Proprioseiopsis sharovi ( Wainstein, 1975 )

Faraji, Farid & Hoekstra, Paul H., 2021, Some new species records of the predatory mite family Phytoseiidae (Acari: Mesostigmata) from The Netherlands, Soil Organisms 93 (1), pp. 35-57 : 43-45

Proprioseiopsis sharovi ( Wainstein, 1975)

For other names and synonyms see Demite et al. (2021)

( Fig. 6 : A–E)

Female– One specimen measured.

Idiosomal setal pattern: 10A:8E/JV–3:ZV.

Dorsal idiosoma ( Fig. 6A ) – Dorsal shield 365 long and 248 wide at j 6 level smooth with a pair of strips between j 3 and Z 5, with 18 pairs of dorsal setae (r 3 and R 1 included); dorsal shield setae smooth, except for Z 4 and Z 5, slightly serrated; lengths: j 1 19, j 3 28, j 4 4–6, j 5 4–6, j 6 4–6, J 5 8, z 2 13, z 4 10, z 5 4–6, Z 1 4–6, Z 4 93, Z 5 122, s 4 66, S 2 4 –6, S 4 8, S5 9; setae r 3 13 and R 1 10 on lateral integument; Z 4, Z 5 and s 4 are the longest; dorsal shield with 7 pairs of solenostomes (gd 1, gd 2, gd 4, gd 5, gd 6, gd 8, gd 9) and 12 pairs of small poroids. Setae z 2 slightly longer than z 4.

Peritreme – Extending almost beyond setae j 1 ( Fig. 6A ).

Ventral idiosoma ( Fig. 6B ) – Sternal shield wider than long, posterior margin slightly concave, smooth with a few lateral striae, 62 long, 80 wide at level of setae ST 2, three pairs of setae and two pairs of pores (iv 1 and iv 2), ST 1 30, ST 2 28, ST 3 27; distances between ST 1 –ST 3 62, ST 1 –ST 1 51 and ST 2 –ST 2 66; metasternal setae ST 4 27 and a pair of pores (iv 3) on small platelets (metasternal shields); genital shield smooth width at widest point 81, ST 5 28; two pairs of metapodal shields, primary 25 long and accessory 13 long; ventrianal shield pentagonal ( Fig. 6B ), reticulated all over but slightly darker at the edges, length 111, width at level of setae ZV 2, 103, and width at level of paranal setae 71; with three pairs of preanal setae (JV 1 20, JV 2 19, ZV 2 19); four pairs of setae surrounding ventrianal shield on integument (JV 4 13, JV 5 51, ZV 1 17, ZV 3 13), five pairs of pores and one pair of small platelets surrounding ventrianal shield. Ventrianal shield with a pair of small round pores (gv 3) posteromesad to JV 2, distance between these pores 42.

Spermatheca – Calyx cup shaped 6 long, 13 in diameter at the middle part of the calyx; atrium U-shaped ( Fig. 6C ).

Chelicera – Fixed digit 28 long with 10 teeth and a pilus dentilis; movable digit 32 long with 2 teeth ( Fig. 6D ).

Legs –LegIV( Fig.6E ) withthreepointedmacrosetae, SgeIV 68, StiIV 47, StIV 63; length of macrosetae on other legs: SgeIII 32, SgeII 25; leg I with no recognizable macrosetae; length of legs from the base of coxae to the tip of claws: leg I 373, leg II 295, leg III 293, leg IV 385; chaetotactic formulae of genua and tibiae I–II–III–IV with 10 (2-2/1, 2/1-2) – 8 (2-2/1, 2/0-1) – 7 (1-2/1, 2/0-1) – 7 (1-2/0, 2/1-1) and 10 (2-2/1, 2/1-2) – 7 (1-1/1, 2/1-1) – 7 (1-1/1, 2/1-1) – 6 (1-1/1, 2/0-1) setae respectively.

Distribution – Germany, Greece, Norway, Russia and The Netherlands (this study).

Specimen examined – One female, 29 June 2018, soil of a grassland meadow, situated near the village of Beuningen , The Netherlands (51°50’11.33”N 5°45’01.57”E), collector: Bogdan Dehelean.

Remarks – This is a new species record for Dutch fauna. The morphological characters and measurements of the specimen collected from The Netherlands fit well with those re-described by Faraji et al. (2018) from Germany. Proprioseiopsis sharovi can be easily identified by the unique shape of its spermatheca.

Figures

Figure 6. Proprioseiopsis sharovi (Wainstein) (Female): (A) Idiosoma, dorsal view; (B) Idiosoma, ventral view; (C) Spermathecae; (D) Chelicera; (E) Leg IV.