1-1) setae respectively.
Distribution – Many tropical and subtropical countries (see Demite et al., 2021).
Specimen examined – One female, 12 November 2015, Phoenix sp., in greenhouse, Hortus Botanicus Amsterdam, The Netherlands (52°22’00.4”N 4°54’25.8”E), collector: Farid Faraji.
Remarks – It seems that Amblyseius herbicolus has a well-established population in the greenhouse of Hortus Botanicus Amsterdam for generations. The features of the specimen found in The Netherlands fits well with the re-descriptions of this species. The spermatheca figures by Denmark & Muma (1989) and Zannou et al. (2007) show a uniform calyx wall while ours shows the part of calyx towards atrium thicker. The photograph by Ferragut et al. (2010) indicates that feature very well.
description: Published as part of Faraji, Farid & Hoekstra, Paul H., 2021, Some new species records of the predatory mite family Phytoseiidae (Acari: Mesostigmata) from The Netherlands, pp. 35-57 in Soil Organisms 93 (1) on page 39, DOI: 10.25674/so93iss1pp35, http://zenodo.org/record/10724129