Antennoseius (Antennoseius) gwiazdowiczi Kavianpour & Nemati, 2018

Kavianpour, Mohammadreza, Nemati, Alireza, Mohseni, Mastaneh & KhaliliMoghadam, Arsalan, 2018, New ascid mite of the genus Antennoseius Berlese (Acari: Mesostigmata) from Iran, Persian Journal of Acarology 7 (3), pp. 245-254 : 246-251

Antennoseius (Antennoseius) gwiazdowiczi Kavianpour & Nemati sp. nov. ( Figs. 1–21 )

Antennoseius (A.) gwiazdowiczi .— Kavianpour et al., 2013: 37; de Moraes et al., 2016: 69 ; Kazemi, 2018: 4 (nomen nudum).

Type material Holotype, female, soil of a pomegranate orchard in Shahreza (32° 01´27 N, 51° 51´47 E), 1825 m a.s.l., Esfahan Province, Iran, coll. M. Kavianpour, and three female paratypes: Shahreza county , soil, 2018, coll. A. Nemati, are deposited in the Acarological Laboratory, Plant Protection Department, Agricultural College, Shahrekord University, Shahrekord ( APAS) Iran. One female paratype (same data as holotype) deposited in the Acarological collection, Jalal Afshar Zoological Museum ( JAZM), Department of Plant Protection , Faculty of Agriculture , University of Tehran, Karaj , Iran. One female paratype, same data as holotype, deposited in Senckenberg Museum für Naturkunde Görlitz Am Museum 1 02826 Görlitz, Germany.

Diagnosis (adult female) – Podonotal and opisthonotal shields reticulated throughout. Podonotal shield with 20 pairs of setae of which eight pairs (j2-j5, z2-z4 and s4) spur-like (except j1 spinelike) and short, setae r3-r6 on soft cuticle; with one extra paired setae (sx) between s3-s4. Opisthonotal shield with 15 pairs of setae, of which J1-5, Z4-5 and S4-5 barbed; 16 pairs of setae on soft lateral cuticle. Deutosternal groove with seven denticulate rows with diverse teeth arrangement. Without distinct and sclerotised presternal plates, remnants of presternal plates and wrinkle integument observed at anterior part of sternal shield. Sternal shield with quite divers in posterior margin and the situation of st3 placement. Tibia I with spin-like seta (al1) with sharp tip (apically curved in fresh specimens), coxa I with simple and normal setae.

Description (adult female)

Dorsal idiosoma ( Fig. 1 ) – Dorsal idiosoma 559–585 long and 325–328 wide (n = 5), divided into two shields, podonotal with 310-315 long, 325-330 wide and opisthonotal shield with 254-265 long and 286-308 wide. Podonotal with 20 pairs of setae: j1-j6, z1-z6, s1-s6, r2 of which eight pairs: j2-j5, z2-z4 and s4 spur-like ( Fig. 2 ) and short (7–8 long), other setae of podonotal shield long, except setae j1 and z1 ( Figs. 4–5 ), shield with one extra set of paired setae (sx) between s3-s4. Nine pairs of pore-like structures are visible on the surface of podonotal shield, r3-r6 located on soft cuticle, r3-r5 adjacent to lateral margin of podonotal shield and r6 on the cuticle lateral to podonotal and opisthonotal shield borders. Setae s6 barbed, the right one of s6 on podonotum in holotype absent ( Fig. 1 ). Opisthonotal shield with 15 pairs of setae, (J1-J5, Z1-Z5 and S1-S5), without extra setae, J1-5, Z4-5 and S4-5 barbed, which some of them shown in Figure 6 . Opisthonotal shield with nine pairs of pore-like structures, and soft lateral cuticle bears six pairs of setae (R1-R6).The measurement of dorsal setae is as follows: j1 (5–6), j6 (36–39); z1 (10–13), z5 (35–40), z6 (37–40); s1 (28–30), s2 (35), s3 (39–40), s5 (40), s6 (37–42), sx (35); r2 (30–34), r3 (29–30), r4 (25–30), r5 (28–32), r6 (25–28); J1 (32–39), J2 (32–35), J3 (34–35), J4 (33–35), J5 (35); Z1 (33–40), Z2 (35), Z3 (34–35), Z4 (35–36), Z5 (47–54); S1 (26–32), S2 (32–35), S3 (33–34), S4 (34) and S5 (37). Opisthonotum with setiform setae ( Fig. 3 ). An example of opisthonotal barbed setae shown in Figure 6 . Podonotal and opisthonotal shields with throughout reticulation as in Figure 1 . The shapes of some dorsal setae shown in Figures 2–6 .

Ventral idiosoma ( Figs. 7–11 ) – Tritosternum with columnar base divided nearly at midlevel and two serrated laciniae ( Figs. 7, 8 ). Without distinct and sclerotised presternal plates, remnants of presternal plates and wrinkle integument with transverse lines observed at anterior part of sternal shield. Sternal shield 125–132 long and 112–117 wide at level of st2, with irregular notch at median anterior margin ( Figs. 9, 10 ), usually with two pairs of setae: st1 = 17–20 and st2 = 12–19 and three pairs of lyrifissures (iv1 -3), setae st3 19–20 and st4 17–19 on soft cuticle. One of st3 setae (the left one) located adjacent to the posterolateral corner and another well out of sternal shield and both of them out of sternal shield in paratypes. Posterior and postero-lateral margins of sternal shield with quite diverse situation ( Figs.7, 9, 10 ). Epigynal shield 148–150 long and 49–52 wide, with one pair of simple setae (16–20) adjacent to its lateral margin at widest point, surface with two converged longitudinal prominence as inverted V-shaped ( Fig. 7 ).

Stigmatal openings at mid-level of coxae IV, peritreme extending anteriorly to level of setae z1, peritrematal shield and its extension posterior to the stigmatal opening (poststigmatal shield) with diverse shape ( Fig. 11 ), bears five pore-like structures, poststigmatal shield extending posteriorly beyond coxae IV as in Figures 7 & 11 . Opisthogastric area with two pairs of metapodal plates, the larger oval and granulate located posterior to poststigmatal shield and another narrow transverse between oval metapodal and poststigmatal shields. Anal shield pear shaped, ornamented with curved lines at anterior and lateral sides, 83–104 long and 109–114 wide, with one pair of para-anal setae (14–16) at the middle part of anal opening and post-anal seta (20–22), gv3 on lateral margins of anal shield nearly at level of postanal seta insertion;. Opisthogastric area with 15 pairs of setae: JV1-2 (15–17), JV3 (16–19), JV4 (18–21), JV5 (26–28), ZV1 (17–20), ZV2 (15–17), ZV3 (18–21), ZV4-5 (16–18). In one of paratype specimen, the left seta of JV3 located on lateral margin of anal shield and another one out of shield.

Gnathosoma – Corniculi horn-like and robust; hypostome with simple hypostomal setae, rostral setae (h1) longest (30–33), external posterior setae (h2 = 18–21), internal posterior setae (h3 = 16–17) and palp coxal setae (pc = 16–21) in length ( Fig. 12 ). Deutosternum with seven transverse rows of denticles with variation in teeth arrangement ( Figs. 12, 13 ). Anterior margin of epistome rounded ( Fig. 14 ) or nearly rounded ( Fig. 15 ) with a row of delicate teeth at the bottom ( Figs. 14, 15 ). Cheliceral fixed digit ( Fig. 16 ) bears setaceous pilus dentilis, small subapical tooth near a row of fine proximally teeth, movable digit 49–55 long, bidentate with small sharp ventral projection as in Figure 16 .

Palp ( Fig. 17 ) – With simple setae, 276–281 long, palp tarsal claw two tines.

Legs ( Figs. 18–21 ) – Leg I ( Fig. 18 ) 606–616 µm: coxa (65–78), 0 0/1 0/1 0; trochanter (57– 65) 1 0/1 1/2 1, dorsal seta (pd) on trochanter I spine-like, sparsely barbed; femur (112–117), 2 3/1 2/2 2, ad1 and pd1 short, thickened and spur-like, pd2 spine-like and barbed; genu (104–107), 2 3/1 3/2 2, pd2-3 small, thickened and spur-like; tibia (104–109), 2 3/1 3/2 2, al1 spine-like, elbowed and thickened, av1 and pv1-2 slightly thickened; tarsus (148–156), with four long setae subapically and ambulacrum; leg II ( Fig. 19 ) 419–437: coxa (39–49), 0 0/1 0/1 0; trochanter (52), 1 0/1 0/2 1; femur (83–86), 2 3/1 2/2 1, ad1 and pd1 slightly thickened and barbed; genu (68), 2 3/1 2/1 2; tibia (60–65), 2 2/1 2/1 2; tarsus (117); leg III ( Fig. 20 ) 421–426: coxa (34–42), 0 0/1 0/1 0 trochanter (52–55), 1 1/1 0/1 1, ad slightly thickened and barbed; femur (83), 1 2/1 1/0 1, ad1-2 barbed; genu (65), 2 2/1 2/1 1; tibia (62), 2 1/1 2/1 1; tarsus (122); leg IV ( Fig. 21 ) 554–572: coxa (31–42), 0 0/1 0/0 0 trochanter (70–73),1 1/1 0/1 1; femur (109–120), 1 2/0 1/1/1; genu (91), 2 2/1 3/0 1; tibia (86– 88), 2 1/1 3/1 2 tarsus (161–164). Coxa I lacks short and blunt setae; some of dorsal setae of legs with one or more barbs ( Figs. 18–21 ). Tarsi II-IV 16-16-16 (3 2/2 2/2 3 + mv and md), plus two short apical seta-like processes (could be considered as the remnants of ad1 and pd1 at the base of stalks).

Adult male – unknown.

Etymology

This species is named in honor of Dr. Dariusz J. Gwiazdowicz (Poznan University of Life Sciences, Poland).

Remarks

Antennoseius (Antennoseius) gwiazdowiczi Kavianpour and Nemati sp. nov., is similar to the Antennoseius (Antennoseius) maltzevi Eidelberg, 1994 but, it can be differentiated by the following characters. Antennoseius gwiazdowiczi Kavianpour & Nemati sp. nov., lacks prominent presternal shields; anterior margin of sternal shield with conspicuous notch; coxae I-II with simple and normal pv seta; tibia I with al1 as strongly thickened spin-like seta, al2, av and pv1-2 are spine-like; seta pd2 on femur I spine-like and barbed; some of dorsal setae on opisthonotum and especially on legs II-IV are sparsely barbed, while, A. maltzevi with a pair of well sclerotised presternal shields, anterior margin of sternal shield concave and without notch, coxae I-II with spine-like posterior seta, tibia I with simple setae; seta pd2 on femur I spur-like and without barbs; all setae of dorsal shield except Z5, smooth and lack barbs. Moreover, all setae on leg III and leg IV are smooth and lack barbs (observation on type specimens of A. maltzevi in Poznan University of Life Sciences, Department of Forest Protection, Poznań, Poland by second author).

Figures

Figures 1-6. Antennoseius gwiazdowiczi Kavianpour & Nemati sp. nov. (female) – 1. Dorsal view; 2. Dorsal setae j2-5, z2-4 and s4; 3. An example of dorsal simple setae; 4. z1; 5. j1; 6. An example of dorsal barbed setae.

Figures 7–11. Antennoseius gwiazdowiczi Kavianpour & Nemati sp. nov. (female) – 7. Ventral view; 8. Tritosternum; 9–10. Variation of posterior and lateral margins of sternal shield; 11. Variation of posterior part of poststigmatal shield.

Figures 12–17. Antennoseius gwiazdowiczi Kavianpour & Nemati sp. nov. (female) – 12. Hypostome; 13. Variation of deutosternal groove; 14–15. Variation of epistome; 16. Chelicera; 17. Palp.

Figures 18–21. Antennoseius gwiazdowiczi Kavianpour & Nemati sp. nov. (female) – 18. Leg I; 19. Leg II; 20. Leg III. 21. Leg IV.