Acrotritia ardua ( C. L. Koch, 1841 )

Liu, Dong & Chen, Jun, 2015, Acrotritia species (Acari: Oribatida: Euphthiracaridae) from China with description of a new species, Zootaxa 3937 (1), pp. 127-146 : 132

Acrotritia ardua ( C. L. Koch, 1841)

( Figs. 2 A–H)

Measurements. Prodorsum: length 255–280, width 170–200, height 105–115, setae: ss 55–100, ro 50–55, in 115–130, le 70–75, ex 14–15, mutual distance: in–in 105, le–le 55, ro–ro 45; notogaster: length 510–590, width 330–395, height 360–420; setae: c 1 67.5–75, c 2 50–65, c 3 55–60, c p 50–75, d 1 55–60, d 2 45–50, e 1 64 –65, e 2 64 –65, h 1 75–80, h 2 50–60, h 3 45–60, ps 1 75–80, ps 2 55–60, ps 3 55–65, mutual distance: c 1– d 1 135–140, d 1– e 1 150–182.5, e 1– h 1 130–135, h 1– ps 1 100–120; genito-aggenital plate 175×85, ano-adanal plate 245×60.

Colour yellowish to brown; prodorsum with one pair of long and strong lateral carinae; sensilla with swollen head covered with small spines; prodorsal setae robust, rigid and densely barbed in distal half, except exobothridial setae; notogastral setae fairly short, similar in shape to lamellar setae; vestigial setae f 1 situated anterior to setae h 1; 9 pairs of minute genital setae present, including 1 pair of setae inserted on progenital area; 2 pairs of aggenital setae located longitudinally; tarsi of legs I bidactylous, tarsi II–IV heterotridactylous.

Material examined. China: Beijing: 1 adult (in alcohol, W-97-16), Xiaolongmen, from litter, 6–7 Oct. 1997, leg. Hui-Fu Wang and Jun Chen; 19 adults (in alcohol, W-87-4), Badaling, from litter and leaves, 24 Sep. 1987, leg. Xiao-Mei Zhang and Cen-Xuan Pan; 1 adult (in alcohol, Jing-072), Badachu, from litter, 24 Nov. 1984, leg. Hui-Fu Wang; 1 adult (in alcohol, Jing-126), Badachu, from leaves, 19 Sep. 1985, leg. Hui-Fu Wang; 19 adults (in alcohol, CJ-02-3), Baiwangshan, from litter under trees, 31 Mar. 2002, leg. Jun Chen; 3 adults (in alcohol, CJ-07-27), Baiwangshan, from rotten wood, 21 Jul. 2007, leg. Jun Chen and Dong Liu; 1 adult (in alcohol, CJ-07-28), from litter under pine and shrub, other data same as CJ-07-27; 1 adult (in alcohol, Yao-35), Beijing Medical University, from litter, 10 Sep. 1981, leg. Wen-Bing Yao; 1 adult (in alcohol, Yao-36), Beijing Medical University, from litter, 10 Sep. 1981, leg. Wen-Bing Yao; 3 adults (in alcohol, W-88-39), Changping, from weeds near pond, 10 Sep. 1981, leg. Hui-Fu Wang, Xue-Zhong Zhang and Cen-Xuan Pan; 1 adult (in alcohol, W-88-43), from litter under weeds, other data same as W-88-39; 6 adults (in alcohol, W-88-45), from leaves, other data same as W-88-39; 1 adult (in alcohol, CJ-02-80), Changping, Nankou, from litter under shrub, 19 Oct. 2002, leg. Jun Chen; 1 adult (in alcohol, CJ-02-81), Changping, Nankou, Pusashan, from litter under broad-leaved forest, 19 Oct. 2002, leg. Jun Chen; 1 adult (in alcohol, CJ-02-83), from litter in tree hole, other data same as CJ-02-81; 1 adult (in alcohol, CJ-02-85), from litter under broad-leaved forest, other data same as CJ-02-81; 3 adults (in alcohol, W-93-42), from litter, 1985-1987; 6 adults (in alcohol, CJ-07-15), Fangshan, Xiayunling, Simatai Village, Baicaopan, 880 m a.s.l., from litter under shrub, 5 Jul. 2007, leg. Jun Chen; 1 adult (in alcohol, CJ-07-17), 860 m a.s.l., from moss on stone, other data same as CJ-07-15; 1 adult (in alcohol, CJ-07-18), 850 m a.s.l., from litter under Sophora japonica , other data same as CJ-07-15; 1 adult (in alcohol, CJ-07-18), 2070 m a.s.l., from litter under rotten wood, other data same as CJ-07-15; 8 adults (in alcohol, W-89-133), Fangshan, Yunshuidong, from litter under cypress, 30 Aug. 1989, leg. Hui-Fu Wang and Xiao-Li Chen; 1 adult (in alcohol, W-89-134), from litter, other data same as W-89-133; 1 adult (in alcohol, W-89-141), from leaves, other data same as W-89-133; 6 adults (in alcohol, W-89-144), same data as W-89-141; 1 adult (in alcohol, W-89-145), same data as W-89-141; 1 adult (in alcohol, L-0162), from tree hole of cypress, other data same as W-89-133; 4 adults (in alcohol, CJ-07-24), Huairou, Qinglongxia, Yuhuangtaishan, the mountainside, from litter under jujube, 18 Jul. 2007, leg. Yan Deng; 1 adult (in alcohol, CJ-07-26), Huairou, Qinglongshan, Yuhuangtaishan, the summit, from litter under oak, 18 Jul. 2007, leg. Yan Deng; 1 adult (in alcohol, CJ-02-36), Huairou, School of Management, UCAS, from litter under cypress, 25 May 2002, leg. Jun Chen; 1 adult (in alcohol, CJ-07-25), Huairou, Hongluosi, from litter under pine tree, 19 Jul. 2007, leg. Yan Deng; 1 adult (in alcohol, CJ-02-39), Huairou, Labagoumen, Wulongtan, from litter under broad-leaved tree, 20 Jun. 2002, leg. Jun Chen; 3 adults (in alcohol, CJ-02-41), from soil under weed, other data same as CJ-02-39; 1 adult (in alcohol, W- 90-15), Beijing Jiaomen Wood Factory, from old sawdust, 26 May 1990, leg. Hui-Fu Wang and Yun-Qi Cui; 1 adult (in alcohol, CJ-05-6), Miyun, Shicheng, Jiudaowan, Daxiagu, Xiangshuishi, from litter under chestnut tree, 13 May 2005, leg. Jun Chen; 3 adults (in alcohol, CJ-05-9), Miyun, Shicheng, Jiudaowan, Daxiagu, Guchangcheng, from litter under oak, 14 May 2005, leg. Jun Chen; 1 adult (in alcohol, L-0165), Sanpu, from soil, Oct. 1976; 1 adult (in alcohol, L-0015), Sanpu, from soil under grass, 27 Jul. 1995; 1 adult (in alcohol, L-0017), from litter under poplar, other data same as L-0015; 1 adult (in alcohol, CJ-02-7), Sanpu, from litter under broadleaved forest, 27 Apr. 2002, leg. Jun Chen; 1 adult (in alcohol, CJ-02-8), from litter under coniferous forest, other data same as CJ-02-7; 1 adult (in alcohol, CJ-02-10), from litter, other data same as CJ-02-7; 4 adults (in alcohol, CJ-02-11), from litter, other data same as CJ-02-7; 1 adult (in alcohol, L-0168), Wufeng, from soil under shrub, 30 Apr. 1996; 1 adult (in alcohol, Yao-31), Xishan, from litter, 1 Sep. 1981, leg. Wen-Bing Yao; 9 adults (in alcohol, Yao-32), same data as Yao-31; 1 adult (in alcohol, W-94-35), Xiangshan, 100 m a.s.l., from litter, 18 Jun. 1994, leg. Guo-Xiao Chen; 3 adults (in alcohol, L-0170), same data as W-94-35; 6 adults (in alcohol, LD-07-144), Xiangshan, from litter under pine tree, 20 Oct. 2007, leg. Dong Liu; 1 adult (in alcohol, L-0184), Xiaolongmen, from litter under birch, 27 Apr. 1993; 1 adult (in alcohol, L-0171), Xiaolongmen, from litter under Larix sp., 25 May 1993; 1 adult (in alcohol, W-90-47), Xiaolongmen Forestry Station, from leaves under walnut tree, 16 Aug. 1990, leg. Yun- Qi Cui; 1 adult (in alcohol, W-90-105), Xiaolongmen, from litter under Larix sp., 24 Aug. 1990, leg. Yin-Heng Han; 10 adults (in alcohol, W-90-107), same data as W-90-105; 1 adult (in alcohol, W-91-9), Xiaolongmen, from litter, 23 Aug. 1991, leg. Pei-Yu Yu; 1 adult (in alcohol, W-92-23), Xiaolongmen, Caolengyu, from litter under shrub, 22 Jul. 1992, leg. Hui-Fu Wang; 1 adult (in alcohol, W-92-29), 24 Jul. 1992, other data same as W-92-23; 1 adult (in alcohol, W-97-17), from leaves, other data same as W-97-16; 1 adult (in alcohol, W-97-19), same data as W-97-17; 1 adult (in alcohol, W-97-20), same data as W-97-17; 1 adult (in alcohol, W-97-21), same data as W-97- 17; 1 adult (in alcohol, CJ-02-25), Xiaolongmen, Liyuanling, from litter under elm, 18-19 May 2002, leg. Jun Chen; 3 adults (in alcohol, CJ-02-29), from litter under birch, other data same as CJ-02-25; 1 adult (in alcohol, L- 0237), Xiaolongmen, 1200 m a.s.l., from litter, 24 Feb. 1989; 1 adult (in alcohol, W-90-111), Yanqing, from leaves, May 1990, leg. Hui-Fu Wang; 5 adults (in alcohol, W-90-112), from soil under weed, other data same as W-90-111; 1 adult (in alcohol, W-90-113), Yanqing, Guozhuang, from weed and twigs, other data same as W-90-111; 1 adult (in alcohol, W-90-114), from soil between stones near the road, other data same as W-90-111; 1 adult (in alcohol, W-90-115), same data as W-90-111; 1 adult (in alcohol, W-90-118), Yanqing, Hanjiachuan, from litter, other data same as W-90-111; 1 adult (in alcohol, W-88-53), Yuanmingyuan Imperial Garden, from leaves under poplar, 26 May 1988, leg. Hui-Fu Wang; 1 adult (in alcohol, L-0191), Yuanmingyuan Imperial Garden, from leaves under poplar, 15 Jul. 2001; 1 adult (in alcohol, L-0191), from leaves under willow, other data same as L-0191.

Figures

FIGURE 2. Acrotritia ardua (C. L. Koch, 1841): A, lateral view of body (legs removed); B, prodorsum, dorsal view; C – D, sensillum, dorsal view; E, ventral plate; F – I, trochanter, femur, genu and tibia: F, leg I; G, leg II; H, leg III; I, leg IV. Scale bars: A = 100 µm; B – I = 50 µm.