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《Acta Zootaxonomica Sinica》 1993-01
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A NEW SPECIES OF THE GENUS DYOBELBA FROM CHINA(ACARI: ORIBATIDA: DAMAEIDAE)

WANG HUI-FU(Institute of Zoology Academia Sinica, 100080) R. A. NORTON(State University of New York)  
Norton(1978) proposed the genus Dyobelba with Oribata carolinensis Banks as type species. Up to now this genus is only known in America. This paper deals with a new species from Mt. Changbai, China.Dyobelba biclavata sp. nov. (figs. 1—10)Mean ventral length of three specimens 632.7μm (599—666); mean notogastral width 412.9μm(399.6—432.9). Body colour is light brown, even yellowship compared with mostly damaeid mites, notogastral setae black. Integum nt microtuberculate, granular cerotegument covering all body. Except distal part of tarsi, cylindrical cerotegument covering all legs. Prodorsum Postbothridial enantiophysis Ba usually rounded or triangular; Bp and dorsosejugal enantiophysis (D) and propodolateral apophysis (P) absent, Sensillus (ss) smooth, tapering but not flagellate.Notogaster Spinae adnatae (sa) curved antero-mediad. Setae c_2, la and lm shorter, with few barbs on all setae, The distance between c_1 short, paralied each other, directed forward. Mutual distance of setae c_2 4 times as long as that of c_1. Setae P series thiner p_1=p_2p_3, curved lateroventrad.Venter Propodoventral enantiophyses Ta developed; Tp, and ventrosejugal enantiophyses (Ⅴ) absent. Parastigmatic enantiophyses (S) well developed, Sa triangular, with rounded tip; Sp rounded. Discidium (di) more sharply pointed than Sa. Epirneral setation 3-3-3-4(n=4). Anogenital region normal.Legs Leg Ⅳ very long, 1.7 times ventral body length. Setation (Ⅰ—Ⅳ, famulus included, number of solenidia in parentheses): trochanters 1-1-2-1; femora 7-6-5-5; genua 4(1)-4(1)-3(1)-3; tibiae 4(2)-5(1)-4(1)-3(1); tarsi 20(2)-17(2)-17-14. Tibiae Ⅰ, Ⅳ without d; tarsus Ⅰ with 3 eupathidium-p′, p″ and s. Tibiae Ⅱ, Ⅲ having setae d, coupled ψ.Holotype (C-9, in alcohol), June 25, 1980, from rotten wood. Paratypes 3(C-47, 49), Ⅵ—Ⅶ, 1979, from litter; 1(C-34), July 23, 1980, from rotten wood. All type specimens collected from mixed forest of conifer and broadleaf tree in Mt. Changbai (Jilin Provience). One paratype (C-47, slide) is in the collection of R. A. Norton others are deposited in the Institute of Zoology, Academia Sinica.Discussion There are two characters of this new species which are not known in other species of the genus Dyobelba. Usually epimeral setation 3-1-3-4, but it is 3-3-3-4 in this new species. Femora Ⅲ, Ⅳ of the species with 5 setae instead of 4 setae in the known species.The uniform presence of 3 pairs of setae on epimeres Ⅱ is an example of neotrichy, which is not common on the epimeres of damaeid mies. Such neotrichy was known in the genera Hungarobelba, Belba and Quatrobelba.
【Fund】: 国家自然科学基金资助课题
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【References】
Chinese Journal Full-text Database 1 Hits
1 XIE Li-xia et al(Key Laboratory for Plant Pest Management of Mountainous Region,Institute of Entomology,Guizhou University,Guiyang,Guizhou 550025);Research Progress in the Damaeidae(Acari: Oribatida: Damaeoidea) in Taxonomy[J];Journal of Anhui Agricultural Sciences;2008-15
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 LIN YUGUANG GUAN JIAZHEX WAX PENGPENG YAXG WEXCHUAN (Parasitology Research Laboratory, Xiamen University);STUDIES ON THE DEVELOPMENTAL CYCLE OF PARANOPLOCE. PHALA RYJIKOVISPASSKY, 1950 IN THE INTERMEDIATE HOST[J];Acta Zoologica Sinica;1982-03
2 CHEN PENG(Northeast Normal Univ., Changchun)WUM ZAIGEN (Bethune Medical Univ., Changchun)J. AOKI(Yakohama National University)M. SHIBA AND K. ISHIAWA(Matsuyama Shinonome Junior College);INVESTIGATION ON SOIL ACARID IN JINGYUETAN AREA CHANGCHUN[J];Acta Zoologica Sinica;1988-03
3 Wen Zaigen(Department of Biology);A NEW SUBGENUS AND SPECIES OF ACROTOCEPHEUS FROM SICHUAN, CHINA (ACARI: ORIBATIDA: OTOCEOHEIDAE)[J];;1993-01
4 Wen Zaigen(Dept.of Biology, The School of Basic Medical Sciences);Two new species of the genus Eremobelba from China[J];JOURNAL OF NORMAN BETHUNE UNIVERSITY OF MEDICAL SCIENCE;1996-05
5 Wen Zaigen (Dept.of Biology,School of Basic Medical Sciences);Two new species of Suctobelbid mites from China ( Acari:Oribatida:Suctobelbidae )[J];JOURNAL OF NORMAN BETHUNE UNIVERSITY OF MEDICAL SCIENCE;1997-02
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7 WANG HUI-FU GUI YUN-QI(Institute of Zoology, Acadcmia Stnica};NEW RECORDS OF ENARTHRONOTA FROM CHINA, WITH DESCRIPTION OF A NEW SPECIES OF LIOCHTHONIUS (ACARI: ORIBATIDA)[J];Acta Zootaxonomica Sinica;1992-03
8 WEN ZAI-GEN Department of Biology, Norman Bethune University of Medical Sciences Changchun 130021;TWO NEW ORIBATID MITES OF THE GENUS ALLOSUCTOBELBA FROM MT.HUANGSHAN,CHINA (ACARI:ORIBATIDA:SUCTOBELBIDAE)[J];Acta Zootaxonomica Sinica;1993-02
9 WEN ZAI-GEN Department of Biology,Norman Bethune University of Medical Sciences,ChangChun 130021;A NEW SPECIES OF OXYOPPIA FROM CHINA (ACARI:ORIBATIDA:OPPIIDAE)[J];Acta Zootaxonomica Sinica;1993-03
10 WANG HUI-FU;R.A. NORTON Institute of Zoology Academia Sinica Beijign, 100080 State University of New York;THREE NEW SPECIES OF EPIDAMAEUS FROM CHINA (ACARI:ORIBATIDA:DAMAEIDAE)[J];Acta Zootaxonomica Sinica;1993-03
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