Tetra pruniana, Li, Hao-Sen, Xue, Xiao-Feng & Hong, Xiao-Yue, 2012

Li, Hao-Sen, Xue, Xiao-Feng & Hong, Xiao-Yue, 2012, Eriophyoid mites from Qinghai Province, northwestern China with descriptions of nine new species (Acari, Eriophyoidea), ZooKeys 196, pp. 47-107 : 58-61

Tetra pruniana sp. n. Figures 16-18

Description.

Female. (n = 9) Body fusiform, light yellow, 215 (210-225), 77 (75-78) wide. Gnathosoma 21 (21-23), projecting obliquely down, suboral plate present, pedipalp coxal seta (ep) 4 (4-5), dorsal pedipalp genual seta (d) 7 (7-8), cheliceral stylets 16 (16-18). Prodorsal shield 54 (54-55), 75 (75-78) wide, subtriangular; frontal lobe 12 (11-12); median and submedian lines absent, admedian lines connected by two weak transverse lines. Scapular tubercles near rear shield margin, 3 (3-4), 34 (32-34) apart, scapular setae (sc) 14 (13-15), projecting posteriorly. Rear shield with wave-like margin. Coxigenital region with 9 annuli. Coxisternal plates with short lines, anterolateral setae on coxisternum I (1b) 11 (10-13), 14 (13-14) apart, proximal setae on coxisternum I (1a) 20 (20-25), 10 (10-11) apart, proximal setae on coxisternum II (2a) 50 (45-50), 28 (28-29) apart, tubercles 1b and 1a 7 (7-8) apart, tubercles 1a and 2a 10 (10-12) apart. Prosternal apodeme combined, 8 (6-8). Leg I 34 (32-35), femur 12 (12-13), basiventral femoral seta (bv) 12 (12-14); genu 7 (6-7), antaxial genual seta (l") 20 (19-20); tibia 10 (9-10), paraxial tibial seta ( l’) 6 (5-6), located at 1/3 from dorsal base; tarsus 7 (7-8), seta ft’ 19 (19-21), seta ft" 25 (24-25), seta u’ 5 (4-5); tarsal empodium (em) 7 (6-7), simple, 4-rayed, tarsal solenidion (ω) 6 (6-7), knobbed. Leg II 27 (27-31), femur 10 (10-11), basiventral femoral seta (bv) 12 (12-13); genu 5 (5-6), antaxial genual seta (l") 8 (7-8); tibia 6 (6-7); tarsus 6 (6-7), seta ft’ 6 (6-7), seta ft" 25 (23-25), seta u’ 5 (5-6); tarsal empodium (em) 6 (5-6), simple, 4-rayed, tarsal solenidion (ω) 6 (6-7), knobbed. Opisthosoma dorsally with 25 (24-25) annuli, with weak filamentous microtubercles, ventrally with 53 (53-59) annuli, with round microtubercles. Setae c2 25 (24-26) on ventral annulus 9 (9-11), 58 (58-59) apart; setae d 60 (57-65) on ventral annulus 22 (22-24), 33 (32-33) apart; setae e 18 (17-20) on ventral annulus 37 (37-40), 18 (17-18) apart; setae f 29 (29-33) on ventral annulus 50 (50-56), 25 (22-25) apart. Setae h1 3 (2-3), h2 85 (80-95). Female genitalia 15 (15-17), 25 (24-25) wide, coverflap with 10 longitudinal ridges, setae 3a 18 (16-19), 17 (17-18) apart.

Male. (n = 6) Body fusiform, light yellow, 170-186, 73-74 wide. Gnathosoma 16-17, projecting obliquely downwards, suboral plate present, pedipalp coxal seta (ep) 4-5, dorsal pedipalp genual seta (d) 7-8, cheliceral stylets 14-16. Prodorsal shield has the same design as female, 47-50, 72-73 wide, subtriangular; frontal lobe 10-12. Scapular tubercles on rear shield margin, 3-4, 30-33 apart, scapular setae (sc) 7-9, projecting posteriorly. Coxigenital region with 9 smooth annuli. Coxisternal plates with short lines, anterolateral setae on coxisternum I (1b) 10-11, 13-14 apart, proximal setae on coxisternum I (1a) 21-22, 10-11 apart, proximal setae on coxisternum II (2a) 45-48, 28-30 apart, tubercles 1b and 1a 7-8 apart, tubercles 1a and 2a 9-10 apart. Prosternal apodeme combined, 7-8. Leg I 34-35, femur 10-12, basiventral femoral seta (bv) 9-10; genu 6-7, antaxial genual seta (l") 19-22; tibia 9-10, paraxial tibial seta ( l’) 6-7, located at 1/3 from dorsal base; tarsus 7-8, seta ft’ 15-17, seta ft" 21-24, seta u’ 4-5; tarsal empodium (em) 7-8, simple, 4-rayed, tarsal solenidion (ω) 6-7, knobbed. Leg II 28-29, femur 9-10, basiventral femoral seta (bv) 10-11; genu 5-6, antaxial genual seta (l") 6-7; tibia 7-8; tarsus 6-7, seta ft’ 6-7, seta ft" 22-25, seta u’ 5-6; tarsal empodium (em) 6-7, simple, 4-rayed, tarsal solenidion (ω) 7-8, knobbed. Opisthosoma dorsally with 26-27 annuli, with weak filamentous microtubercles, ventrally with 53-54 annuli, with round microtubercles. Setae c2 18-20 on ventral annulus 10-11, 55-65 apart; setae d 32-35 on ventral annulus 20-22, 30-45 apart; setae e 18-20 on ventral annulus 33-35, 18-30 apart; setae f 25-28 on ventral annulus 50-51, 20-22 apart. Setae h1 2-3, h2 80-90. Male genitalia 13-14, 23-28 wide, setae 3a 17-18, 20-21 apart.

Type material.

Holotype, female (slide number NJAUEri808, marked Holotype), from Prunus tomentosa Thunb. ( Rosaceae ), Xining City, Qinghai Province, P. R. China, 36°38'18"N, 101°45'27"E, elevation 2241m, 21 July 2007, coll. Xiao-Feng Xue. Paratypes, 2 females and 4 males (slide number NJAUEri808), with the same data as holotype.

Relation to host.

Vagrant on leaf lower surface. No damage to the host was observed.

Etymology.

The specific designation pruniana is from the generic name of host plant, Prunus ; feminine in gender.

Differential diagnosis.

This species is similar to Tetra pinnatifidae Xue, Song & Hong, 2006a, but can be differentiated from the latter by median and submedian lines absent (median and submedian lines present in Tetra pinnatifidae ), admedian lines connected by two weak transverse lines (admedian lines separated in Tetra pinnatifidae ).