Amblyseius krantzi (Chant)

Khaustov, Vladimir A., 2020, Review of Amblyseius Berlese (Acari: Phytoseiidae) in Western Siberia, Russia, Acarologia 60 (4), pp. 769-805 : 786-787

Amblyseius krantzi (Chant)

Typhlodromus (Amblyseius) krantzi Chant, 1959: 83 .

Amblyseius (Amblyseius) krantzi: Muma 1961: 287 .

Typhlodromus krantzi: Hirschmann 1962: 23 Fig 232.

Amblyseius krantzi: Wainstein 1975: 920 .

Typhlodromips krantzi: Moraes et al. 1986: 142

Typhlodromips krantzi: Moraes et al. 2004: 215 .

World distribution — Alaska, Canada, Kazakhstan, Poland, Russia, USA ( Demite et al. 2020).

Material examined — 12 females, Russia, Tyumen province, Uspenka state zoological reserve, 57°04 ′ N, 65°04 ′ E, 07 August 2018 and 28 June 2019, V.A. Khaustov coll., on leaves of Urtica dioica L. ( Urticaceae ) and Geranium sylvaticum L. ( Geraniaceae ); 32 females and 2 males, Russia, Tyumen province, vicinity of Tyunevo, 57°22 ′ N, 65°41 ′ E, 12 October 2017,

25 September 2018, V.A. Khaustov coll., on leaves of Geum rivale L. ( Rosaceae ), Aegopodium podagraria L. ( Apiaceae ) and Filipendula ulmaria (L.) Maxim., ( Rosaceae ); 1 female, Russia, Tyumen province, vicinity of lake Kuchak, 57°21 ′ N, 66°03 ′ E, 31 July 2018, V.A. Khaustov coll., on leaves of Rubus saxatilis L. ( Rosaceae ).

Supplementary description — Female Tarsus I bears 37 setae, excluding apical sensorial setal cluster. Setae d3 13-15 with rounded tip, d4 25. Apical sensorial setal cluster ( Fig.

26C) includes 10 short setae of different shape. Setae df-1 (13), df-2 (4), df-3 (9) and df-7 (8) finger-shaped with blunt tips. Setae df-5 (8-9), df-6 (12-13) and df-8 (11) baculiform with rounded tips, setae df-8 usually curved. Setae df-4 (10-11), df-9 (10) spur-like with lobe-like tips, setae df-10 (5-6) located between df-4 and df-9 also spur-like with acuminate tip.

Remarks — This species was originally described from Nakusp, British Columbia, Canada, on Ranunculus sp. as T. (Amblyseius) berlesei ( Chant 1957) . In 1959, this species was renamed to A. krantzi ( Chant 1959) . In Russia, this species was previously recorded from the Moscow ( Meshkov 1999) and Yaroslavl provinces ( Wainstein 1975). This species is recorded for the first time in Asian Russia. The characteristics of the specimens herein considered agree well with Characters Russia, China Iran Characters Russia, China Iran

Tyumen district (5) (?) (2) Tyumen district (5) (?) (2)

Dsl 333 (327-344) 355-380 368-372 z2 12 (11-14) 12,5-17,5 12-14

Dsw 230 (227-236) 240-265 228 z4 12 (10-14) 12,5 12-14

j1 22 (21-24) 23,75-25 24-26 z5 5 6,25-7,5 5-6

j3 40 (39-43) 36,25-48,75 41-45 Z1 6 (6-7) 10-12,5 8-10

j4 6 6,25-7,5 6 Z4 86 (82-91) 85-95 92-102

j5 5 (5-6) 6,25 4-5 Z5 139 (132-148) 155-157,5 157-174

j6 5 (5-6) 7,5 5 Vsl 104 (103-113) 117,5 108-126

J2 5 (5-6) 7,5-8,5 6 Vsw ZV2 86 (81-89) 97,5 90-94

J5 11 (11-12) 8,75-13,5 9-10 JV5 68 (67-69) 75,5-80 78-81

r3 15 15-17,5 17 SgeIV 69 (65-75) 80 74-85

R1 9 (8-9) 11,25 9 StiIV 53 (47-59) 62,5-75 61-67

s4 58 (56-64) 60-65 68 StIV 55 (51-59) 60-70 50-61

S2 9 (9-10) 11,25-12,5 10-12 Nbf 4 - 4

S4 10 (9-10) 10-12,5 9-10 Nbm 2 - 2

S5 11 11,25 -12,5 8-10

those of the descriptions given by Chant and Hunsell (1971), Congdon (2002) and Kolodochka and Gwiazdowicz (2016). However, the number of teeth on the movable digit in the material here observed is a variable character as some females had two teeth instead of three in the original description and further redescriptions. This species is common on grassy plants in dark spruce forests or in mixed forests with a predominance of spruce. It could be often found together with Amblyseius rademacheri Dosse (personal observation).

Figures

Figure 26 Apical sensorial setal cluster area and setaed3 andd4 of tarsus I, female, right leg, dorsal aspect: A – Amblyseius silvaticus Chant, 1959; B – Amblyseius ampullosus Wu and Lan, 1991, C – Amblyseius krantzi Chant, 1959, D – Amblyseius meridionalis Berlese, 1914.