Amblyseius myrtilli Papadoulis, Emmanouel and Kapaxidi, 2009

Khaustov, Vladimir A., 2020, Review of Amblyseius Berlese (Acari: Phytoseiidae) in Western Siberia, Russia, Acarologia 60 (4), pp. 769-805 : 795-798

publication ID

https://doi.org/ 10.24349/acarologia/20204401

persistent identifier

https://treatment.plazi.org/id/62492C7E-F81B-FFDA-FE3D-FCEFFD307ACA

treatment provided by

Marcus

scientific name

Amblyseius myrtilli Papadoulis, Emmanouel and Kapaxidi
status

 

Amblyseius myrtilli Papadoulis, Emmanouel and Kapaxidi View in CoL

Amblyseius myrtilli Papadoulis, Emmanouel & Kapaxidi, 2009: 57 View in CoL , Fig. 33.

World distribution — Greece ( Demite et al. 2020).

Material examined — six females, Russia, Tyumen Province, forest park Zatyumensky , 57°09 ′ N, 65°27 ′ E, 26 April 2019, A, Khaustov coll., from soil GoogleMaps ; 2 females, Russia, Kurgan Province, vicinity of Zverinogolovskoe , 54°27 ′ N, 64°51 ′ E, 28 September 2019, A, Khaustov coll., from soil GoogleMaps ; 2 females, Russia, Tyumen Province, vicinity of lake Kuchak , 57°21 ′ N, 66°03 ′ E, 27 April 2018, A, Khaustov coll., from soil GoogleMaps .

Redescription — Female ( Figs. 21 View Figure 21 , 22 View Figure 22 , 23 View Figure 23 , 24 View Figure 24 , 25 View Figure 25 , 27D View Figure 27 ) (n = 4)

Idiosomal setal pattern – 10A:9B/JV–3:ZV.

Dorsal idiosoma ( Figs. 21A View Figure 21 , 25A View Figure 25 ) – Dorsal shield broadly oval, smooth, 362 (360-363) long and 262 (246-279) wide; with 19 pairs of setae (included r3 and R1), all setae smooth; length of setae: j1 24 (22-25), j3 43 (41-46), j4 6 (6), j5 6 (5-6), j6 6 (5-6), J2 7 (6-7), J5 11 (10-12), z2 13 (11-14), z4 9 (8-10), z5 6 (6), Z1 7 (6-7), Z4 89 (86-92), Z5 164 (156-173), s4 Characters Russia, Georgia Lithuania Characters Russia, Georgia Lithuania

Tyumen district (4) (1) (?) Tyumen district (4) (1) (?)

Dsl 353 (340-371) 515 348 z2 15 (15-16) 16 14

Dsw 232 (229-236) 294 219 z4 15 (13-16) 17 13

j1 26 (25-27) 22 25 z5 5 (5-6) - 6

j3 42 (40-44) 41 41 Z1 6 (5-6) 12 -

j4 6 (5-6) 7 6 Z4 91 (90-92) 95 89

j5 5 (5-6) 7 6 Z5 140 (132-147) 129 139

j6 5 (5-6) 7 5 Vsl 115 (113-117) - 114

J2 5 (5-6) 7 6 Vsw ZV2 93 (91-94) - 89

J5 9 (8-10) 6 9 JV5 66 (63-70) - 67

r3 18 (17-18) - 11 SgeIV 75 (74-80) - 67

R1 14 (13-14) - 10 StiIV 62 (60-64) - 58

s4 63 (62-67) 65 65 StIV 59 (58-59) - 56

S2 9 (8-10) - 8 Nbf 15-16 - 16

S4 8 (7-9) 9 8 Nbm 3 - 3

S5 8 (7-8) 9 -

60 (57-62), S2 11 (10-12), S4 10 (9-10), S5 11 (10-11); setae r3 15 (14-15) and R1 10 (9-11)

on lateral soft cuticle; dorsal shield with seven pairs of solenostomes gd (1, gd2, gd4, gd5, gd6, gd8, gd9) and 16 pairs of poroids.

Gnathosoma ( Figs. 22B, 22C, 22D, 22E View Figure 22 ) – Anterior margin of epistome bump-like and smooth. Hypostomal groove with seven transverse rows of denticles, each row with two or three teeth; subcapitular setae h1 25 (24-26), h2 24 (23-24), h3 24 (23-24), palp coxal setae (pc) 28 (27-28). Chaetotaxy of palps: trochanter with two setae v1, v2; femur with five setae, thickened and apically spatulate antero-lateral al, three dorsal (d1, d2, d3) and one postero-lateral (pl); genu with six setae, antero-lateral setae (al1 and al2) thickened, three dorsal setae d (1, d2, d3) and one postero-lateral (pl); tibia with 14 setae, one antero-lateral (al), eight dorsal d1 – 8, two setae di-1, di-2, arise from the dorsal surface at the distal end, two ventral v (1, v2) and one postero-lateral (pl); tarsus with 15 setae (six simple d1, d2, d3, v1, v2, v3; nine stout setae with rounded tips di-1 to di- 9) and two-tined apotele ( Fig. 22C View Figure 22 ).

Chelicera ( Figs. 22A View Figure 22 , 25C View Figure 25 ) – fixed digit 28 (27-30) long, with 3-4 teeth and pilus dentilis; movable digit 28 long, with two small teeth.

Ventral idiosoma ( Figs. 21B View Figure 21 , 25B View Figure 25 ) – Tritosternum with paired pilose laciniae 78, fused basally 25, columnar base 15-16 × 12 wide. Sternal shield smooth, 62 (59-63) long and 66 (63-67) wide, with three pairs of setae ST1 31, ST2 25 (24-25), ST3 26 (25-28) and two pairs of lyrifissures iv1, iv2. Setae ST4 23 (22-25) situated on small separate metasternal platelets, each with one pore iv3.

Genital shield smooth, 67 (66-71) wide at level of base of setae ST5 31 (29-32), para-genital poroids iv5 on soft cuticle.

Opisthosomatic venter with two pairs of elongated metapodal platelets, primary 24 (22-26) and accessory 18 (17-19) long; four pairs of setae, ZV1 16 (16-17), ZV3 8, JV4 12 (12-13), JV5

68 (67-68) long, all smooth, and five pairs of poroids.

Ventrianal shield pentagonal in shape, noticeably wider than genital shield, with reticulation in anterior part, 120 (116-123) long and 111 (106-116) wide at level of setae ZV2, with three pairs of pre-anal setae JV1 17 (16-18), ZV2 18 (16-19), JV2 24 (23-25), with small rounded preanal pores gv3 (distance between pores 46 (44-48)); para-anal setae 20 (19-21) and post-anal setae 20 (20-21).

Peritreme ( Figs. 21A View Figure 21 , 22F View Figure 22 , 25A View Figure 25 ) – extends anteriorly to setae j1.

Spermatheca ( Figs. 22G View Figure 22 , 25D View Figure 25 ) – Calyx sacculus-like, 25 (23-26) long and at the opening

15 (12-16) wide; atrium C-shaped, connected without neck with calyx; major duct thick, minor duct visible in some specimens.

Legs ( Figs. 23 View Figure 23 , 24 View Figure 24 ) – Legs I 351 (349-353) and IV 327 (318-336) longer than legs II 270

(264-279) and III 257 (248-264). Chaetotaxy normal for phytoseiid mites: Leg I: coxa 0 0/1

0/1 0, trochanter 1 0/1 0/2 1, femur 2 3/1 2/2 2, genu 2 2/1 2/1 2, tibia 2 2/1 2/1 2. Leg II: coxa

0 0/1 0/1 0, trochanter 1 0/1 0/2 1, femur 2 3/1 2/1 1, genu 2 2/0 2/0 1, tibia 1 2/1 1/1 1. Leg

III: coxa 0 0/1 0/1 0, trochanter 1 0/1 0/2 1, femur 1 2/1 1/0 1, genu 1 2/1 2/0 1, tibia 1 1/1 2/1 1. Leg IV: coxa 0 0/1 0/0 0, trochanter 1 0/1 0/2 1, femur 1 2/1 1/0 1, genu 1 2/1 2/0 1, tibia 1

1/1 2/0 1.

Chaetotaxy of tarsi II-IV typical for Phytoseiidae and bears 18 setae 3 3/2 3/2 3 + mv, md.

Tarsus I with 37 setae, excluding apical sensorial setal cluster. Setae d3 22-24 with rounded tip, d4 30. Apical sensorial setal cluster (27D) includes 10 short setae of different shape.

Setae df-1 (12), df-3 (7-8) and df-7 (8-9) finger-shaped with blunt tips. Setae df-2 (7), df-5 (6),

df-6 (16) and df-8 (9-10) baculiform with rounded tips, setae df-8 usually curved. Setae df-4

(12-14), df-9 (9) spur-like with lobe-like tips, setae df-10 (6) situated between df-4 and df-9

also spur-like with acuminate tip. Measurements of macrosetae as follows: SgeII 31 (30-32),

SgeIII 32 (31-33), StiIII 25 (24-27), SgeIV 75 (72-80), StiIV 60 (59-60), StIV 55 (52-58). All macrosetae are acuminate.

Remarks — Amblyseius myrtilli is known only from Greece, on leaves of Vaccinium myrtillis (Ericaceae) and from litter under Juniperus sp. Morphological characteristics of

Siberian specimens are consistent with those provided in the original description ( Papadoulis et al., 2009). It is the second record of A. myrtilli in the world and the first report in Russia. The record of A. myrtilli in Russia is not accidental, since in Greece it was found in the mountains at an altitude of 1800 m. At this altitude, the climate is moderate and more or less similar to the southwestern Siberia.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Mesostigmata

Family

Phytoseiidae

Genus

Amblyseius

Loc

Amblyseius myrtilli Papadoulis, Emmanouel and Kapaxidi

Khaustov, Vladimir A. 2020
2020
Loc

Amblyseius myrtilli

Papadoulis G. Th. & Emmanouel N. G. & Kapaxidi E. V. 2009: 57
2009
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