Oribotritia angusta Mahunka, 1982

Liu, Dong, 2015, Review of Oribotritia (Acari, Oribatida, Oribotritiidae) with a world checklist and description of a new species from China, Zootaxa 4007 (2), pp. 217-241 : 221

Oribotritia angusta Mahunka, 1982

( Figs 2 A–H)

Measurements. Prodorsum: length 550–640, width 430–510, height 170–215, setae: ss 110, ro 75, in 45, le 115, ex 115, mutual distance: in–in 135, le–le 370, ro–ro 105, in–le 115, le–ro 275; notogaster: length 980–1380, width 790–990, height 750–920; c 1 170, c 2 160, c 3 100, c p 135, d 1 185, d 2 180, e 1 150, e 2 150, h 1 130, h 2 135, h 3 115, ps 1 160, ps 2 140, ps 3 135, mutual distance: c 1– d 1 250, d 1– e 1 365, e 1– h 1 370, h 1– ps 1 300; genito-aggenital plate 240×150– 330×160, ano-adanal plate 500×120–615×130.

Colour light brown to brown. Prodorsum with two pairs of lateral carinae, lower ones weaker and slightly shorter; sensilli rough and setiform, other prodorsal setae fine and smooth; interlamellar setae directed inward; comparative lengths: le = ex> ss>ro> in, in–in / ro–ro≈ 1.3. Notogastral setae similar in shape to lamellar setae. Setae h of mentum considerably longer than distance between them; setation of palps: 0-3-0-3-9(1); epimeral setal formula: 3-0-2-2. Eight pairs of minute genital setae present, including three pairs inserted on progenital area; two pairs of aggenital, three pairs of anal and three pairs of adanal setae present, all minute; lyrifissures iad placed at level of setae ad 3. Setal counts for leg segments: I: 1-4-5(2)-5(1)-21(3); II: 1-4-4(1)-5(1)-19(2), III: 3-2-3(1)-4(1)- 16, IV: 3-2-2(1)-3(1)-14; femora I without distal spines.

Material examined. ZMCAS: China: Beijing: 1 adult (in alcohol, W-93-42), from litter, 1985–1987, leg. Jun Chen; 1 adult (in alcohol, Jing-126), Badachu, from leaves, 19 Sep. 1985, leg. Hui-Fu Wang; 1 adult (in alcohol, LD-07-143), Xiangshan Park, from litter under shrub, 20 Oct. 2007, leg. Dong Liu; 1 adult (in alcohol), Sanpu, from soil, Oct. 1976; 1 adult (in alcohol, CJ-02-85), Changping, Nankou, Pusashan, from litter under broad-leaved tree, 19 Oct. 2002, leg. Jun Chen; 1 adult (in alcohol, W-97-18), Xiaolongmen, from leaves, 6–7 Oct. 1997, leg. Hui-Fu Wang and Jun Chen; 1 adult (in alcohol, CJ-05-3), Miyun, Shicheng, Jiudaowan, Daxiagu, from litter under shrub, 13 May 2005, leg. Jun Chen; 1 adult (in alcohol, CJ-07-18), Fangshan, Xiayunling, Simatai Village, Baicaopan, 850 m a.s.l., from litter under locust tree, 5 Jul. 2007, leg. Jun Chen. China: Hebei Province: 1 adult (in alcohol, W-87-7), Chengde Imperial Summer Resort, from leaves, 19 Oct. 1987, leg. Xiao-Mei Zhang and Cen- Xuan Pan; 1 adult (in alcohol, CJ-05-65), Wei County, Xiaowutai, Jinhekou, Xitai, 1330 m a.s.l., from litter under arbor, 20 Aug. 2005, leg. Jun Chen; 1 adult (in alcohol, CJ-05-78), Wei County, Xiaowutai, Jinhekou, Xitai, 1700 m a.s.l., from litter under conifer, 21 Aug. 2005, leg. Jun Chen. China: Inner Mongolia: 1 adult (in alcohol), Wumeng, Manhanshan Mt., from litter, 20 Jul. 1984, leg. Wen-Bing Yao.

Figures

FIGURE 2. Oribotritia angusta Mahunka, 1982: A, lateral view of body (legs removed); B, prodorsum, dorsal view; C, left side of ano-genital region; D, mentum of infracapitulum; E – G, trochanter, femur, genu and tibia: E, leg I; F, leg II; G, leg III; H, femur, genu and tibia of leg IV. Scale bars: A – C, E – H = 200 Μm; D = 100 Μm.