Amblyseius microorientalis Wainstein & Begliarov, 1971

Kolodochka, L. O., 2024, Predatory Mites (Parasitiformes, Phytoseiidae) Of The Fauna Of Ukraine: Review Of The Genus Amblyseius With A Key To Species, Zoodiversity 58 (6), pp. 461-496 : 475-477

Amblyseius microorientalis Wainstein & Begliarov, 1971 ( fig. 7 )

Amblyseius microorientalis Wainstein & Begjarov, 1971: 1808 .

Amblyseius (Amblyseius) microorientalis : Wainstein, 1979: 140.

Material. Type. Holotype}, Russia, Primorsky Territory , reserve “Kedrovaya Pad”, on Quercus sp. , 14.06.1961, specimen #635 (Beglyarov) ( ARRIP).

Non-type. 22 specimens (16}, 6 {) — Lviv, Transcarpatian, Sumy Regions .

R e d e s c r i p t i o n. F e m a l e. The dorsal shield ( fig. 7 , 1 ) is weakly sclerotised, elongated oval, with slight lateral notches, smooth; small solenostomes 7 pairs (it, iv, id, isc, il, is, ic). The dorsal setae are mostly very short, with the exception of a few pairs of elongated ones (AM1, AL4, PM3, PM4). All setae are smooth, pointed, except for weakly serrated PM4 with fusiform clubs, relatively very long (more than 2 times longer than PM2 setae). Seta AL1 is equal to 2/3 of the distance to the seta AL3. Setae AL1 and AL3 are equal in length. The seta PL1, PL2 and PL3 are also approximately equal in length (the difference may be 1–2 µm). Setae PS are short; setae AS are microchaetes. Peritremes long, extending beyond the base of setae AD1. The ventrianal shield is slightly wider than the genital shield, elongated, with lateral notches, smooth; anal pores rounded, close together ( fig. 7 , 2 ). The anterior metapodal shield is small and narrow, the posterior one is elongated-oval ( fig. 7 , 3 ). The posterior part of the peritremal shield is slightly curved, with a small pore at the widened coracoid end ( fig. 7 , 4 ). There are 9 large teeth on the Df chelicerae, and 3 on the Dm ( fig. 7 , 5 ). The spermatheca is small, the funnel is finger-shaped, asymmetrical; the outer walls of the funnel are completely covered with very small tubercles ( fig. 7 , 6 shows a general view of the spermatheca and a fragment of the surface of the funnel); seated atrium. Leg IV has 3 macrochaetes; on the knee it is longest, on the tibia and basitarsus it is shorter ( fig. 7, 7 ); on the knees are the 3rd–1st pairs of legs, also along a short macrochaete.

Measurements: Lds 370, Wds 210, Lvas 117, Wvas 88, Lian 24, Ltar IV 120; setae length: AD1 24; AD2 7; AD3 6; AD4 7; PD2 8; PD4 6; AM1 39; AM2 6; AL1 16; AL3 16; AL4 58; PL1 13; PL2 10; PL3 10; PM1 6; PM3 65; PM4 145–160; AS 18; PS 10; РV 55; MCh IV: ge 65, ti 58, ta 52; MCh III: ge 33; MCh II: ge 27; MCh I ge 30.

Male. Preanal setae 3 pairs of setae; anal pores are large, oval ( fig. 7 , 8 ). The spermatodactyl is slightly curved, significantly narrowing at the end, without processes, but with a narrow longitudinal lobe ( fig. 7 , 9 ). Lds — 270.

D i f f e r e n t i a l d i a g n o s i s. The combination of the distinctively long dorsal setae PM4, which are more than twice as long as the setae PM3, and a finger-shaped spermatheca with a funnel covered with very small tubercles, distinguishes this species within the genus. See also differential diagnosis of Amblyseius irinae Wainstein & Arutunjan.

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 ( Russia: Primorsky Krai; Ukraine). In Ukraine: Polissia, trees, shrubs; common.

Note. Description, morphometry and illustrations are given for non-type specimens from the Sumy Region after comparing them with specimens from the collection of B. A. Wainstein and illustrations of this species in publications by various authors.

Figures

Fig. 7. Amblyseius microorientalis Wainstein & Begjarov, 1971.} (1–7), {(8, 9): 1 — dorsal shield; 2 —ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 1. Amblyseius andersoni (Chant, 1957).} (1–7), {(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.

Fig.2. Amblyseius filixis Karg, 1970.} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 —metapodal plates; 4 — caudal part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 3. Amblyseius irinae Wainstein et Arutunjan, 1973.} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig.4.Amblyseius kalandadzei Gomelauri, 1968 b.} (1–7), {(8, 9): 1 — dorsal shield; 2 — caudal part of ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 5. Amblyseius krantzi(Chant,1959).} (1–7), {(8, 9): 1 — dorsal shield; 2 —ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 6. Amblyseius meridionalis (Berlese, 1914).} (1–7), {(8, 9): 1 — dorsal shield; 2 —ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 8. Amblyseius nemorivagus Athias-Henriot, 1961.} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera.

Fig. 9. Amblyseius neobernhardi Athias-Henriot, 1966.}: 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — caudal part of peritremal shield;5 — chelicerae; 6 — spermatheca; 7 — fragment of leg IV.