Shevtchenkella ulmi ( Farkas, 1960 )

Kadono, Fujio, Takei, Madoka, Gotoh, Tetsuo, Kubota, Kenji, Hörweg, Christoph & Kagiwada, Satoshi, 2022, Supplementary descriptions of seven eriophyoid mite species (Acari: Eriophyoidea) recovered from the Viennese Nalepa collection and comparison with Japanese species, Acarologia 62 (2), pp. 273-301 : 289

Shevtchenkella ulmi ( Farkas, 1960)

Oxypleurites ulmi Farkas, 1960 pp. 330–331 figs. 41–43.

Oxypleurites ulmi: Farkas, 1965 p. 105 ; Huang, 1965 pp. 613–614 figs. 22–28.

Tegonotus ulmi: Newkirk & Keifer, 1971 pp. 7–8 .

Shevtchenkella ulmi: Bagdasarian, 1978 p. 938 ; Amrine & Stasny, 1994 p. 287 ; Ripka & de

Lillo, 1997 p. 151; Xue et al., 2013 pp. 30–31 figs. 18-19; Lotfollahi et al., 2014 pp. 53–54

fig. 2; Denizhan et al., 2015 pp. 39–40.

( Figs. 10 , 11 , Table 2)

Female (n=2) — Body fusiform, 161 (147-174), 69 (64-74) wide.

Gnathosoma 16 (16-16), projecting downwards; chelicerae 15 (10-19).

Prodorsal shield semicircular in dorsal view, 52 (51-53) (including frontal lobe), 70 (66-74) wide; frontal lobe 8 (7-10), obtuse triangular with a blunt tip. Prodorsal shield almost smooth, with a low bulging between faint admedian lines curving outwards; scapular tubercles 40 (40-40) apart on rear shield margin; scaplar setae sc 6 (5-7), divergent to rear.

Leg I 28 (27-29), femur 8 (8-9), femoral setae bv 7 (5–8) on anterior 2/5 from the base of femur; genu 5 (5-5), genual setae l ″ 16 (10–21); tibia 4 (4-4), paraxial tibial setae l ′ 4 (3–4) on anterior 1/3 from the base of tibia; tarsus 6 (6-7), tarsal solenidion ω 5 (4-6), slightly curved with knob apically, tarsal empodium em 6 (6-6), simple, 4–rayed.

Leg II 24 (24-24), femur 7 (7-7), femoral setae bv 6 (5–7) on anterior 1/3 from the base of femur; genu 5 (4-5), genual setae l ″ 5 (4–5); tibia 4 (4-4); tarsus 5 (5-5), tarsal solenidion ω 6 (6-6), curved with knob apically, tarsal empodium em 6 (6-6), simple, 4–rayed.

Coxisternal plates smooth; prosternal apodeme entire, distinct. Anterior setae on coxisternum I, 1b 7 (6-7), 13 (13-14) apart, ahead of line through proximal setae 1a on coxisternum I;

1a 9 (6-12), 13 (10-15) apart, a little ahead of line through proximal setae 2a on coxisternum II, proximal setae 2a 23 (16-31), 30 (25-35) apart.

External genitalia 12 (12-12), 23 (22-24) wide; coverflap with 8 longitudinal striae; setae

3a 12 (11-12), 17 apart. Coxigenital region with 13 semiannuli, smooth.

Opisthosoma with 17 dorsal annuli projecting laterally and a central longitudinal ridge, 55–64 ventral annuli. Dorsal annuli smooth, projecting laterally; ventral annuli microtuberclate. Opisthosomal setae c2 13 (13-13), 55 (51-59) apart on 10–17th annulus; d 22 (18-26), 32

(32-33) apart on 20–27th annulus; e 8 (6-9), 16 (15-16) apart on 34–41st annulus; f 10 (8-12),

15 (15-16) apart on 4–7th annulus from rear; h1 3 (3-4), 6 (6-7) apart and h2 38 (32-44), 9 (9-9)

apart.

Male — Not found.

Specimens examined — 2 females on 2 microscopic slides of inventory nos. NHMW29907/1-

3 from vial no. 477 in Box TU from the Nalepa mite collection deposited in the NHMW.

Host plant — Ulmus campestris L.

Other host plants — Ulmus procera Salisb. (= U. minor Mill. ) ( Xue et al., 2009 ; Lotfollahi et al., 2014), Ulmus minor Mill. ( Xue et al., 2009 ; Xue et al., 2013 ; Lotfollahi et al., 2014), Ulmus scabra Mill. (= U. rubra Muhl. ) ( Ripka & de Lillo, 1997), Ulmus davidiana var. japonica (Rehd.) Nakai ( Huang, 1965) , Ulmus densa Litv. ( Xue et al., 2013), Ulmus glabra Huds. ( Xue et al., 2013 ; Denizhan & Çobanoglu, 2010), Ulmus laevis Pall. ( Xue et al., 2013) ( Ulmaceae ).

Type locality — Nógrádveroee, Hungary. (Nalepa Collection Locality. Unknown).

Figures

Figure 10 Drawing of Shevtchenkella ulmi(Farkas, 1960) (female). A – dorsal view of body; B – ventral view of body; C – empodium; D – internal genitalia of female.

Figure 11 Phase-contrast light microscope images of Shevtchenkella ulmi. A – dorsal view of body; B – dorsal view of prodorsal shield; C – coxigenital region of female.