Amblyseiulus ovicinctus ( Athias-Henriot, 1961 )

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 : 121-123

Amblyseiulus ovicinctus ( Athias-Henriot, 1961) ( fig. 8 )

Amblyseius ovicinctus Athias-Henriot, 1961: 421 ; Wainstein & Shcherbak, 1972: 43;

Typhlodromus ovicinctus : Hirschmann, 1962: 4, Taf. 6, fig. 114;

Amblyseius ovicinctus : Athias-Henriot, 1966: 190;

Amblyseius ovicinctus : Giliarov et al., 1977: 238.

Proprioseiopsis ovicinctus : Moraes, de et al., 1986: 121; Karg, 1993: 175; Chant & McMurtry, 2007: 89.

Material. Type. “ Holotype ♀, Iberian Peninsula, Sierra de Estrella (N-<Northern> Portugal), Gesiebe an Quelle uber der Strasse von Maitengas am Hang des Gebirges entland, (No. of the specimen unknown), 22.07 1955" (cit.: Athias-Henriot, 1961: 421) (not examined; description made on single non-type specimen from Ukraine) .

Non-type. Ukraine: Kyiv Region, Liutezh , mixed forest, dry moss with sod, 04.06.1968, specimen #3550– 15(4), 1 ♀, 50°40'00.0" N, 32°24'02.0" E (G. Shcherbak) (in B. A. Wainstein' collection, SYZK) .

Redescription. Female. Dorsal shield ( fig. 1, 1 ) well sclerotized, oval, without lateral emarginations, smooth, with dark lateral border; solenostomes 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae sharp, smooth, only PM 3 and PM 4 with few serrations. Setae AL4, PM 3, and PM 4 long, thickened; AD1, AM 1 and AL1 are small, the rest are short and microsetae. Seta AM 1 shorter than distance from its theca to theca of seta AL1. Seta AL1 more than twice as long as seta AL3 and shorter than distance to its theca. Seta AL3 strongly displaced toward axis of dorsal shield from common arc of setae AM 1–AL1–AL4 and located on line joining the thecae of setae AL1– AM 2. Thus, the setae of the AD1 pair are moved away from the axial line of the dorsal shield, while the setae AM 1 are moved closer to it, as compared with the common location of the same pairs of setae in species of related genera. The peritremes extend slightly beyond the theca AD1. Ventrianal shield ( fig. 8 , 2 ) with slight transverse sculpture in anterior half, wider than genital shield, narrowing caudally, lateral margins convex, anterior margin concave; anal pores spaced, round, distinct, close to the thecae of PrA2 setae. Metapodal shields elongated; posterior shield wider than anterior one and 1, 6 times as long as it ( fig. 8 , 3 ). The spermatheca is medium in size, the walls of the short conical infundibulum are slightly thickened; atrium sessile, large ( fig. 8 , 4 ). Df chelicera with 9 teeth (2 distal, 7 others in one medial row), Dm with 2 teeth ( fig. 8 , 5 ). The posterior end of the peritremal shield is sickle-shaped, pointed ( fig. 8 , 6 ). Leg IV has 3 thick macrosetae: on the genu, tibia, and basitarsus, the last of which is the longest ( fig. 8 , 7 ). Leg III with a short macrosetae at genu and a longer one at tibia. Leg II with a short macrochaete at genu.

Measurements. Lds 365, Wds 270; Lvas 102, Wvas 100, Lian 37; Ltar 118; setae length: AD1 23; AD2 4; AD3 4; AD4 6; PD 4 8, AM 1 37; AM 2 5; AL1 18; AL3 7; AL4 78; PL 1 7; PL 2 8; PL 3 10; PM 1 6; PM 3 110; PM 4 130; AS 12; PS 4; PV 54; MCh IV: ge 75, ti 60, ta 53; MCh III: ge 32, ti 21; MCh II: ge 27; MCh I: ge 22.

M a l e. The original description of the male consists of note about free ventrianal shield, T-shaped spermatodactyl and does not contain morphometry and drawings. In the specimen from Ukraine studied by the author, the male was not found (please see Note below).

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 ( Portugal, Russia; Ukraine). In Ukraine: moss and turf in pine and mixed forest (Kyiv Region); rare.

Diagnosis. A. ovicinctus is similar to A. messor in having long and thickened dorsal setae AL4, PM 3, and PM 4, contrasting in length with the rest of setae on dorsal shield. The difference between the two species is that the setae PM 4 in A. ovicinctus near 1.5 times shorter than those in A. messor (130 against 188 µm) and do not exceed half the width of the dorsal shield at the level of setae PM 1. In addition, the number of teeth on the fingers of chelicerae in these species is also different ( A. ovicinctus has 9 teeth on Df and 2 on Dm, while A. messor has 3 teeth on Df and 1 on Dm).

Figures

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. 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. 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.