Typhlodromus (Anthoseius) ueckermanni Liao & Ho, 2021

Liao, Jhih-Rong, Ho, Chyi-Chen & Ko, Chiun-Cheng, 2021, Predatory mites (Acari: Mesostigmata: Phytoseiidae) intercepted from samples imported to Taiwan, with description of a new species, Zootaxa 4927 (3), pp. 301-330 : 311-314

Typhlodromus (Anthoseius) ueckermanni Liao & Ho sp. nov.

( Figures 1–8 )

Diagnosis. Female dorsal surface strongly reticulated, bearing 20 pairs of dorsal setae (including r3 and R1). All setae smooth except Z5 is slightly serrated. Five pairs of solenostomes (gd2, gd4, gd6, gd8, gd9) visible on the dorsal shield. Peritreme extending to level of seta j3. Sternal shield with two pairs of setae; ventrianal shield bearing four pairs of pre-anal setae, with a pair of small rounded pre-anal solenostomes. Fixed digit of chelicera with four teeth; movable digit with one tooth. Calyx of spermatheca cup-shaped with distal half lightly sclerotised. Leg IV with one pair of macrosetae St IV; genu II with eight setae.

Female (n=4). A lightly sclerotised mite. Idiosomal setal pattern: 12A:8A/JV:ZV.

Dorsum ( Fig. 1 ). Dorsal shield nearly oval, constricted at level of R1 , strongly reticulated; 333 329 (314–339) long (j1–J5 level) and 176 169 (159–176) wide at level of j6, 182 174 (163–182) wide at level of S4; five pairs of solenostomes on dorsal shield, (gd2, gd4, gd6, gd8, gd9), thirteen pairs of lyrifissures, (id1, id2, id4, id6, idm2, idm3, idm4, idm5, idm6, is1, idl2, idl3, idl4); length of setae: j1 21 21 (20–22), j3 24 27 (24–29), j4 15 17 (15–20), j5 15 16 (15–17), j6 17 20 (17–23), J2 20 22 (20–25), J5 11 9 (6–11), z2 18 20 (18–22), z3 28 27 (26–28), z4 22 25 (22–26), z5 17 19 (17–22), Z4 34 33 (31–35), Z5 58 57 (54–59), s4 27 30 (27–33), s6 27 32 (27–35), S2 30 32 (30–34), S4 28 30 (28–31), S5 27 26 (25–27), r3 33 31 (28–33), R1 23 26 (23–29). All setae smooth, sharp pointed, except for Z5 slightly serrated.

Peritreme ( Figs 1, 2 ). Peritreme extending to level of seta j3; peritremal shield lightly sclerotised, with one pair of solenostomes (gd3) and one pair of lyrifissures (id3).

Venter ( Fig. 2 ). Sternal shield smooth, posterior margin irregular, much wider than long, 54 53 (49–58) long, 62 66 (62–71) wide, with two pairs of setae st1 27 25 (22–27), st2 27 24 (20–27), and two pairs of lyrifissures (pst1, pst2). Sternal seta st3 23 23 (21–24) on separated platelets. Exopodal shield at coxae II–IV. Metasternal platelets tear-shaped, with one pair of metasternal setae, st4 25 26 (25–28), and one pair of lyrifissures (pst3). Genital shield smooth, truncate posteriorly, with one pair of genital setae st5 22 21 (18–22), 60 61 (57–66) wide at level of genital setae. Distances between st1–st1 51 51 (48–52), st2–st2 51 55 (51–58), st5–st5 58 54 (50–58). Ventrianal shield pentagonal with waist slightly below JV2 level, reticulated, 104 104 (96–115) long, 83 81 (79–83) wide at level of ZV2, 73 74 (71–77) wide at level of anus; with four pairs of pre-anal setae, JV1 17 17 (17–19), JV2 15 13 (10–15), JV3 12 15 (12–20), ZV2 13 16 (13–19), solenostomes gv3 small and rounded; Pa 13 12 (11–13), Pst 11 12 (11–15) on shield. Setae JV4 18 16 (13–19), JV5 53 49 (47–53), ZV1 17 1 8 (14–21), ZV3 9 12 (9–14) on interscutal membrane. All setae smooth, sharp pointed. Two metapodal plates: primary plates 25 27 (25–29) long, secondary plates 4 4 (3–4) wide, 11 10 (11–13) long, 1 2 (1–2) wide.

Spermatheca ( Fig. 4 ). Calyx bell-shaped and elongated, flaring distally, with apical half thick (sclerotised), 17 18 (17–20) long, 9 11 (9–13) wide, atrium incorporated within the calyx, major duct broad.

Chelicera ( Fig. 3 ). Movable digit 26 27 (26–27) long, with one tooth; fixed digit 25 26 (25–27) long, with four teeth and pilus dentilis.

Legs ( Figs 5–8 ). Complement of setae on coxae I IV: 2 2 2 1. Chaetotaxy (femur to basitarsus): leg I, 2 3/1 2/2 2, 2 2/1 1/1 2, 2 2/1 2/1 2, 1 1/0 1/0 1; leg II, 2 3/1 2/1 1, 2 2/1 2/0 1, 1 1/1 2/1 1, 1 1/0 1/0 1; leg III, 1 2/1 1/0 1, 1 2/1 2/0 1, 1 1/1 2/1 1, 1 1/0 1/0 1; leg IV, 1 2/1 1/0 1, 1 2/1 2/0 1, 1 1/1 2/0 1, 1 1/0 1/0 1. Macrosetae: St IV (pd) 33 30 (28–33). Macrosetae setiform.

Type specimens. Female Holotype: South Africa: one female ( HAL 095G078) from Rosmarinus officinalis (Lamiaceae) , 7 Dec 2006 (NTU). Paratypes: three females ( HAL 095G078) data same with holotype (NTU).

Etymology. The specific name “ ueckermanni “ refers to Prof. Eddie Ueckermann, who provided detailed comparison of this species and T. (A.) lootsi.

Previous records. Asia: South Africa (present study).

Remarks. The new species was compared with all known species of the subgenus Anthoseius based on Phytoseiidae Database ( Demite et al. 2020) and electronic polytomous key ( Hernandes et al. 2012). Among them, it shows a close affinity to T. (A.) aktherecus (Kolodochka), T. (A.) bagdasarjani Wainstein & Arutunjan, T. (A.) georgicus Wainstein, T. (A.) involutus Livshitz & Kuznetsov, T. (A.) karaisaliensis D̂ker & Kazak, T. (A.) kerkirae Swriski & Ragusa, T. (A.) lootsi Schultz, T. (A.) ponticus (Kolodochka), T. (A.) recki Wainstein, T. (A.) rhenanus (Oudemans) , T. (A.) salvia (Kolodochka), T. (A.) spiralis (Wainstein & Kolodochka), and mostly based on the shape of calyx of spermatheca and general apperance. Differences between T. (A.) ueckermanni sp. nov. and related species are given in Table 1 .

Figures

FIGURES 1–4. Typhlodromus (Anthoseius) ueckermanni sp. nov., Female. 1. dorsal shield; 2. ventral idiosoma; 3. chelicera; 4. spermatheca.

FIGURES 5–8. Typhlodromus (Anthoseius) ueckermanni sp. nov., Female, legs. 5. leg I posterior view; 6. leg II posterior view; 7. leg III anterodorsal view; 8. leg IV anterior view.