Uropoda setata, Kontschán, Jenő & Starý, Josef, 2011

Kontschán, Jenő & Starý, Josef, 2011, Uropodina species from Vietnam (Acari: Mesostigmata), Zootaxa 2807, pp. 1-28: 17-18

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http://doi.org/ 10.5281/zenodo.202067

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scientific name

Uropoda setata

sp. nov.

Uropoda setata   sp. nov.

( Figs 42–48 View FIGURES 42 – 44 View FIGURES 45 – 48 )

Material examined. Holotype. Female ( HNHM), Vietnam, Tam Dao, submontane foggy forest, litter sample, altitude ca 1200 m, 16 October 1988, J. Starý coll. Paratype. One female ( ISB). Locality and date same as holotype. Description. Female. Length of idiosoma 850–960 µm, width 740–750 µm (n= 2). Shape oval, highly domed.

Dorsal idiosoma ( Fig. 42 View FIGURES 42 – 44 ). Marginal and dorsal shields not fused. Central region of dorsal shield elevated from the other parts of dorsum, but one deep, transverse furrow located at level of coxae IV ( Fig. 44 View FIGURES 42 – 44 ). Dorsal setae smooth and needle-like, margins of dorsal shield with ca 45–50 µm long setae, central region with shorter (ca 50 µm) and longer (140–210 µm) setae, the long setae located on anterior margin of deep transverse furrow. Submarginal shield reduced and covered by small oval pits. Setae on submarginal shields long, smooth ca 110–120 µm long, one pair of setae situated near posterior margins of submarginal shields, these setae similar in shape and length to submarginal setae. Margins of idiosoma with 30–35 µm long, needle-like setae.

Ventral idiosoma ( Fig. 43 View FIGURES 42 – 44 ). Ornamentation on sternal shield absent. Sternal setae short (ca 5–7 µm), smooth and needle-like. St 1 situated near anterior margin of genital shield, St 2 at level of posterior margin of coxae II, St 3 at mid-level of coxae III, St 4 at mid-level of coxae IV, St 5 near posterior margin of genital shield. Five pairs of extremly long (120–145 µm), needle-like setae situated in central and lateral area of ventral shield; two pairs of short (10–14 µm), needle-like setae placed lateral to anal opening. Caudal margins of ventral idiosoma with numerous long, needle-like setae, 30–35 µm. Ventral shield without sculptural pattern, but tile-like ornamentation situated laterally to pedofossae of coxae IV. Stigmata situated between coxae II and III. Peritremes S-shaped. Genital shield linguliform, without sculptural pattern or apical process. Base of tritosternum wide, tritosternal laciniae with four short, lateral branches and a long, smooth central point ( Fig. 45 View FIGURES 45 – 48 ).

Gnathosoma ( Fig. 46 View FIGURES 45 – 48 ). Corniculi horn-like, internal malae longer than corniculi, their margins pilose. Hypostomal setae h 1 smooth, long (83–85 µm), situated near anterior margin of gnathosoma, h 2, h 3 and h 4 marginally serrate, ca 19–20 µm long. Base of epistome with serrate margins, apical part marginally pilose. Movable digit of chelicera shorter than fixed digit, internal sclerotised node absent ( Fig. 48 View FIGURES 45 – 48 ).

Etymology. The name of the new species refers to the long dorsal and ventral setae.

Remarks. The new species belongs to Uropoda gibba   group ( Hirschmann, 1976 b), on the basis of the highly domed dorsal shield with a transverse furrow, and long setae in the central region of the dorsum. Eight species are known from this group, occurring in Japan, New Guinea and Vietnam ( WiŠniewski & Hirschmann, 1993). The new species can be easily separated from the other species of this group on the basis of the short setae lateral to the anal opening.


Hungarian Natural History Museum (Termeszettudomanyi Muzeum)


Institute of Spelology Emile Racovita