Belba crassisetosa Bayartogtokh, 2000

Bayartogtokh, Badamdorj, 2004, Oribatid mites of the genera Belba and Belbodamaeus (Acari: Oribatida: Damaeidae) from Eastern Mongolia, Zootaxa 476, pp. 1-11 : 10-11

Belba crassisetosa Bayartogtokh, 2000

( Fig. 5 B)

Belba crassisetosa Bayartogtokh, 2000: 298 , figs. 1–13.

Measurements. Body length 594 µm, width of notogaster 345 µm, length of notogaster 478 µm.

Supplementary description. Body color reddish brown, with thick cerotegument; notogaster with part of exuvial scalps, legs with fungi micelles. Prodorsal tubercles absent, but a number of distinct microtubercles present anterior of each interlamellar seta. In the material examined here have not found the elongate ridge along the insertion pores of notogastral setae c1 and c2. The other characters are well in accord with those of the type material. Until now the species was known only from type locality, which situated in the central part of the country. The present finding is also interesting that the habitat of the collection locality of this material is significantly different than type locality. The ecological requirements of B. mongolica and B. crassisetosa are seem to be similar that they have been found before in cool temperate forests in central and northern parts of Mongolia.

Material examined. One specimen (mail): Basin River Numrugiin Gol, District Sumber, Province Dornod, soils under willow growing on the bank of river, 47°00’39”N, 199°22’59”E, 884m a.s.l., 26 May 2003, Col. B. Bayartogtokh.

Figures

FIGURE 5. Two known species of Belba. A: Belba mongolica Bayartogtokh, 2000 (dorsal view); B: Belba crassisetosa Bayartogtokh, 2000 (dorsal view).