Parasitus beta Oudemans and Voigts, 1904

Keum, Eunsun, Kaczmarek, Slawomir & Jung, Chuleui, 2016, New records of Parasitidae mites (Acari; Mesostigmata) in Korea, Journal of Species Research 5 (3), pp. 300-308 : 301-302

Parasitus beta Oudemans and Voigts, 1904

Parasitus beta Oudemans and Voigts, 1904 in Voigts Oudemans, 1904: 652; 1905: 219.

Parasitus beta Oudemans and Voigts, 1904 sensu Karg, 1965 ; 303, fig. 59b, female only; 1971: 425, female only. Parasitus beta Ouds. and Voigts, 1904 (Deutonymph only described) = P. fimetorum Berlese, 1904 , q.v.

Diagnosis Deutonymph: Podonotal shield with bears 20 pairs of setae and s 2 being situated off the shield. Setae j 1, j 4, z 5, s 5, s 6 and r 3 are stouter than the remaining setae which are very fine. The longest and stoutest, r 3 are also finely pilose. Opisthonotal shield with bears 15 pairs of setae of which three, J 5, Z 3 and S 4, are clearly stouter than the other marginal setae. The tectum is trispinate with the centre prong usually giving the appearance of being damaged distally.

Male: The idiosoma length is 809 μm and with transverse structure. The podonotal region bears 21 pairs of setae of which j 1, j 4, z 5, s 5 and r 3 are the stoutest. The remainder are slender. The opisthonotal region bears approximately 30 pairs of setae of which Z 1 and Z 3 are the stoutest and those towards the margins are amost as stout, whilst J 1­ J 4 are slender. The tectum is trispinate, the centre spine being slightly the longest.

Female: The idiosoma length is 983 μm. Dorsal shield covering entire podonotal shield is finely reticulated and bears 21 pairs of setae of j 1, j 4, z 5 and r 3 are longer and stouter. Setae s 5 is also stout but not long. The opisthonotal shield is also reticulated and bears 26 pairs of setae of Z 1, Z 3 and J 5 are the stoutest and are finely pilose at least distally. The genital shield is strongly pointed anteriorly, whilst posteriorly it merges with the weakly sclerotized but reticulated opisthogastric shield. The endogynium show a mushroom­shaped process. The tectum is trispinate with the centre prong multifid ( Fig. 2 ).

Material examined. Total 42 individuals (deutonymph, female and male) collected from riparian grassland and apple orchard grassland habitats. Information of sampling and habitats are detailed in Tables 2 and 3 .

Voucher specimen deposition. Adult female, NIBR No. NIBRIV0000325951.

Distribution: England, Scotland, Ireland, Germany ( Hyatt, 1980), South East Slovakia ( Mašán and Stanoko, 2005), Poland ( Błoszyk et al., 2005; Gwiazdowicz and Klemt, 2004), Hungary ( Salmane and Kontschán, 2005), Gyeongsangbuk­do, Korea (this study).

Figures

Fig. 2. Morphological characteristics of four newly found Parasitinae mites in this study.