Typhlodromips mistassini ( Chant & Hansell, 1971 )

Kolodochka, L. A., 2023, The Predatory Mites (Phytoseiidae, Parasitiformes) In The Fauna Of Ukraine: Genera Paragigagnatus, Carinoseius, Kampimodromus, Eharius, Typhlodromips, And Euseius, Zoodiversity 57 (6), pp. 477-506 : 497-499

Typhlodromips mistassini ( Chant & Hansell, 1971) ( fig. 8 )

Neoseiulus mistassini Chant & Hansell, 1971: 709 .

Typhlodromalus mistassini : Moraes et al., 1986: 132; Chant & McMurtry, 2007: 63.

Material. Type. Holotype}: #11984, Canada, Quebec, Mistassini Territory, Lake LeCordier , on silver birch [ Betula pendula ], 17.08.1971, Canadian National Collection, Ottawa ( CNC).

Non-Type. Ukraine, Chernigiv Region , Ripky District, env. Oleshnia village, near river, Alnus glutinosa , 17.07.1984, specimen #4706, 2}, 1 {, 51°56'02,0" N 31°05'21.0" E (Kolodochka) ( SIZK) .

R e d e s c r i p t i o n. F e m a l e. Dorsal shield ( fig. 8 , 1 ) relatively weakly sclerotised, elongate-oval with slight lateral emarginations, smooth, with narrow stripe of thin oblique striation only along lateral margins; 7 pairs of medium-sized solenostomes (it, iv, id, isc, il, is, ic). Setae of dorsal shield short, pointed, smooth, except for thickened and serrated PM 4 and PM 3 with 1–3 serrations. Seta AM 1 equal or shorter than distance to theca AL 1. Setae of rows AL and PL short, do not reach the theca of subsequent setae, only PM 3 is sometimes equal to the distance to the theca PL 4. Peritremes reach level of setae AM 1. Ventrianal shield not wider than genital one ( fig. 8 , 2 ), elongated, vase-shaped, weakly sclerotised and finely transversely striated, with three pairs of preanal setae; anal pores large, oval. The anterior metapodal shield is linear, the posterior one is elongated ( fig. 8 , 3 ). The posterior part of the peritremal shield is curved, rounded at the end with a coracoid process ( fig. 8 , 4 ). There are 8 teeth on Df of the chelicerae, and 2 on Dm ( fig. 8 , 5 ). Spermatheca with a cone-shaped funnel, often asymmetric; atrium sessile, pressed into funnel, which is covered with very small tubercles in the part adjacent to atrium ( fig. 8 , 6 ). Leg IV with 3 short thickened sharp macrochaetes ( fig. 8 , 7 ). Genu of legs III–II with short macrochaete.

M e a s u r e m e n t s. Lds 400, Wds 224; Lvas 111, Wvas 73; Lian 25; Ltar 115; setae length: AD 1 25; AD 2 18; AD 3 18; AD 4 19; PD 2 23; PD 4 9; AM 1 36; AM 2 10; AL 1 32; AL 3 38; AL 4 42; PL 1 32; PL 2 30; PL 3 29; PM 1 27; PM 3 38; PM 4 63; AS 25; PS 20; PV 36. MCh IV: ge 32, ti 32, ta 32, MCh III: ge 29; MCh II: ge 23.

Male. There are 3 pairs of preanal setae, an additional pair may be present, in which both setae are not always present; the anal pores are closer together than in the female ( fig. 8, 8 ). Spermatodactyl with a short and wide stem as well with developed branch extending from stem at a right angle ( fig. 8 , 9 ). Lds 330.

Diagnosis. Neoseiulus mistassini easily differs from other species of phytoseiids living in Ukraine by the combination of features: a vase-shaped ventrianal shield with large displaced anal pores, a spermatheca funnel partially covered with tiny tubercles, and a massive L-shaped male spermatodactyl.

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 ( Lithuania, Russia, Ukraine), North America ( Canada). In Ukraine: Novgorod-Siversk Polissia, trees ( Alnus glutinosa ); rare.

Note. The holotype was measured. Description and illustrations are based on non-type specimens from Chernihiv District, Ukraine

Tribe Euseiini

Subtribe Euseiina

Genus Euseius Wainstein, 1962

Type species: Seius finlandicus Oudemans, 1915: 183 .

finlandicus group: Athias-Henriot, 1957: 23; Chant, 1959: 67.

Amblyseius (Amblyseius) section Euseius Wainstein, 1962: 15 .

Amblyseius (Amblyseius) section Afrodromus Wainstein, 1962: 17.

Amblyseius (Euseius) : De Leon, 1965: 121.

Euseius : De Leon, 1967:86; Kolodochka, 2006: 98; Chant & McMurtry, 2007: 118; Papadoulis et al., 2009: 26.

Amblyseius : Kolodochka, 1978: 20 (in part).

victoriensis group: Schicha, 1987: 24.

Amblyseius (Amblyseius) finlandicus group: Ueckermann & Loots, 1988: 61.

Genus profile. Idiosome shields are weakly sclerotised. The dorsal shield of the female is smooth or with weakly reticulate sculpture, with 17 pairs of setae and up to 7 pairs of solenostomes (it, iv, id, isc, il, is, ic; the it pair may be absent in some species not found on the territory of Ukraine). Dorsal shield with 17 pairs setae: AD1, AD2, AD3, AD4; PD1, PD4; AM1, AM2; AL1, AL3, AL4; PL1, PL2, PL3; PM1, PM3, PM4 — on the dorsal shield; AS; PS (both on interscutal membrane), setae smooth, medium in size, even in length, except for PM3, which are longer than the others and usually serrated. Peritremes shortened (reaching level of setae AM1) or shorter (extending beyond level AS only), with chaetoids. Sternal shield with 3 pairs of setae, 2 pairs of slit-like or oval pores, and a central lobe-like process along its posterior margin ( fig. 9 , 2 ; 10 , 2 ). Metapodal scutes 1 pair (anterior scutellum reduced). Ventrianal shield one-piece, elongated, with lateral notches; distinct anal pores oval. Preanal setae arranged in almost regular transverse row. The legs are thin, elongated. Three macrochaete distinctly expressed on basitarsus of legs IV. The other legs may also have short macrochaetes. Gnathosoma of normal proportions in relation to idiosoma. Chelicerae are relatively small, teeth on Df are small.

D i a g n o s i s. Spesies of this genus differs from other mites of tribes in the arrangement of ventroanal setae in an almost regular transverse row and in the presence of only one pair of metapodal scutes.

There are 187 nominal species in the genus ( Chant & McMurtry, 2007: 61); only two are recorded in Ukraine.

Figures

Fig. 8. Typhlodromips mistassini (Chant & Hansell)} (1–8), {(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 — Dm of chelicerae with spermatodactil.

Fig. 1. Paragigagnathus insuetus (Livschitz & Kuznetzov, 1972)} (1–7), {(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; 10 — seta PM4; 11 — seta PD4; 12 — гнатосома (seta no shown), Gb — gnathobrachium.

Fig. 2. Carinoseius improvisus (Kolodochka, Bondarev, & Gwiazdowicz, 2015), comb. n.} (1–11): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — seta AS and peritreme; 8 — solenostome iv; 9 — solenostome il; 10 — solenostome is; 11 — solenostome ic.

Fig. 3. Kampimodromus aberrans (Oudemans, 1930 a)} (1–7), {(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. 4. Kampimodromus corylosus Kolodochka 2003} (1–7), {(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. 5. Kampimodromus karadaghensis Kolodochka 2005} (1–7, 11), {(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; 10 — macroseta on tarsus of leg IV.

Fig. 6. Eharius (Eharius) kostini (Коlоdосhka)} (1–7, 11), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — seta AS, peritreme with peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil; 10 — solenostome iv; 11–13 — samples of aberrations in the placement of preanal setae.

Fig. 7.Eharius (Zavicus) kuznetzovi (Коlоdосhka)} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — seta AS, peritreme with peritremal shield;5 — chelicera;6 — spermatheca;7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil; 10 — seta PM4; 11 — samples of aberrations in the placement of preanal setae.

Fig. 9. Euseius finlandicus (Oudemans, 1915)} (1–8), {(9, 10): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plate; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV (only macrosetae shown); 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 10. Euseius ucrainicus (Ко1оdосhkа, 1979)} (1–8), {(9, 10): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plate; 4 — posterior part of peritremal shield; 5 —chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.