Centrouropoda bahariyaensis Abo-Shnaf & Allam 2019, n. sp.
Creators: name: Abo-Shnaf, Reham I. A.
name: Allam, Sally F. M.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Uropodidae
Centrouropoda
Centrouropoda bahariyaensis

description: Centrouropoda bahariyaensis n. sp.
(Figs 1–29)
urn:lsid:zoobank.org:act: E466C372-B91F-4A7D-8634-B47A1E25F0FD
Diagnosis. Dorsum with 37 pairs of aciculate setae and 14 pairs of pilose setae, vertical setae pilose, setae Z5 and S5 on a small platelet in both sexes; tritosternum with a single basal stalk, which splits into three laciniae, median lacinia pilose and longer than laterals, paralaciniae smooth; anterior margin of pygidial shield narrowly rounded, posterior end trapezoidal; opisthogaster with six pairs of setae (JV5 and ZV4 pilose), with three pairs of pilose submarginal ventral setae and six pairs of simple setae; epistome with a broad dentate base and medial dentate projection; fixed cheliceral digit with a curved distal process; all legs provided with well developed ambulacral apparatus, tarsus I with a characteristic claw.
Material examined. Holotype female, one paratype female, one paratype male, three paratype larvae, four paratype protonymphs, one paratype deutonymphal female and two paratype deutonymphal males, collected from the red palm weevil, R. ferrugineus, November 20, 2017 at El-Bawiti, Bahariya Oasis (25°47’E, 29°10’N); deposited in the mite reference collection of the Egyptian Society of Acarology Museum (ESAM), Zoology and Agricultural Nematology Department, the Faculty of Agriculture, Cairo University, Giza governorate, Egypt. Two paratype females from the same substrate, locality and date; deposited in the Montpellier SupAgro—INRA Acarology collection, Montpellier, France.
Female (n=4). Dorsal idiosoma (Fig. 1) Dorsal shield oval, 574 (529–639) µm long and 394 (369–437) µm wide at widest level; with 37 pairs of aciculate setae, 14 pairs of pilose setae, 22 pairs of distinct lyrifissures and four pairs of distinct pores. Most dorsal shield setae of uniform length and shorter than distance to the subsequent seta, and associated with a pore; setae Z5 and S5 on small platelets. Marginal shield narrow, fused with dorsal shield anterior of z3; with 13 pairs of aciculate setae and a pair of pilose setae, most setae of uniform length and associated with a pore. Lengths of some dorsal setae: j1 49 (42–53), j5 39 (39–40), z1 43 (39–47), z3 47 (47–49), z6 41 (36–44), s4 42 (39–47), s6 43 (42–46), r3 41 (34–49), Z2 40 (38–43), Z4 43 (39–48), Z5 68 (61–77), S147 (44–52), S3 44 (42–49), S4 46 (42–49), S5 65 (59–76).
Ventral idiosoma (Figs 2, 3) All setae aciculate and smooth, except JV5 and ZV4 pilose. Tritosternum base 21 (20–23) long and 42 (38–45) wide at mid-level, with three laciniae, laciniae 86 (78–99) long, median lacinia pilose and longer than laterals, free for about 38% of their total length (Fig. 2). Sternal shield with anterior margin well delineated, medially convex, with four pairs of simple setae (st1–st4), three pairs of lyrifissures and two pairs of pores, st1 shortest, inserted anterior to pygidial shield, accompanied by a pair of lyrifissures iv1, st2–st4 lateral to pygidial shield. Endopodal plates between coxae I–II, II–III and III–IV fused to sternal shield. Pygidial shield tongue-shaped, 209 (191–218) long; posterior margin at anterior margin of coxae IV, straight, 70 (60–79) wide at posterior corners; shield located between coxae II–III; pygidial seta st5 absent. Opisthogaster with six pairs of opisthogastric setae (JV 2, JV3, JV5 and ZV2–ZV4) in addition to circumanal setae (Ad1, Ad2 and Pa), five pairs of distinct lyrifissures and six pairs of distinct pores; anal opening small, 32 (27–38) long including frame. With six pairs of submarginal ventral setae, short and aciculate, most of uniform length and associated with a pore, and three pairs of pilose setae, all long. Exopodal plates between coxae II–III and III–IV fused with endopodal plates (Fig. 3). Lengths of setae: st1 18 (16–20), st2 21 (20–23), st3 22 (21–23), st4 24 (21–26), JV2 29 (27–31), JV3 37 (34–40), JV5 71 (64–77), ZV2 43 (39–49), ZV3 52 (44–59), ZV4 56 (53–59); Ad1 34 (33–36), Ad2 30 (27–31) and Pa 14 (13–16).
Peritreme (Fig. 3) Peritrematic plate broadly fused with exopodal plate between coxae II–III; stigmata located at level between coxae II–III; with two pairs of lyrifissures and a pair of pores behind coxa IV; peritreme straight anteriorly.
Gnathosoma (Figs 4–6) Epistome with a broad dentate base and medial dentate projection (Fig. 4). Fixed cheliceral digit 53 (48–57) long, with six teeth; movable cheliceral digit 44 (40–47) long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct (Fig. 5). Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 29 (25–31) long and 11 (10–11) wide at the base. Hypostomal setae h1 long and smooth, h2 shortest and stout, h3 longest and smooth, h4 short and pilose. Ventral setae on palp trochanter av long, pv short, all smooth (Fig. 6). Lengths of setae: h1 44 (39–47), h2 56 (52–60), h3 11 (10–12) and h4 18 (17–20); palp trochanter setae av 58 (57–60) and pv 11 (10–13).
Legs (Figs 7–12) Pretarsi I–IV each with a pair of claws and pulvillus with three rounded lobules (Figs 11, 12). Lengths of legs: I—302 (284–322), II—289 (259–311), III—285 (272–304) and IV— 300 (279–320). Leg chaeto-taxy—coxae: 2–2–2–1; trochanters: 4–4–4–4; femora: I—9 (1 2/1 2/2 1); II—9 (2 2/1 2/1 1); III—6 (1 2/1 1/0 1); IV— 7 (1 2/1 2/0 1); genua: I—6 (1 2/0 2/0 1); II—6 (1 2/0 2/0 1); III—6 (1 2/0 2/0 1); IV— 4 (1 2/0 1/0 0); tibiae: I—7 (1 1/1 2/1 1); II—7 (1 1/1 2/1 1); III—7 (1 1/1 2/1 1); IV— 7 (1 1/1 2/1 1). Most leg setae aciculate. Some dorsal and lateral setae on tarsus II–IV thick and spine-like.
Male (n=1). Dorsal idiosoma (Fig. 13) Dorsal shield oval, with longitudinal broken striae in anterior two-thirds, irregular small markings posteriad J2, Z 2 and S3, and finely ornamented in region between J4 and J5; 527 µm long and 371 µm wide at widest level; with 27 pairs of aciculate setae, 38 pairs of pilose setae, two pairs of distinct lyrifissures and no distinct pores. Relative lengths of setae as in adult female, most dorsal shield setae associated with a pore; setae Z5 and S5 on small platelets. Marginal shield narrow, with a few irregular striae and ornamented posteriorly, fused with dorsal shield anterior of z3; with 14 pairs of aciculate setae and a pair of pilose setae, most of uniform length and associated with a pore. Lengths of some dorsal setae: j1 69, j5 52, z1 68, z2 74, z3 66, z6 66, s4 65, s6 68, r3 73, J2 44, J3 57, J4 65, J5 59, Z2 62, Z3 69, Z4 66, Z5 177, S1 81, S3 49, S4 60, S5 151.
Ventral idiosoma (Figs 14, 15) All setae aciculate and smooth, except JV5 and ZV4 pilose. Tritosternum base 39 long and 56 wide at mid-level, laciniae 68 long, with three laciniae, median lacinia pilose and longer than laterals, free for about 32% of their total length (Fig. 14). Sternal region with anterior margin well delineated and dentate, medially convex, fused with whole endopodal plates, mostly smooth with a few broken longitudinal striae; with four pairs of simple setae (st1–st4) and four pairs of lyrifissures, st1 and st2 anteriad pygidial opening, st3 laterad pygidial opening, st4 posterolaterad pygidial opening. Pygidial opening oval, 69 long and 48 wide, displaced at level of coxae III; pygidial seta st5 behind pygidial opening; distance between pygidial setae 33; parapygidial lyrifissures (iv5) on unsclerotised cuticle posterolaterad st5. Opisthogaster with broken transverse striae, with six pairs of opisthogastric setae (JV 2, JV3, JV5 and ZV2–ZV4) in addition to circumanal setae (Ad1, Ad2 and Pa), a pairs of distinct lyrifissures and three pairs of distinct pores; anal opening small, 23 long including frame; intercoxal region 450 long and 335 wide at widest level. With five pairs of submarginal ventral setae, short and aciculate, most of uniform length and associated with a pore, and three pairs of pilose setae, all long. Exopodoal plates between coxae II–III and III–IV fused with endopodal plates (Fig. 15). Lengths of setae: st1 26, st2 22, st3 16, st4 21, st5 18, JV2 23, JV3 36, JV5 98, ZV2 33, ZV3 34, ZV4 53; Ad1 31, Ad2 30 and Pa 16.
Peritreme (Fig. 15) Peritrematic plate broadly fused with exopodal plate between coxae II–III; stigmata located at level between coxae II–III; with two pairs of lyrifissures and a pair of pores behind coxa IV; peritreme curved down anteriorly.
Gnathosoma (Fig. 16) Fixed cheliceral digit 64 long, with six teeth; movable cheliceral digit 48 long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct (Fig. 16). Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 30 long and 14 wide at the base. Epistome and hypostomal setae as in adult female. Lengths of setae: h1 44, h2 12, h3 60 and h4 25; palp trochanter setae av 57 and pv 10.
Legs (Figs 17–23) Pretarsi I and IV each with a pair of claws and pulvillus with three rounded lobules (Figs 21, 23), pretarsi II–III each with a short claw and pulvillus with three lobules (Fig. 22). Lengths of legs: I—324, II—339, III—320 and IV— 369. Leg chaetotaxy—coxae: 2–2–2–1; trochanters: 4–4–4–4; femora: I—9 (1 2/1 2/2 1); II—9 (2 2/1 2/1 1); III—6 (1 2/1 1/0 1); IV— 7 (1 2/1 2/0 1); genua: I—8 (1 2/1 2/1 1); II—6 (1 2/0 2/0 1); III—6 (1 2/0 2/0 1); IV— 4 (1 2/0 1/0 0); tibiae: I—7 (1 1/1 2/1 1); II—7 (1 1/1 2/1 1); III—7 (1 1/1 2/1 1); IV— 7 (1 1/1 2/1 1). Most leg setae thick and spine-like.
Deutonymph female (n=1). Dorsal idiosoma (Fig. 24) Oval, smooth; 484 µm long and 333 µm wide at widest level; with 38 pairs of aciculate setae, eight pairs of pilose setae, 16 pairs of distinct lyrifissures and no distinct pores. Most dorsal shield setae of uniform length and shorter than distance to the subsequent seta. Marginal shield narrow, fused with dorsal shield anteriorly at level of z1; with ten pairs of aciculate setae and a pair of pilose setae, most of uniform length. Lengths of some dorsal setae: j1 16, j5 27, z1 29, z3 26, z6 29, s4 26, s6 29, r3 26, J5 22, Z2 35, Z4 29, Z5 31, S1 33, S3 27, S5 23.
Ventral idiosoma (Fig. 25) All setae aciculate and smooth, except JV5 pilose. Tritosternum with three laciniae, base 12 long and 40 wide at mid-level, laciniae 72 long, median lacinia longer than laterals, free for about 34% of their total length. Sternal shield with anterior margin delineated, medially convex, with five pairs of simple setae (st1–st 5) and three pairs of lyrifissures, distance between pygidial setae 35. Endopodal plates between coxae I–II, II–III and III–IV fused to sternal shield. Opisthogaster with a triangular punctate plate, having three pairs of opisthogastric setae (JV 2, JV3 and ZV4) in addition to circumanal setae (Ad1, Ad2 and Pa), a pair of distinct lyrifissures and three pairs of distinct pores; anal opening small, 27 long including frame. Unsclerotised cuticle of opisthogaster with a pair of setae (JV 5). With three pairs of submarginal ventral setae, short and aciculate, most of uniform length and a pair of pilose setae, long. Exopodal plates between coxae II–III and III–IV fused with endopodal plates (Fig. 25). Lengths of setae: st1 16, st2 16, st3 16, st4 16, st5 12, JV2 26, JV3 12, JV5 34, ZV4 31; Ad1 11, Ad2 22 and Pa 7.
Peritreme (Fig. 25) Peritrematic plate broadly fused with exopodal plate between coxae II–III; stigmata located at level between coxae II–III; with two pairs of lyrifissures and a pair of pores behind coxa IV; peritreme straight forward anteriorly.
Gnathosoma Epistome with a broad dentate base and medial dentate projection. Fixed cheliceral digit 46 long, with six teeth; movable cheliceral digit 35 long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct. Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 22 long and 8 wide at the base. Hypostomal setae h1 long and smooth, h2 shortest and stout, h3 longest and smooth, h4 short and pilose. Ventral setae on palp trochanter av long, pv short, all smooth. Lengths of setae: h1 21, h2 8, h3 29 and h4 14; palp trochanter setae av 26 and pv 8.
Legs. Pretarsi I–IV each with a pair of claws and pulvillus with three rounded lobules. Lengths of legs: I—250, II—253, III—261 and IV— 250.
Deutonymph male (n=2). Dorsal idiosoma (Fig. 26) Oval, with longitudinal broken striae over most its surface and a small wavy markings posteriad Z4 and S3 setae; 443–448 µm long and 331–333 µm wide at widest level; with 43 pairs of aciculate setae, eight pairs of pilose setae (base of j1 and z2 setae present), 14 pairs of distinct lyrifissures and 13 pairs of distinct pores. Most dorsal shield setae of uniform length and shorter than distance to the subsequent seta. Marginal shield narrow; with 12 pairs of aciculate seate. Lengths of some dorsal setae: j 2 16–17, j 3 26–29, j 5 27–29, z 3 27–28, z6 29, s4 26, s 6 29 –31, r 3 16–18, Z 2 27–29, Z4 33–36, Z 5 21–22, S 1 30 –31, S 3 27 –31, S 5 18 –20.
Ventral idiosoma (Fig. 27) All setae aciculate and smooth. Tritosternum with three laciniae, base 20–22 long and 22–38 wide at mid-level, laciniae 73–75 long, median lacinia longer than laterals, free for about 34–35% of their total length. Sternal shield with anterior margin delineated, medially convex, with five pairs of simple setae (st1–st 5) and three pairs of lyrifissures. Pygidial opening oval, 64–66 long and 43–46 wide, displaced at level of coxae III; distance between pygidial setae 36–40. Endopodal plates between coxae I–II, II–III and III–IV fused to sternal shield. Opisthogaster with a triangular punctate plate, having five pairs of opisthogastric setae (JV 2, JV3, JV5 and ZV3, ZV4) in addition to circumanal setae (Ad1, Ad2 and Pa), a pair of distinct lyrifissures and two pairs of distinct pores; anal opening small, 20–22 long including frame. With a pair of submarginal ventral setae, long and aciculate. Exopodal plates between coxae II–III and III–IV fused with endopodal plates (Fig. 27). Lengths of setae: st 1 11–12, st2 16, st 3 15–16, st 4 15–16, st 5 14–16, JV 2 23–26, JV 3 10–13, JV 5 17–21, ZV 3 8–10, ZV 4 28–30; Ad 1 10–13, Ad 2 21–22 and Pa 8–10.
Peritreme (Fig. 27) Peritrematic plate broadly fused with exopodal plate between coxae II–III; stigmata located at level between coxae II–III; with two pairs of lyrifissures and a pair of pores behind coxa IV; peritreme straight anteriorly.
Gnathosoma Fixed cheliceral digit 40–42 long, with six teeth; movable cheliceral digit 29–30 long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct. Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 22–23 long and 7 wide at the base. Epistome and hypostomal setae as in deutonymph female. Ventral setae on palp trochanter av long, pv short, all smooth. Lengths of setae: h 1 22–25, h2 5–7, h 3 30–31 and h 4 12–16; palp trochanter setae av 31–34 and pv 10.
Legs Pretarsi I–IV each with a pair of claws and pulvillus with three rounded lobules. Lengths of legs: I—225– 230, II—254–257, III—242–248 and IV— 248.
Protonymph (n=4). Dorsal idiosoma (Fig. 28) Oval, with anteromedian punctate oval plate over most its surface, two pairs of oval punctate plates laterally and a transverse punctate plate near posterior margin; 371 (331–416) µm long and 237 (209–266) µm wide at widest level; with 26 pairs of aciculate setae, six pairs of pilose setae, six pairs of distinct lyrifissures and a pair of distinct pores. Most dorsal shield setae of uniform length and shorter than distance to the subsequent seta. Marginal shield narrow, fused with dorsal shield anteriorly at level of j1; with seven pairs of aciculate seate. Lengths of some dorsal setae: j1 20 (18–21), j2 21 (21–22), z3 35 (31–39), z6 31, s4 24 (22–26), s6 37 (34–39), Z2 38 (34–43), Z3 10 (9–12), Z4 12 (10–14), Z5 38 (36–42), S3 28 (25–30), S4 18 (16–19), S5 15 (13–17).
Ventral idiosoma (Fig. 29) All setae aciculate and smooth. Tritosternum with three laciniae, base 18 (13–25) long and 27 (23–29) wide at mid-level, laciniae 49 (40–53) long, median lacinia longer than laterals, free for about 36% of their total length. Sternal shield with anterior margin delineated, medially convex, with four pairs of simple setae (st1–st4) and three pairs of lyrifissures. Pygidial seta st5 behind coxae IV; distance between pygidial setae 39 (33–43). Endopodal plates between coxae I–II, II–III and III–IV fused to sternal shield. Opisthogaster with a transverse oval punctate plate near posterior margin having a pair of adanal setae (Ad2) and post-anal seta (Pa), two pairs of distinct lyrifissures and no distinct pores; anal opening small, 20 (18–21) long including frame. Unsclerotised cuticle of opisthogaster with a pair of opisthogastric setae (ZV4), a pair of adanal setae (Ad1) and a pair of distinct lyrifissures. With no submarginal ventral setae. Exopodal plates between coxae II–III and III–IV fused with endopodal plates (Fig. 29). Lengths of setae: st1 14, st2 12 (10–14), st3 19 (18–21), st4 18 (17–20), st5 20 (19–22), ZV4 14 (13–16); Ad1 5, Ad2 18 (16–20) and Pa 10 (9–10).
Peritreme (Fig. 29) Peritrematic plate narrow, restricted to region along peritreme, separate from exopodal plate; extending posteriorly to region laterad margin of coxae III; with two pairs of lyrifissures and a pair of pores posterior to stigmata; stigmata located at level between coxae II–III, peritreme straight forward anteriorly.
Gnathosoma Epistome with a broad dentate base and medial dentate projection. Fixed cheliceral digit 37 (35– 38) long, with six teeth; movable cheliceral digit 26 (25–27) long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct. Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 17 (16–18) long and 7 (6–8) wide at the base. Hypostomal setae h1 long and smooth, h2 shortest and stout, h3 longest and smooth, h4 short and pilose. Ventral setae on palp trochanter av long, pv short, all smooth. Lengths of setae: h1 28 (26–31), h2 6 (5–7), h3 31 (29–34) and h4 15 (12–17); palp trochanter setae av 20 (18–21) and pv 11 (10–11).
Legs Pretarsi I–IV each with a pair of claws and pulvillus with three rounded lobules. Lengths of legs: I—188 (182–198), II—205 (191–214), III—188 (180–198) and IV— 199 (189–208).
Larva (n=3). Dorsal idiosoma (Fig. 30) Oval, with fragmented punctate platelets over most its surface; 249 (243–253) µm long and 167 (155–185) µm wide at widest level; with 15 pairs of aciculate setae, a pair of distinct lyrifissures and no distinct pores. Most dorsal shield setae of uniform length and shorter than distance to the subsequent seta. Lengths of some dorsal setae: j1 13 (13–14), j5 13 (12–14), z1 16 (15–17), z3 15 (14–16), z6 15 (14–16), s4 16 (14–17), s6 21, Z2 13 (13–14), Z4 17 (16–18), Z5 21 (20–23), S1 18 (16–20), S3 29 (26–31), S4 32 (29–35), S5 28 (27–29).
Ventral idiosoma (Fig. 31) All setae aciculate and smooth. Tritosternum with three laciniae, base 13 (10–16) long and 9 (8–10) wide at mid-level, laciniae 41 (39–44) long, median lacinia longer than laterals, free for about 40% of their total length. Body venter with three pairs of sternal setae (st1–st3). Opisthogaster with a crescentic punctate plate posteriad anal opening having only post-anal seta (Pa). Unsclerotised cuticle of opisthogaster with a pair of setae (ZV4) and para-anal setae (Ad1, Ad2); no distinct lyrifissures or pores; anal opening small, 16 long including frame. With three pairs of submarginal ventral setae, long and aciculate, most of uniform length (Fig. 31). Lengths of setae: st1 13 (13–14), st2 16 (16–18), st3 19 (18–20), ZV4 24 (22–26); Ad1 21 (20–23), Ad2 24 (23–26) and Pa 11 (10–12).
Peritreme Not distinguishable.
Gnathosoma Epistome with a broad dentate base and medial dentate projection. Fixed cheliceral digit 27 (26–27) long, with five teeth; movable cheliceral digit 28 (27–29) long, with three teeth. Cheliceral antiaxial and dorsal lyrifissures and dorsal seta and nodulus distinct. Deutosternal groove narrow and smooth. Corniculi parallel to each other, about 15 (14–16) long and 5 (4–5) wide at the base. Hypostomal setae h1 long and smooth, h2 shortest and stout, h3 longest and smooth, h4 short and pilose. Ventral setae on palp trochanter av long, pv short, all smooth. Lengths of setae: h1 27 (26–29), h2 5, h3 44 (40–47) and h4 21 (20–21); palp trochanter setae av 20 (18–22) and pv 9.
Legs Pretarsi I–III each with a pair of claws and pulvillus with three rounded lobules. Lengths of legs: I—175 (169–180), II—186 (180–194) and III—179 (173–182).
Etymology. The name bahariyaensis refers to “from Bahariya Oasis”, locality where the type specimens were collected.
Remarks. This new species is most similar to Centrouropoda almerodai Hiramatsu & Hirschmann, 1992, C. rackae Hirschmann, 1975, C. rhynchophorus (El-Bishlawy & Allam, 2007) and C. zaheri (Abd El-Ghani, 2009). The main differences between the new species and the other closest species were in Table 1.
The species has sexual dimorphism as the dorsal chaetotaxy of females differ from that of males. Also there are sexual differences in this mite species, such as coxal setae on leg IV are needle-like in females and short and robust in males. Differences of leg setaion such as setae (av1 and pv2) on genu I (1 2/1 2/1 1) are present in male and absent in female (1 2/0 2/0 1).
description: Published as part of Abo-Shnaf, Reham I. A. & Allam, Sally F. M., 2019, A new species of Centrouropoda (Acari: Uropodidae: Uropodina), with a key to the world species of the genus, pp. 501-516 in Zootaxa 4706 (4) on pages 502-512, DOI: 10.11646/zootaxa.4706.4.1, http://zenodo.org/record/3616793