Transeius montanus ( Wainstein, 1962 ) Kolodochka, 2023

Kolodochka, L. A., 2023, The Predatory Mites (Phytoseiidae, Parasitiformes) In The Fauna Of Ukraine: A Review With A Key To Species And New Combinations In The Genus Transeius, Zoodiversity 57 (3), pp. 191-214 : 206

Transeius montanus ( Wainstein, 1962) , comb. n. ( fig. 7 )

Amblyseius montanus Wainstein, 1962: 234 ; 1977: 240; Athias-Henriot, 1966: 220;

Typhlodromus montanus: Hirschmann, 1962: 256 ;

Neoseiulus montanus: Moraes et al., 1986: 90 ; Chant & McMurtry, 2007: 29.

Material. Type. Syntype ♀: [ Kazakhstan], Trans-Ili Alatau , 1200–1500 m a. s. l., predominantly in coniferous forest, on various herbaceous plants, 20.06.1957, slide #1927 ( SIZK) .

Non-type. 133 ♀, 26 Ơ (159 specimens): Ukraine: Transcarpathian Region .

R e d e s c r i p t i o n. Fe m a l e. Dorsal shield ( fig. 7 , 1 ) well sclerotized, oval-ovate, with shallow lateral emarginations, smooth, with a dark border along the edge; solenostomes 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae PM3 and PM4 longest, thickened, slightly serrated; AM1 and AL3 are noticeably shorter of them, the rest are even shorter and aligned in length, and smooth. All dorsal setae shorter than distance to the next setae in the row. Seta AL1 half as long the distance to the theca of seta AL2. Setae PL1–PL3 equal in length. Peritreme extend beyond the theca of seta AD1. Genital shield narrower than ventrianal shield, elongated and pentagonal ( fig. 7 , 2 ), with almost parallel or slightly concave lateral margins; anal pores large, not shift to each other, slit-like, surrounded by cuticular ridge, which visually makes them larger. Metapodal shields distinct, narrow anterior one about half as long as larger posterior one ( fig. 7 , 3 ). The posterior part of the peritremal shield from the stigma at first some narrows, then sharply widens caudally and ends in a coracoid ( fig. 7 , 4 ). Chelicera has to 7 teeth on Df, and 1 on Dm ( fig. 7 , 5 ). The funnel of the spermatheca is goblet; atrium sessile ( fig. 7 , 6 ). Leg IV with 3 large macrosetae: longest on basitarsus, shortest on tibia ( fig. 7, 7 ). Genu III with short macrosetа.

Measurements: Lds 370, Wds 225, Lvas 130, Wvas 105, Lian 33, Ltar IV 150; seta length: AD1 23; AD2 13, AD3 10; AD4 14; PD2 16; PD4 13; AM1 31; АМ2 9; AL1 16; AL3 23; AL4 51; PL1 22; PL2 23; PL3 22; PM1; PM3 61; РМ4 79; AS 23; PS 17; PV 44; MCh IV: ge 55, ti 39; ta 63, MCh III: ge 30.

Male. Ventrianal shield with 3 pairs of preanal setae, sometimes with one or both setae of an additional pair; anal pores large ( fig. 7 , 8 ). The spermatodactyl L-shaped, with a funnel-shaped extension at the end ( fig. 7 , 9 ). Lds 326.

Diagnosis. The species T. montanus is similar to T. volgini , from which it differs in the longer dorsal setae AD2, AM2, AD3, AD4, PD1 (9–16 μm), while in T. volgini their length is 5–8 μm; seta AL1 shorter than AL3 (on the contrary, in T. volgini AL 3 longer than AL1); in T. montanus , seta PM1 somewhat shorter than PL3 (respectively, 18 and 22 μm), while in T. volgini they are equal in length (both 10 μm); setae PL1, PL2, PL 3 in T.montanus of equal length (possible difference is no more than 1 μm), while in T. volgini their length is 23, 12, 10 μm; chelicera of T. montanus with 1 tooth on Dm, T. volgini with 3.

D i s t r i but i on, h abit at, o c c u r re n c e. Europe ( Ukraine), Caucasus ( Georgia), Tien Shan ( Kazakhstan). In Ukraine: Transcarpathian Region, near 800 m a. s. l., prefers herbs, rarely shrubs ( Malus sp. ); ordinary.

Notes. 1. Description, measurements and illustrations are based on non-type specimens from the Transcarpathian Region after comparing them with the type material of this species .

2. The text of the original description indicates that the number of pairs of the “small slit-like organs” (= dorsal solenostomes) is 5 (p. 235, first line from the top), whereas actually there are seven pairs of them.

Figures

Fig. 7. Transeius montanus (Wainstein, 1962), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 1. Transeius begljarovi (Abbasova, 1970), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 2. Transeius fragilis (Kolodochka et Bondarenko, 1993), ♀ (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. 3. Transeius herbarius (Wainstein, 1960), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV (macrosetae shown only); 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 4. Transeius jailensis (Коlоdосhka, 1981), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV (macrosetae shown only); 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 5. Transeius lutezhicus (Wainstein, 1972), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 6. Transeius masseei (Nesbitt, 1951), ♀ (1–7), Ơ (8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV (macrosetae shown only); 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 8. Transeius proximus (Кolоdoсhкa, 1991), ♀ (1–9), Amblyseius (Amblyseius) avetianae Arutujan et Ohandjanian, 1972 (10): 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 — chelicera; 9, 10 — spermatheca.

Fig. 9. Transeius volgini (Wainstein et Beglyarov, 1971), ♀ (1–8), Ơ (9, 10): 1 — dorsal shield; 2 — backward curved ends of peritremes; 3 — posterior part of ventral body surface; 4 — metapodal plates; 5 — posterior part of peritremal shield; 6 — chelicera; 7 — spermatheca; 8 — fragment of leg IV; 9 — ventrianal shield; 10 — chelicerae with spermatodactil.