Proiectus xiningensis, 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 : 51-52

Proiectus xiningensis sp. n. Figures 4-7

Description.

Female. (n = 5) Body fusiform, light yellow, 248 (223-308), 100 (100-110) wide, 90 (90-91) thick. Gnathosoma 33 (33-34), projecting obliquely down, suboral plate present, pedipalp coxal seta (ep) 3 (3-5), dorsal pedipalp genual seta (d) 15 (11-15), cheliceral stylets 33 (33-34). Prodorsal shield 73 (65-73), 100 (100-110) wide, subtriangular, with a large projection on each lateral margin 7 (6-7); frontal lobe broad 24 (22-24); median, admedian and submedian lines obscure, median and admedian lines connected at base. Scapular tubercles ahead of rear shield margin, 2 (2-3), 30 (27-30) apart, scapular setae (sc) 8 (6-8), projecting centrad. Coxigenital region with 17 (14-17) annuli, with round microtubercles, with deep seam under coxisternal plate II. Coxisternal plates with short lines, anterolateral setae on coxisternum I (1b) 10 (10-11), 18 (18-19) apart, proximal setae on coxisternum I (1a) 22 (20-22), 13 (12-13) apart, proximal setae on coxisternum II (2a) 52 (50-52), 32 (32-33) apart, tubercles 1b and 1a 11 (10-11) apart, tubercles 1a and 2a 10 (10-11) apart. Prosternal apodeme separated, 4 (4-5). Leg I 43 (40-45), femur 9 (8-10), basiventral femoral seta (bv) 14 (12-14); genu 9 (8-10), antaxial genual seta (l") 28 (28-34); tibia 15 (13-15), paraxial tibial seta ( l’) 5 (5-6), located at 1/2 from dorsal base; tarsus 10 (9-10), seta ft’ 17 (17-18), seta ft" 30 (30-32), seta u’ 5 (5-6); tarsal empodium (em) 8 (7-8), simple, 5-rayed, tarsal solenidion (ω) 10 (9-10), knobbed. Leg II 40 (40-41), femur 13 (13-16), basiventral femoral seta (bv) 13 (10-13); genu 6 (6-8), antaxial genual seta (l") 8 (7-8); tibia 10 (10-12); tarsus 8 (8-9), seta ft’ 9 (8-9), seta ft" 27 (27-28), seta u’ 5 (5-6); tarsal empodium (em) 8 (7-8), simple, 5-rayed, tarsal solenidion (ω) 10 (9-10), knobbed. Opisthosoma dorsally with 41 (39-41) annuli, with weak filamentous microtubercles, ventrally with 92 (92-100) annuli, with round microtubercles. Setae c2 21 (21-22) on ventral annulus 15 (15-20), 70 (70-73) apart; setae d 100 (80-100) on ventral annulus 34 (34-39), 37 (37-46) apart; setae e 55 (55-65) on ventral annulus 56 (56-61), 21 (21-22) apart; setae f 33 (30-33) on ventral annulus 84 (84-90), 28 (28-29) apart. Setae h1 7 (6-7), h2 65 (55-65). Female genitalia 28 (28-30), 33 (33-34) wide, coverflap with 19 longitudinal ridges, setae 3a 10 (10-12), 23 (21-22) apart.

Male. (n = 1) Body fusiform, light yellow, 250, 90 wide. Gnathosoma 34, projecting obliquely down, suboral plate present, pedipalp coxal seta (ep) 3, dorsal pedipalp genual seta (d) 11, cheliceral stylets 50. Prodorsal shield has the same design as female, 70, 90 wide, subtriangular; with a large projection on each lateral margin, 6; frontal lobe broad, 21. Scapular tubercles ahead of rear shield margin, 2, 23 apart, scapular setae (sc) 6, projecting centrad. Coxigenital region with 16 annuli, with round microtubercles, with deep seam under coxisternal plate II. Coxisternal plates with short lines, anterolateral setae on coxisternum I (1b) 10, 15 apart, proximal setae on coxisternum I (1a) 15, 12 apart, proximal setae on coxisternum II (2a) 52, 29 apart, tubercles 1b and 1a 10 apart, tubercles 1a and 2a 11 apart. Prosternal apodeme separated, 5. Leg I 40, femur 10, basiventral femoral seta (bv) 13; genu 8, antaxial genual seta (l") 31; tibia 13, paraxial tibial seta ( l’) 5, located at 1/2 from dorsal base; tarsus 8, seta ft’ 17, seta ft" 30, seta u’ 5; tarsal empodium (em) 7, simple, 5-rayed, tarsal solenidion (ω) 9, knobbed. Leg II 37, femur 15, basiventral femoral seta (bv) 12; genu 6, antaxial genual seta (l") 7; tibia 10; tarsus 8), seta ft’ 7, seta ft" 25, seta u’ 5; tarsal empodium (em) 7, simple, 5-rayed, tarsal solenidion (ω) 9, knobbed. Opisthosoma dorsally with 41 annuli, with weak filamentous microtubercles, ventrally with 94 annuli, with round microtubercles. Setae c2 21 on ventral annulus 18, 60 apart; setae d 80 on ventral annulus 36, 38 apart; setae e 60 on ventral annulus 58, 20 apart; setae f 27 on ventral annulus 88, 25 apart. Setae h1 6, h2 65. Male genitalia 25 wide, setae 3a 12, 22 apart.

Type material.

Holotype, female (slide number NJAUEri790, marked Holotype), from Pinus sp. ( Pinaceae ), 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, 4 females and 1 male (slide number NJAUEri790), with the same data as holotype.

Relation to host.

Vagrant on terminal part of the needles. No damage to the host was observed.

Etymology. The specific designation xiningensis is from the place name Xining City, where this new species was collected; feminine in gender.

Differential diagnosis.

This species is similar to Proiectus thunbergis Xue, Song, Amrine & Hong, 2007, but can be differentiated from the latter by median and admedian lines of prodorsal shield simple (median and admedian lines with granules in Proiectus thunbergis ), opisthosoma dorsally annuli with weak filamentous microtubercles (opisthosoma dorsally annuli with round microtubercles in Proiectus thunbergis ), tarsal empodium (em) 5-rayed (4-rayed in Proiectus thunbergis ).