Graminaseius (s. str.) graminis ( Chant, 1956 )

Kolodochka, L. A., 2022, The Predatory Mites (Phytoseiidae, Parasitiformes) In The Fauna Of Ukraine: A New Species And A New Subgenus Of The Genus Graminaseius, Zoodiversity 56 (6), pp. 463-472 : 465-466

Graminaseius (s. str.) graminis ( Chant, 1956) ( fig. 1 )

Amblyseius graminis Chant, 1956: 34 ; Karg, 1971: 211, 1993: 184; Kolodochka, 1978: 21 , 2006: 228; Kolodochka , Skliar, 1981: 183; Moraes et al., 2004: 26; Kolodochka , Omeri, 2011: 39.

Typhlodromus (Amblyseius) graminis: Chant, 1959: 89 .

Amblyseius (Typhlodromopsis) graminis: Muma, 1961: 287 .

Typhlodromus (Typhlodromus) graminis: Westerboer, Bernhard, 1963: 636 .

Amblyseius (Amblyseius) graminis: Wainstein, 1975: 920 ; Arutunjan, 1977: 36.

Neoseiulus graminis: Moraes et al., 1986: 81 .

Graminaseius graminis: Chant & McMurtry, 2007: 854 .

Typhlodromus (Typhlodromus) exiguus Westerboer in: Westerboer & Bernhard, 1963: 628 (synonymy by Athias-Henriot, 1966: 218).

M a t e r i a l. Type. Holotype ♀: England, Kent, East Malling , on grass (No. of the slide unknown), (Natural History Museum London) (not examined).

Non-type. Ukraine: Autonomous Republic of Crimea, Cherkasy, Chernihiv, Donetsk, Kherson, Luhansk, Mykolaiv, Poltava, Rivne, Ternopil, Transcarpathian Regions , 276 specimens (244 ♀, 32 Ơ) ( SIZK) .

Female. Dorsal shield ( fig. 1, 1 ) well sclerotized, with dark marginal border, smooth, broadly oval, with lateral notches, 7 pairs of solenostomes (it, iv, id, isc, il, is, ic). Dorsal setae contrasting in length, smooth, except for slightly serrated PM4. Seta AM1 equal to or slightly longer than distance to theca AL1. Seta PL1 three times as long as PM1. Setae PL2 and PL3 almost equal in length and three times shorter than PL1. Perithremes slightly extending beyond the theca of setae AD1. Ventrianal shield with transverse striation, slightly concave anterior margin, and small lateral emarginations; anal pores distinct, round ( fig. 1 , 2 ). The posterior metapodal shield is expanded caudally, the anterior one is linear ( fig. 1 , 3 ). The posterior part of the peritremal shield is curved ( fig. 1 , 4 ). On Df chelicera 2 teeth, on Dm 1 ( fig. 1 , 5). The funnel of the spermatheca is narrow, goblet-shaped, with a slight constriction; the atrium is sessile ( fig. 1 , 6). Leg of IV pair has three macrosetae: the longest one is on the basitarsus ( fig. 1 , 7). Genu of III and II pairs of legs with short macroseta.

Measurements: Lds 350, Wds 205, Lvas 110, Wvas 95, Lian 42; Ltar IV 117. Setae length: AD1 22; AD2 11; AD3 8; AD4 8; PD2 8; PD4 8; AM1 33; AM2 6; AL1 22; AL3 25; AL4 53; PL1 33; PL2 10; PL3 8; PM1 11; PM3 60; PM4 80; AS 33; PS 16; PV 63. MCh IV: ge 47, ti 33, ta 70; MCh III: ge 22; MCh II: ge 22.

Male. Preanal setae 6 pairs; anal pores large ( fig. 1 , 8). The spermatodactyl massive, T-shaped ( fig. 1 , 9). Lds 275.

Diagnosis. Graminaseius graminis is similar habitually to Amblyseius begljarovi Abbasova and A. jailensis Kolodochka, but differs from them (besides of genus features in structure of the spermatheca), by the shape of ventrianal shield tapering caudally, goblet funnel of the spermatheca, and smaller number of teeth on chelicera (on Df 2 teeth, on Dm 1), whereas in A. begljarovi and A. jailensis the ventrianal shields are expanded caudally, the cone-shaped funnel of the spermatheca expands monotonously towards the sacculus, the fingers of the chelicerae have a significantly larger number of teeth (the first species has 8–9 teeth on Df and 3 teeth on Dm, the second one has 2 large distal teeth and 11 small teeth on Df, and 3 teeth on Dm).

Distribution, habitat, occurrence. North Africa, Southern Australia, North and South America, Caucasus, Europe, Middle East. In Ukraine: all natural zones, herbs, rarely shrubs; frequent.

Figures

Fig. 1. Graminaseius graminis (Chant, 1956) ♀ (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 — chelicera with spermatodactyl; 9 — ventrianal shield.

Fig. 2. Graminaseius lituatus (Athias-Henriot) ♀ (1–7), Ơ (8–10 from Athias-Henriot, 1961): 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, 10 — chelicera with spermatodactyl.

Fig. 3. Graminaseius alustoni (Livschitz et Kuznetzov, 1972) comb. n. ♀: 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — chelicera; 5 — spermatheca; 6 — posterior part of peritremal shield; 7 — fragment of leg IV.

Fig. 4. Graminaseius altimontanus Kolodochka, sp. n., holotype ♀: 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — spermatheca; 5 — posterior part of peritremal shield; 6 — fragment of leg IV.