Euphthiracarus cribrarius ( Berlese, 1904 )

Liu, Dong, Wu, Donghui & Chen, Jun, 2011, Species of Euphthiracarus (Acari: Oribatida: Euphthiracaridae) from China, Zootaxa 2752, pp. 45-61 : 57

Euphthiracarus cribrarius ( Berlese, 1904)

( Figs. 26–29 )

Phthiracarus cribrarius Berlese, 1904: 23 ; Bernini, 1969: 391.

Euphthiracarus cribrarius: Grandjean, 1967: 250 ; Niedbała, 1993: 45; 2001a: 299; 2008: 120. Euphthiracarus (Euphthiracarus) cribarius: Niedbała, 2000: 139 . (misspelling)

Material examined. Five adults (in alcohol, T0160), China: Shaanxi Province, Foping County (33°31'28"N, 107°59'19"E), south slope of Qinling Mt., Daoliushui, from litter under bamboo, 17 Nov., 1995, leg. Zhi-Gao Zeng. New record for China.

Measurements. Prodorsum: length 359–362, width 240–249, height 124–139, setae: ss 148, in 180, le 110, ro 100, ex 34, distance between setae: ro -ro 65, in -in 107, le -le 50, in -le 118, le -ro 70; notogaster: length 741–760, width 440–510, height 430–479; setae: c1 150, c2 140, c3 100, c p 100, d1 100, d2 90, e1 120, e2 100, h1 150, h2 125, h3 95, ps1 150, ps2 120, ps3 95; distance between setae: c1-d1 190, d1-e1 200, e1-h1 165, h1-ps1 115; ventral region: genitoaggenital plate 310×110, anoadanal plate 335×60.

Description. Surface of body punctate. Prodorsum with two parallel lateral carinae on each side, upper carina stronger; sensilli long and setiform, sparsely barbed in distal half; interlamellar and lamellar setae robust, erect, covered with small spines in distal half; rostral setae rough, semi-erect, thinner than lamellar setae, curved and flagellate at distal end; exobothridial setae short and fine; comparative length: in>ss> le> ro>ex. Notogaster with 14 pairs of setae, covered with small spines in distal half; vestigial setae f1 located anteriorly of setae h1. Genital plates with nine pairs of setae, g1-3 fine, located in progenital position, other setae thick and slightly long; two pairs of aggenital setae present, ag1 minute, ag2 thick and more than four times as long as ag1; three pairs of anal and three pairs of adanal setae present, setae an1 and an2 smooth and flagellate at distal end, setae an3 and adanal setae shorter, robust and covered with small spines in distal half; lyrifissures iad situated between setae an3 and ad3. Setae h of mentum longer than distance between them; palps three-segmented with setal formula: 2-2-8(1). Chaetotaxy of legs (without tarsi): I: 1-2-4(2)-5(1); II: 1-3-3(1)-5(1), III: 2-2-2(1)-2(1), IV: 2-1-1(1)-2(1); all legs heterotridactylous.

Distribution. China (Shaanxi), Holarctic Region.

Figures

FIGURES 26 – 29. Euphthiracarus cribarius (Berlese, 1904): 26, lateral view of body (legs removed); 27, prodorsum, dorsal view; 28, right side of ventral plates; 29, mentum of infracapitulum. Scale bar = 100 μm.