Euphthiracarus minimus, Liu, Dong, Wu, Donghui & Chen, Jun, 2012

Liu, Dong, Wu, Donghui & Chen, Jun, 2012, Six new species of the genus Euphthiracarus (Acari: Oribatida: Euphthiracaridae) from China, Zootaxa 3481, pp. 47-59: 51

publication ID

http://doi.org/ 10.5281/zenodo.211663

publication LSID

lsid:zoobank.org:pub:8D913C23-AF71-4D14-B346-61A2D7F7029A

persistent identifier

http://treatment.plazi.org/id/5C3EE522-FFA5-605F-FF79-7770FEBB0B8A

treatment provided by

Plazi

scientific name

Euphthiracarus minimus
status

sp. nov.

Euphthiracarus minimus   sp. nov.

( Figs. 7–10 View FIGURES 7 – 10 )

Material examined: Holotype: adult (in alcohol, W- 90 - 79), China: Fujian Province, Jiangle County, Longqishan Mt. (26 ° 16 ' 28.27 "N, 117 ° 38 ' 40.70 "E), Xianrentang, from litter under mixed forest, 1300 m a.s.l., 13 Sep., 1990, leg. Hui-Fu Wang.

Etymology. The new specific name “ minimus   ” is from Latin and refers to the minute aggenital setae.

Measurements: Holotype: Prodorsum: length 260, width 185, height 112, setae: ss 83, ro 40, in 85, le 50, ex 13, distance between setae: ro –ro 30, in –in 85, le –le 50, in –le 90, le –ro 70; notogaster: length 485, width 320, height 320; setae: c 1 60, c 2 60, c 3 50, c p 46, d 1 50, d 2 45, e 1 55, e 2 50, h 1 60, h 2 55, h 3 52, ps 1 50, ps 2 55, ps 3 55; distance between setae: c 1 –d 1 120, d 1 –e 1 110, e 1 –h 1 95, h 1 –ps 1 85; ventral region: genitoaggenital plate 205 × 85, anoadanal plate 235 × 75.

Colour yellowish to tan. Surface of body covered with dense and small foveolae, except notogaster with distinct and large foveolae.

Anterior region of prodorsum humped; one pair of wavelike lateral carinae present; sensilla short with narrow pedicel and dilated head, not pointed distally and covered with robust spines; interlamellar and lamellar setae short, robust and erect, covered with spines in distal half; rostral setae smooth, semi-erect, spiniform; comparative length: in>ss> le> ro>ex.

Notogaster setae short, similar in shape to interlamellar setae, barbed in distal half; setae c 1–3 remote from anterior border, setae c 1 slightly more so than setae c 2 and c 3; vestigial setae f 1 not observed; arrangement of opisthosomal glands and lyrifissures typical for genus.

Nine pairs of genital and two pairs of aggenital setae present, g 1–3 short and fine, located in progenital position, other setae and aggenital setae slightly longer, spiniform, equally long and thick; setae an 1 and an 2 smooth and flagellate at distal end, setae an 3 and adanal setae shorter, robust and covered with small spines in distal half; lyrifissures iad situated between setae an 3 and ad 3.

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. Known only from the type locality.

Remark. This new species is easily distinguished from other species of this genus by the combination of following characters: surface of notogaster with distinct and large foveolae; anterior region of prodorsum humped; one pair of wavelike lateral carinae present; sensilla with dilated head covered with robust spines; rostral setae spiniform.