Tetra louguantais, Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2006

Tetra louguantais sp. nov.

( Fig. 1 View FIGURE 1 )

Description

FEMALE: (n = 4) Body fusiform, 210 (191–220) long, 69 (65–71) wide, 63 (61–64) thick; light yellow. Gnathosoma 30 (29–32), projecting obliquely down. Prodorsal shield 46 (45–47) long, 50 (48–51) wide; subtriangular; frontal lobe broad; smooth. Scapular tubercles on rear margin, 35 (34–36) apart, scapular setae ( sc) 8 (8–9) projecting posterior. Coxal area with short lines; anterolateral setae on coxisternum ( 1b) 11 (10–12), proximal setae on coxisternum ( 1a) 15 (14–17), proximal setae on coxisternum ( 2a) 28 (25–31). Prosternal apodeme absent. Legs with usual series of setae. Legs 29 (27–30), femur 7 (7–8), basiventral femoral setae ( bv) 11 (10–13); genu 5 (4–5), antaxial genual setae ( l'') 18 (16–20); tibia 8 (7–8), paraxial tibial setae ( l') 5 (5–6), setae located 1/3 from dorsal base; tarsus 5 (5–6); tarsal empodium simple, 4­rayed, tarsal solenidion knobbed. Legs 25 (23–26), femur 7 (6–7), basiventral femoral setae ( bv) 10 (10–11); genu 4 (4–5), antaxial genual setae ( l'') 6 (5–7); tibia 6 (5–6); tarsus 5 (4–5); tarsal empodium simple, 4­ rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 34 (32–35) annuli, smooth, ventrally with 58 (56–62) microtuberculate annuli. Setae c2 18 (16–19) on ventral annulus 11 (10–11); setae d 38 (35–40) on ventral annulus 23 (21–24); setae e 19 (18–20) on ventral annulus 40 (39–41), setae f 23 (22–25) on 6th ventral annulus from rear. Setae h1 3 (2–3). Female genitalia 14 (14–15) long, 23 (21–24) wide, coverflap with 12 longitudinal ridges, proximal setae on coxisternum ( 3a) 20 (18–22).

MALE: (n = 1) 156 long, 53 wide; genitalia 15 wide, proximal setae on coxisternum III ( 3a) 15.

Types

Holotype, female, China : Shaanxi Province, Zhouzhi County, Louguantai, 34°03.54’N, 108°19.22’E. August 31, 2004, from Pistacia chinensis Bunge (Anacardiaceae) , coll. Xue, Xiao­Feng & Song, Zi­Wei. Paratypes, 3 females and 1 male, with the same data as holotype.

Relation to host

Mites are vagrant on leaf surface, causing no apparent damage.

Remarks

This species is similar to Tetra hippocastani Domes, 2003 , but can be differentiated by prodorsal shield smooth (admedian and submedian lines present in T. hippocastani ), coxal area with short lines (smooth in T. hippocastani ) and prosternal apodeme absent (prosternal apodeme present in T. hippocastani ).