Amblyseiulus sororculus

Kolodochka, L. A., 2024, Predatory Mites (Phytoseiidae, Parasitiformes) Of The Fauna Of Ukraine: Redescriptions Of The Species Of Amblyseiella And Chelaseius, With Resurrection Of The Genus Status For Amblyseiulus, Zoodiversity 58 (2), pp. 103-128 : 123-128

Amblyseiulus sororculus (Wainstein, I960) ( fig. 9 )

Typhlodromus sororculus Wainstein, I 960: 685;

Amblyseius sororculus : Athias-Henriot, 1966: 193;

Amblyseius sororculus : Abbasova, 1972: 16;

Amblyseius (Amblyseius) sororculus : Arutunjan, 1977: 34;

Amblyseius sororculus : Giliarov, 1977: 238;

Amblyseiulus sororculus : Karg, 1971: 202;

Amblyseius (Amblyseiulus) sororculus : Kolodochka, 1981: 45;

Proprioseiopsis sororculus : Moraes, de et al., 1986: 124; Karg, 1993: 177; Chant & McMurtry, 2007: 89; Denmark & Evans, 2019: 78.

Amblyseiulus levani Gomelauri, 1988 (synonymy by Abbasova, 1972: 18).

Material. Types. Syntypes: 1 ♀, Russia, Perm Region, in nests of mouse-like rodent Microtus arvalis ; 1 ♀, 10.04.1951, specimen #N1312 (Ланге); Moscow Region, specimen #2134, 1 ♀, 1956 ( SIZK, in collection B. A. Wainstein) (examined) .

Non-type. 17 specimens (16 ♀, 1 Ơ). Ukraine, Crimean Autonomous Republic, Karadag, N slope, soil near roots of Pinus sp. , 09.07.1975, specimen #356/1–2234 , 1 ♀, 44°53'12.0" N 35°16'44.0" E (G. Shcherbak.); Cape Kazantip , north coast, not far from the lighthouse, bush, Crataegus sp. , 30.05.1979, specimen #3411 , 1 ♀, 45°28'10.0" N 35°50'35.0" E; Arabat Spit, steppe area, env. Volok village , Echium vulgare , 06.06.1979, specimen #3467 , 5 ♀, 45°45'00.0" N 34°59'00.0" E (Kolodochka); Donetsk Region, Volodarka District, Nazarivka village, Stone Graves reserve , meadow, soil 0-5, 02.09.1973, specimen #S–74/239 , 1 ♀, 47°19'31.0" N 37°08'09.0" E; Boykivsk District, Khomutovska Steppe reserve , on a forest mouse, 19.07.1968, specimen #S–75/408 , 1 ♀ ,, 47°24'55.0" N 38°03' 7.0" E; idem, nest of a forest mouse, 28.11.1967, specimen #S–81/51c , 1 ♀; idem, 07.07.1968, specimen #S–94/172 , 1 ♀;, idem, nest of Microtus arvalis , 05.10.1967, specimen #S– 164/14 , 1 ♀; Zaporozhye Region, Novonikolayevka town , litter, meadow, 24.09.1973, specimen #S–95/5b , 1 ♀, 47°58'34.0" N 35°54'20.0" E; Vasiliev District, Sofievka village, soil 0-5, Steppe , 24.09.1973, specimen #S–77/35 , 1 ♀, 47°24'37.0" N 35°17'05.0" E; Poltava City , litter under Picea sp. , 28.09.1975, specimen #S–120/ 79g , 1 ♀, 49°36'42.0" N 34°36'48.0" E; idem, the same data, specimen #S–122/79j, 1 Ơ, (Skliar); Kharkiv Region, Izium District, Komarovka village , on Microtus rossiaemeridionalis , 10.04 1968, specimen #S–509/38 , 1 ♀, 49°16'35.0" N 37°15'44.0" E ( Naglov ) ( SIZK) .

R e d e s c r i p t i o n. F e m a l e. Dorsal shield ( fig. 9 , 1 ) smooth, strongly sclerotized, with dark marginal border, solenostomes 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae fine, sharp, smooth, except for slightly thickened and very weakly serrate PM 3 and PM 4. Setae AL1, PM 1, and PS 1.5–2 times, and AL1 and AS 2.5–3 times as long as very short AD2–AD4, PD 4, AM 2, and PL 1– PL 3. Seta AL3 markedly shifted toward axis of shield from common arc of setae AM 1–AL1–AL4. Peritremes nearly reaches the thecae of setae AD1. Ventrianal shield ( fig. 8 , 2 ) finely transversely striated; anal pores are large, round, widely spaced, often asymmetrically placed (one of the pores is displaced caudally relative to the other), which noted in the original description, but is not always maintained on a sufficiently representative sample. Metapodal shields elongated, posterior one not less than 2.4 times as long as anterior ( fig. 9 , 3 ). The posterior part of the peritremal shield is very narrow, crescentshaped ( fig. 9 , 4 ). There are 4 teeth on Df of the chelicerae, and 1 tooth on Dm ( fig. 9 , 5 ). The funnel walls of the spermatheca are thickened, the atrium is large and merged with the base of the funnel ( fig. 9 , 6 ). On leg IV there are elongated macrochaetes: on tibia shorter than others ( fig. 9 , 7 ), on maple and tibia of leg III along a short macrochaete.

Measurements. Lds 400, Wds 275; Lvas 127, Wvas 110; Lian 54; L tar 130; setae length: AD1 22; AD2 3; AD3 3; AD4 9; PD 4 9; AM 1 30; AM 2 3; AL1 18; AL3 9; AL4 54; PM 1 13; PL 1 9; PL 2 9; PL 3 9; PM 3 68; PM 4 79; AS 18; PS 14; PV 54; MCh IV: ge 56, ti 43, ta 60, MCh III: ti 25, ge 21.

Male. Preanal setae 3 pairs; anal pores small, round, spaced apart ( fig. 9 , 6 ). The spermatodactyl is large, L-shaped ( fig. 9 , 7 ).

Diagnosis. A. sororculus differs from similar A. okanagensis in short dorsal setae AL1 and AL3, as well as in a different ratio of their lengths (in A. sororculus AL 1 is 2 times as long as AL3, but in A. okanagensis AL 1 is 1.5 times as short as AL 3). In addition, seta AL 3 in A. sororculus is four times shorter than the distance to the theca of seta AL4, while seta AL 3 in A. okanagensis almost equal of seta AL4. In the female A. sororculus , the ventrianal shield is narrower than in A. okanagensis , and the males of thees species are well distinguished by the structure of the spermatodactyl.

D i s t r i b u t i o n, h a b i t a t, o c c u r r e n c e. Europe, Transcaucasia. In Ukraine: Woodand-Steppe zone, and Steppe zone; shrubs, herbs, grasses, litter, soil; on small rodents and in their nests; ordinary.

Key to species of three phytoseiid genera of Ukrainian fauna

1. Dorsal setae of PL3 pair absent; ventrianal shield with 1 pair of preanal setae (PrA2). .............................. Amblyseiella Muma (one speceis known in Ukraine — A. antonii Kolodochka & Omeri, 2010 ).

— Dorsal setae of PL3 pair present; ventrianal shield with 3 pair of preanal setae (PrA1, PrA2, V2) ........ 2

2. Dorsal setae PD2 pair absent. ........................................................................ Chelaseius Muma & Denmark (one speceis known in Ukraine — Ch. valliculosus ( Pontoseius ) Kolodochka, 1987).

— Dorsal setae PD2 pair absent. ...................................................................................... Amblyseiulus Muma 3

3. Six pairs of solenostomes on dorsal shield (id pair absent); solenostome il shifted to edge of dorsal shield. ............................................................................................................................... A. mauiensis (Prasad)

— Seven pairs of solenostomes present on dorsal shield; solenostome il is in usual position for species of the family ............................................................................................................................................................. 4

4. The length of seta PM4 is equal to the distance between the thecae of setae of PM3 pair. ...................... 5

— Seta PM4 1.2 times shorter than the distance between the thecae of setae of PM3 pair. ......................... 7

5. Seta AL1 equal to or longer than the distance from its own theca to theca AL3; seta PL3 equal to distance from its theca to theca PM4; Df with 4 teeth, Dm with 1; funnel of spermateca as a whole is narrow, with a moderately thickened wall. ......................................................................................... A. messor (Wanstein)

— Seta AL1 shorter than distance to theca AL3; seta PL3 2 times shorter than distance from its theca to theca PM4; Df with 9 teeth, Dm with 2; funnel short, widly conical with thick wall ............................... 6

6. Wall of spermateca funnel significantly thickened .......................................... A. jugortus (Atias-Henriot)

— Wall of spermateca funnel moderately thickened ......................................... A. ovicinctus (Atias-Henriot)

7. Many dorsal setae in lateral row weakly serrated (AM1, AL1, AL3, AL4, PL1, PL2, PM2, PM3) .............. ....................................................................................................................................... A. bregetovae (Abbasova)

— All dorsal setae smooth, except for weakly serrated setae of pairs PM3 and PM4 .................................... 8

8. Setae AM1, AL1, AL3 longer than the distance from their own tecae to the tecae of subsequent setae ................................................................................................................................ A. okanagensis (Chant)

— Setae AM1, AL1, AL3 shorter than distance from their own tecae to tecae of subsequent setae. .............. ...................................................................................................................................... A. sororculus (Wainstein)

Acknowledgments

This study was funded for I. I. Schmalhausen Institute of Zoology of the National Academy of Sciences of Ukraine ( State Registration Number of the work: 0116U003015, II-51-21 ) by the National Academy of Sciences of Ukraine. The type material for this study was obtained by author with the kind assistance of Professor D. A. Chant and Dr. Eiko Shaul (Canadian National Collection, Toronto, Canada), for which the author once again expresses his gratitude .

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Received 22 August 2023

Accepted 22 February 2024

Figures

Fig. 9. Amblyseiulus sororculus (Wainstein, I960) ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.

Fig. 1. Amblyseiella antonii Kolodochka & Omeri, 2010 ♀ (1–9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — genu; 8 — tibia; 9 — tarsus (fragment).

Fig. 8. Amblyseiulus ovicinctus (Athias-Henriot, 1961) ♀ (1–7): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV.

Fig. 2. Chelaseius valliculosus Kolodochka, 1987 ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl; 10 — distitarsus of leg I.

Fig. 3. Amblyseiulus bregetovae (Abbasova, 1970) ♀ (1–7): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV.

Fig. 4. Amblyseiulus jugortus (Athias-Henriot, 1966) (fig. 4) ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.

Fig. 5. Amblyseiulus mauiensis (Prasad, 1968) ♀ (1–7): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV.

Fig. 6. Amblyseiulus messor (Wainstein, 1960) ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.

Fig. 7. Amblyseiulus okanagensis (Chant, 1957) ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.