Amblyseiulus bregetovae Abbasova, 1970

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 : 111-112

Amblyseiulus bregetovae Abbasova, 1970 ( fig. 3 )

Amblyseiulus bregetovae Abbasova, 1970: 53 ;

Amblyseius bregetovae : Ghiliarov et al., 1977: 240;

Proprioseiopsis bregetovae : Moraes, de et al., 1986: 112;

Proprioseiopsis bregetovae : Karg, 1993:176; Chant & McMurtry, 2007: 89.

Material. Types. Holotype ♀: Azerbaijan: Institute of Zoology of Azerbaijan, Laboratory of Acarology, Imishli, under haystack, 26.04.1963, specimen #70 ( Hadzhiev ) (not examined; the description and figures have been made on non-type specimen from Ukraine).

Non– type. 24 specimens (24 ♀). Ukraine: Donetsk Region, Boikovskiy District, Zazhytochnoie village , house mouse nest, 23.05.1968, specimen #S–98 (nest 135) , 11 ♀; item, common vole nest, 15.02.1968, specimen # S–99 (104 a), 8 ♀; ibid., the same data, specimen #S–100 (nest 104 b) , 2 ♀; Velikonovosiolkovsky District , under haystack from alfalfa, soil 0–5, 31.03.1972, specimen #S–101 (204) , 1 ♀; item, under haystack, same data, specimen #S–102 (208) , 1 ♀; ibid., 27.03.1972, specimen #S–103 (197) , 1 ♀ ( Sklyar ) ( SIZK) .

R e d e s c r i p t i o n. F e m a l e. Dorsal shield ( fig. 3 , 1 ) well sclerotized, broadly oval, without lateral emarginations, with dark marginal border, smooth, with very slight striation only on anterolateral margins; solenostomes 7 pairs (it, id, iv, il, isc, is, ic). Setae AD2, AD3, AM 2 are microchaetae (3–6 µm), AD4, PD 4, PM 1, PL 3 are short (10–20 µm), AD1, AL1, PL 2 are moderately long (30–40 µm), the rest are elongated. Setae AM 1, AL1–AL3, PL 1– PL 2, PM 3, and PM 4 serrate. Of these, AL1 and AL3 serrate in the distal half, the rest along the entire length of the seta. Seta AM 1 longer than distance to theca AL1. Setae AL1 and AL2 longer than the distance to the next setae. Seta AL3 more than 1.5 times and AL4 more than twice as long as seta AL1. Seta AL3 located in common arc of setae AM 1–AL1–AL3– AL4. Seta PL 1 1.5 times as long as PL 3 and three times as long as PL 4. Setae PM 4 slightly shorter than PM 2. Perithremes almost reaching the techae of setae AD1. Ventral shields strongly sclerotized. Ventrianal shield ( fig. 3 , 2 ) wide, roughly pentagonal, somewhat narrowing towards posterior margin, often with shallow cuts at anterolateral corners, transversely striated. The outlines of its lateral edges can be variable. The shield normally has 3 pairs of ventrianal setae. Sometimes one, rarely both PrA2 setae may be absent. Anal pores distinct, widely spaced. Metapodal scutes small, anterior curved ( fig. 3, 3 ). The posterior end of the peritremal shield is narrow, curved, and pointed ( fig. 3 , 4 ). Setae PV elongated, serrate. Chelicerae Df with 3 large distal teeth, Dm with 1 ( fig. 3 , 5 ). The spermatheca is relatively small; the walls of the funnel from the massive sessile atrium pressed into it become thinner towards the edges ( fig. 3 , 6 ). The legs look thin relative to the massive body. IV pair of macrochaetes on leg: longest on basitarsus, much shorter on genu and tibia ( fig. 3 , 7 ).

Measurements. Lds 408, Wds 290; Lvas 130, Wvas 156, Lian 56; Ltar 152; length of setae AD1 30; AD2 6; AD3 6; AD4 13; PD 4 11; AM 1 60; AM 2 3; AL1 43; AL3 77; AL4 93; ML 22; PL 1 68; PL 2 40; PL 3 20; PM 3 95; PM 4 83; AS 32; PS 16; PV 72, MCh IV: ge 45, ti 34, ta 77.

M a l e is unknown.

Diagnosis. A. bregetovae ( Abbasova, 1970) is distinguished from other species of this genus described here by several pairs of finely serrated setae located along the periphery of the dorsal shield ( AM 1, AL1, AL3, AL4, PL 1, PL 2, PM 3, and PM 4). In addition, it differs from the commonly encountered A. okanagensis (Chant) by the length of some dorsal setae or by the ratio of their lengths. Thus, dorsal setae PL 1 and PL 2 in A. bregetovae are 2.5 times as long, and PL 3 are 1.5 times as long as setae of the same name in A. okanagensis ; in the first species, PM 3 setae equal to PM 4 or only slightly shorter ( PM 3 95, PM 4 83), while in A. bregetovae , as in other species of the genus, PM 3 (77 µm) is distinctly shorter than PM 4 (112 µm).

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, Middle East. In

Ukraine: Steppe zone; under haystacks, in the nests of small rodents; rare.

Figures

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. 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. 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. 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.