Acrotritia koreensis ( Mahunka, 1997 )

Liu, Dong & Chen, Jun, 2015, Acrotritia species (Acari: Oribatida: Euphthiracaridae) from China with description of a new species, Zootaxa 3937 (1), pp. 127-146 : 138-140

Acrotritia koreensis ( Mahunka, 1997)

( Figs. 5 A–H)

Measurements. Prodorsum: length 280–300, width 205–255, height 110–130, setae: ss 90, ro 45–50, in 100–115, le 65–75, ex 13, mutual distance: in–in 100–105, le–le 55–60, ro–ro 40–45; notogaster: length 530–640, width 400–435, height 440–475; c 1 75, c 2 65–75, c 3 60–65, c p 65–75, d 1 60–65, d 2 55–60, e 1 60 –70, e 2 60 –70, h 1 60–65, h 2 60, h 3 60–75, ps 1 70–75, ps 2 60–65, ps 3 60–65, mutual distance: c 1– d 1 160, d 1– e 1 195–210, e 1– h 1 130, h 1– ps 1 130–145; genito-aggenital plate 210×80, ano-adanal plate 280×70.

Colour light brown; surface of prodorsum with irregular sculpture, notogaster covered with polygonal reticulation; prodorsum abruptly humped near insertion level of rostral setae in lateral view; one pair of long and strong lateral carinae present, with short and downward forks at the level of lamellar setae; sensilla with swollen and distinct head, covered with small spines distally; prodorsal setae robust, rigid and barbed in distal half, except exobothridial setae; notogastral setae fairly short, similar in shape as lamellar setae; vestigial setae f 1 not observed; 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-88-33), Changping, from weed near river, 19-21 Oct. 1988, leg. Hui-Fu Wang, Xue-Zhong Zhang and Cen-Xuan Pan; 1 adult (in alcohol, W-88-42), from sawdust on rotten wood, other data same as W-88-33; 1 adult (in alcohol, W-88-43), from litter under weed, other data same as W-88-33; 1 adult (in alcohol, W-88-45), from leaves, other data same as W-88-33; 1 adult (in alcohol, CJ-02- 81), Changping, Nankou, Pusashan, from litter under broad-leaved trees, 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 trees, other data same as CJ-02-81; 1 adult (in alcohol, W-89-141), Fangshan, Yunshuidong, from leaves, 30 Aug. 1989, leg. Hui-Fu Wang and Xiao-Li Chen; 2 adults (in alcohol, W-89-142), same data as W- 89-141; 1 adult (in alcohol, CJ-07-17), Fangshan, Xiayunling, Simatai, Baicaopan, 860 m a.s.l., from moss on stone, 5 Jul. 2007, leg. Jun Chen; 1 adult (in alcohol, CJ-07-18), 850 m a.s.l., from litter under Sophora japonica , other data same as CJ-07-17; 1 adult (in alcohol, CJ-02-38), Huairou, Labagoumen, Wulongtan, from litter under Quercus sp., 20 Jun. 2002, leg. Jun Chen; 2 adults (in alcohol, CJ-02-39), from litter under broad-leaved trees, other data same as CJ-02-38; 1 adult (in alcohol, CJ-05-2), Miyun, Shicheng, Jiudaowan, Daxiagu, from rotten wood of Trema angustifolia , 13 May 2005, leg. Jun Chen; 1 adult (in alcohol, CJ-05-3), from litter under shrub, other data same as CJ-05-2; 1 adult (in alcohol, CJ-05-5), from litter under shrub (wet), other data same as CJ-05-2; 1 adult (in alcohol, L-0015), Sanpu, from litter under weed, 27 Jul. 1995; 1 adult (in alcohol, CJ-02-7), Sanpu, from litter under broad-leaved trees, 27 Apr. 2002, leg. Jun Chen; 4 adults (in alcohol, W-94-15), Xiangshan, from litter, Apr. 1994, leg. Guo-Xiao Chen; 1 adult (in alcohol, L-0170), Xiangshan, 100 m a.s.l., from litter, 18 Jun. 1994, leg.

Guo-Xiao Chen; 1 adult (in alcohol, L-0237), Mentougou, Xiaolongmen, 1200 m a.s.l., from litter, 24 Feb. 1989; 1 adult (in alcohol, W-90-105), Mentougou, Xiaolongmen, from litter under Larix gmelinii , 24 Aug. 1990, leg. Yin- Heng Han; 1 adult (in alcohol, W-97-16), Xiaolongmen, from litter, 6–7 Oct. 1997, leg. Hui-Fu Wang and Jun Chen; 1 adult (in alcohol, W-97-17), from leaves, other data same as W-97-16; 1 adult (in alcohol, W-97-18), same data as W-97-17; 1 adult (in alcohol, W-97-20), same data as W-97-17; 1 adult (in alcohol, CJ-02-25), Xiaolongmen, Liyuanling, from litter under Ulmaceae sp., 18–19 May 2002, leg. Jun Chen; 12 adults (in alcohol, W-90-111), Yanqing, from leaves, May 1990, leg. Hui-Fu Wang; 1 adult (in alcohol, W-90-113), Yanqing, Guozhuang, from weed and twig, May 1990, leg. Hui-Fu Wang; 1 adult (in alcohol, W-90-115), same data as W- 90-111.

Figures

FIGURE 5. Acrotritia koreensis (Mahunka, 1997): A, lateral view of body (legs removed); B, prodorsum, dorsal view; C, sensillum, dorsal view; D, ventral plate; E, sculpture of prodorsum; F, sculpture of notogaster; G – J, trochanter, femur, genu and tibia: G, leg I; H, leg II; I, leg III; J, leg IV. Scale bars: A = 100 µm; B – J = 50 µm.