Amblyseius irinae Wainstein & Arutunjan 1973
Creators: name: Kolodochka, L. O.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Amblyseius
Amblyseius irinae

description: Amblyseius irinae Wainstein & Arutunjan, 1973 (fig. 3)
Amblyseius irinae Wainstein & Arutunjan, 1973: 55; Ghiliarov et al., 1978: 236; Kolodochka, 2006: 228.
Material. Type. Holotype}, Armenia, Stepanavan district, Brick factory, mixed forest, Fragaria sp., 11.07.1971, specimen #643 (not examined) (IZAY).
Non-type. Ukraine, Transcarpathian Region, Perechin District, Turia Poliana village, meadow, Betonica officinalis, 09.10.1975, specimen # №2410, 1}; Lviv Region, Stryi District, Morshyn forestry, Grabniky, mixed forest, Crataegus sp., 07.22.1983, # 4377 a, 6}, 2 {; ibid., the same data, #4377 b, 1}, 1 {(Kolodochka) (SIZK).
Redescription. Female. The dorsal shield (fig. 3, 1) is moderately sclerotised, smooth, with a clearly defined marginal border, ovoid, with almost absent lateral notches; solenostomies 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae vary in length — setae PM4 are whip-shaped, thin, flexible, with a weak club at the end (the remaining setae are sharp); AL3 and PM3 are long, thin, flexible; AD1 and AM1 are elongated; the rest are short or microchaetes. All dorsal setae are smooth, except for the weakly serrated PM3 and PM4. Peritremes extend anteriorly beyond the level of thecae AD1, which in turn extend beyond the thecae of the setae AM1. Seta slightly longer than the distance to the theca of seta AL1. Seta AL3 exceeds the distance to theca PM1. Seta PM4 is close to PL2. The ventral shields are moderately sclerotised. The ventrianal shield (fig. 3, 2) is somewhat wider than the genital shield, elongated, with an almost straight or somewhat convex anterior edge and slightly concave lateral edges, tapering caudally; anal pores semilunar, located close to the thecae of the PV setae. Metapodal scutes are roughly fusiform, with uneven edges, the posterior one is approximately 2.5 times longer than the anterior one (fig. 3, 3). The posterior end of the peritremal shield is slightly curved, beak-shaped at the end (fig. 3, 4). There are 10 small teeth on the Df chelicerae, and 3 on the Dm (fig. 3, 5). The funnel of the spermatheca is elongated-conical with a somewhat thickened wall; the atrium is large, sessile (fig. 3, 6). Leg IV has 3 long, sharp macrochaetes: the longest is on the knee (fig. 3, 7); relatively shorter macrochaetes are present on the knees of legs III–I.
Measurements: Lds 433, Wds 288; Lvas 143, Wvas 118; Lian 34; Ltar 163; setae length: AD1 32, AM1 56, AL3 109, PM3 145, PM4 255; остальные дорсальные щетинки не длиннее 10; PV 95; MCh IV: ge 122–130, ti 111–113, ta 91–97; MCh III: ge 54; MCh II: ge 39; MCh I: ge 47.
Male (previously unknown). Ventrianal shield with four pairs of setae. The shield may contain 1 of a pair of additional bristles, shown in the dotted line in the figure. The anal pores are semilunar, close to the thecae of the setae PrA2 (fig. 3, 8). The spermatodactyl is L-shaped (fig. 3, 9). Lds — 330.
D i f f e r e n t i a l d i a g n o s i s. The presence of relatively thin, very long (flagellated) dorsal setae PM4, smoothly tapering towards the ends with fusiform clubs, brings the species A. irinae and A. microorientalis Wainstein et Begjarov closer together.
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 (Ukraine), Southern Caucasus (Armenia). In Ukraine: Transcarpathian and Lviv Regions, herbs, shrubs; rare.
Note 1. Microscopic examination of a significant number of phytoseiid species indicates the absence of any formed structures in the lumen of the spermatheca before fertilization of the female.
The structural features of the spermatheca noted in the holotype of A. irinae is not confirmed in the studied material from Ukraine. This issue can be resolved after research on a statistically reliable amount of material.
Note 2. Description, morphometry and illustrations are given based on non-type specimens from the Lviv Region after comparing them with voucher specimens from the collection of B. A. Wainstein.
description: Published as part of Kolodochka, L. O., 2024, Predatory Mites (Parasitiformes, Phytoseiidae) Of The Fauna Of Ukraine: Review Of The Genus Amblyseius With A Key To Species, pp. 461-496 in Zoodiversity 58 (6) on pages 467-469, DOI: 10.15407/zoo2024.06.461, http://zenodo.org/record/14704320