Goodeniacarus wondul, Beard & Seeman, 2025

Beard, Jennifer J. & Seeman, Owen D., 2025, Two new genera and six new species of flat mites (Prostigmata: Tenuipalpidae) from Goodeniaceae (Asterales) in Australia, Zootaxa 5637 (2), pp. 201-259 : 243-250

publication ID

https://doi.org/10.11646/zootaxa.5637.2.1

publication LSID

lsid:zoobank.org:pub:D067874C-A450-4BC5-9029-5A9C1FA344F6

DOI

https://doi.org/10.5281/zenodo.15562354

persistent identifier

https://treatment.plazi.org/id/03F8C565-8036-A036-A7A1-FF65FD33FC24

treatment provided by

Plazi

scientific name

Goodeniacarus wondul
status

sp. nov.

Goodeniacarus wondul sp. nov. Beard & Seeman

( Figs 37–42 View FIGURE 37 View FIGURE 38 View FIGURE 39 )

Types. Holotype. Female, Australia, Wondul Stock Route, 36 km north of Inglewood, Queensland, 28°06’41’’ S 151°04’39” E, ex. Goodenia glabra R. Br. ( Goodeniaceae ), 10.xii.2001, J.J. Beard and P.I. Forster (UQIC87363; paratype female on same slide). Paratypes. 4 females, 4 males, deutonymph, protonymph, same data as holotype (UQIC87365, 87369). All material in QM.

Diagnosis. Female. Dorsal ornamentation fine, irregular reticulation, becoming weaker and smoother on medial prodorsum and anteromedial opisthosoma; dorsal setae length 5–9. Setae g 1 in transverse line with g2, or slightly posterior to g2. Setae ps2 and ps3 short, ps2 tapered, ps3 tapered blunt, lengths ps2 6–7, ps3 6–8. Femora I with seta bv″ long, tapered; femur II with seta bv″ shorter, tapered blunt; femora IV with 1 seta (ev′ present, d absent; companion seta ftʺ longer than solenidion ωʺ. Blunt setae on legs: seta l′ on trochanter III; femur I–III d; genu I–II d, l″; tibia I l″; tibia IV d. Additional ambiguously blunt setae: tibia II d, l″; tibia III d. Blunt leg setae can have 1–2 minute barbs.

Description

Adult female. (5 measured)

Dorsum. ( Fig. 37 View FIGURE 37 ) Body measurements: v2–h1 190–200 [194], sc2–sc2 111–117 [113], c3–c3 112–123 [112], f3–f3 66–75 [70]. Prodorsal and opisthosomal shields weakly developed. Prodorsum with fine irregular reticulation and plicae becoming smoother centrally; anterior margin of prodorsum with small median forked projection forming a notch (5–8); with at least single pair minute pores mesad eyes (can be difficult to see). Opisthosoma with fine irregular reticulation; with broad band of sclerotised cuticle around opisthosomal shield margin, with series of strong transverse plicae; with 3 pairs of large pores—just mesad seta c3, mesad d3, and posteromesad d3; with at least 3 pairs minute pores (can be difficult to see). Dorsal setae all short, fine, smooth, blunt (n.b. one female with c1, c3, d3 tapered blunt and apparently with 1–2 barbs). Setal measurements: v2 6–7 [7], sc1 7–9 [8–9], sc2 8–9 [8], c1 7–9 [7], c3 6–8 [6–7], d1 6–8 [6], d3 7–8 [7], e3 5 –8 [6–7], f3 6–8 [6], h1 6–7 [6].

Infracapitulum. ( Fig. 37 View FIGURE 37 ) Dorsal cuticle with fine longitudinal to oblique plicae; ventral cuticle smooth centrally with fine oblique striae laterally; infracapitular setae m (13–14) [13]. Palp tarsus phaneres (1–2 and 8–9); femur-genu-tibia with single barbed dorsal seta (13–15) [14].

Venter. ( Fig. 38 View FIGURE 38 ) Ventral cuticle with few fine longitudinal plicae between setae 1b–1a and longitudinal to oblique plicae on coxae I–II; with transverse plicae between setae 1a to just posterior to 3a; with region of sparse broadly U-shaped plicae anterior to 4a–4a; with fine arching plicae between 4a–ag; genital region flanked by widely spaced longitudinal plicae; genital flap with irregular plicae between ag and genital setae. Setae g1 and g2 inserted in almost transverse row along posterior margin of genital flap. Most ventral setae short, fine, smooth, except setae 1a, 4a elongate, fine (often broken). Setal measurements: 1a 68–81 [68–77], 1b 20–27 [21], 1c 15–18 [15], 2b 20–23 [21], 2c 17–19 [17], 3a 17–22 [17], 3b 17–18 [17], 4a 64–67 [-], 4b 19–21 [21], ag 10–14 [12–13], g1 10–13 [10], g2 11–13 [12], ps2 6–7 [6], ps3 6–8 [8].

Spermathecal apparatus. A moderately short membranous duct terminating in small bulb; basal half much broader than distal half, with a slightly enlarged bulb midway, and granulate texture basally.

Legs. ( Fig. 39 View FIGURE 39 ) See genus Diagnosis for full setal formulae for legs I IV , except femur IV with 1 seta (ev′ present, d absent). See description of type species, G. rosulatus sp. nov., for full leg chaetotaxy. Tarsi I and II each with one abaxial solenidion ωʺ (6–7 [6], 6–7 [6], respectively); barbed companion seta ftʺ (10–11 [11], 10–12 [11], respectively) longer than solenidion; pair of prorals p′ζ, pʺζ inserted on minute cuneiform tubercles (both 9–10). Solenidia inserted on small tubercles. Some leg setae blunt and of similar form to dorsal idiosomal setae (except with minute barbs)—seta l′ on trochanter III ; seta d on femora I– III ; d, l″ on genua I–II; seta l″ on tibiae I– II and d on tibiae III– IV .

Adult male. (4 measured)

Dorsum. ( Fig. 40) Body measurements: v2–h1 128–137, sc2–sc2 81–88, c3–c3 85–88, f3–f3 51–55. Prodorsum somewhat similar to female, with fine irregular mostly longitudinal plicae and weak rugose elements, becoming smoother centrally; anterior margin with small median forked projection forming a notch (4–5); with up to 4 pairs of minute pores sublaterally (can be difficult to see). Dorsal opisthosoma divided into mesonotal and pygidial shields; mesonotal shield captures setal pairs c1–c3 and d1–d3; pygidial shield posterior to D row setae with few arching and oblique plicae anteriorly becoming mostly smooth posteriorly; with 2 pairs large pores—mesad setae c3, and just anteromesad e3; with up to 4 pairs minute pores (can be difficult to see). Dorsal setae as in female, all short, smooth, fine, blunt (some setae appear to have 1–2 minute barbs). Setal measurements: v2 6–8, sc1 6–9, sc2 6–8, c1 6–7, c3 6–8, d1 7, d3 6–7, e3 6 –7, f3 6–7, h1 7.

Infracapitulum. ( Figs 40, 41A View FIGURE 41 ) Dorsal cuticle with fine longitudinal plicae, ventral cuticle appears smooth; infracapitular setae m (8–11). Palp tarsus phaneres (1–2 and 7–8); femur-genu-tibia with single barbed dorsal seta (12).

Venter. ( Fig. 41A, B View FIGURE 41 ) Ventral cuticle with fine longitudinal plicae between 1b–1a; transverse to oblique plicae on coxae I–II; fine transverse plicae from 1a–3a; with region of broadly V-shaped plicae anterior to 4a–4a; with band of fine transverse plicae 4a–ag, and with few weak transverse plicae ag –genital region; genital region often concealed under fold of cuticle ( Fig. 41A, B View FIGURE 41 ), genital setae and anogenital opening flanked by plicae arching around region anteriorly. Setae g1 inserted just anterior to g2 on anterior margin of anogenital opening; valves with fine longitudinal plicae; pair of large pores laterad anal opening ( Fig. 41A, B View FIGURE 41 ). Most ventral setae short, fine, smooth or with few minute barbs; except setae 1a and 4a elongate, fine, and often broken. Setae ps3 modified into short, thick and weakly clavate accessory genital stylets, often obscured under posterior projections of anogenital opening. Setal measurements: 1a 52–66, 1b 14–16, 1c 11–14, 2b 12–17, 2c 13–17, 3a 11–14, 3b 12–20, 4a 35–39, 4b 15–20, ag 10–12, g1 10–13, g2 11–13, ps2 6–8, ps3 6–7.

Aedeagus. ( Fig. 41C View FIGURE 41 ) Sclerotised, elongate subulate (55–56), with narrow membranous tube emerging from sclerotised section.

Legs. ( Fig. 42 View FIGURE 42 ) Setal formulae and chaetotaxy same as adult female except ta I–II with solenidion ω′ also present. Tarsi I and II each with two solenidia (ta I adaxial ω′ 8–9, abaxial ωʺ 6–7; ta II adaxial ω′ 8–9, abaxial ωʺ 6–7); companion seta ftʺ barbed (both 7–8); pair of prorals p′ζ, pʺζ inserted on minute cuneiform tubercles (both 7–8). Form of leg setae similar to that of female, except setae l″ on ge II and ti II tapered (not blunt).

Deutonymph. (1 measured)

Dorsum. Body measurements: v2–h1 126, sc2–sc2 86, c3–c3 89, f3–f3 42. Prodorsal and opisthosomal shields weakly developed. Prodorsum finely punctate with rounded central region indicated by folds; anterior margin of prodorsum smoothly rounded without median notch. Opisthosoma with broad weak plicae between c1–d1; pygidial shield finely punctate. Dorsal setae as in adults. Setal measurements: v2 3–5, sc1 4–6, sc2 4–5, c1 4–5, c3 3–4, d1 3–5, d3 3–4, e3 3 –5, f3 3–4, h1 3–4.

Infracapitulum. Cuticle as in adults; infracapitular setae m (7). Palp tarsus phaneres (1 and 6); femur-genu-tibia with single barbed dorsal seta (7).

Venter. Fine longitudinal plicae between 1b–1a; transverse plicae 1a–g1; longitudinal plicae surrounding genital region. Form of ventral setae as in adults. Setal measurements: 1a 44, 1b 14, 1c 10, 2b 12, 2c 10, 3a 8, 3b 9, 4a 21, 4b 8, ag 7, g1 6, ps2 3–4, ps3 3–4.

Legs. Setal formulae and chaetotaxy for legs I – IV same as adult female except trochanters 1-1-1-0. Tarsi I and II each with one abaxial solenidion ωʺ (both 4); barbed companion seta ftʺ (both 5–6); pair of prorals p′ζ, pʺζ (6–7).

Protonymph. (1 measured)

Dorsum. Body measurements: v2–h1 132, sc2–sc2 78, c3–c3 90, f3–f3 57. Prodorsum smooth, weak shield indicated with few strong longitudinal folds. Opisthosoma as in deutonymph. Setal measurements: v2 4–5, sc1 6, sc2 5, c1 5, c3 4, d1 4, d3 4, e3 3 –4, f3 3–4, h1 2–3.

Infracapitulum. Cuticle as in deutonymph. Palp tarsus phaneres (1 and 6); femur-genu-tibia with single barbed dorsal seta (7).

Venter. Ventral cuticle as in deutonymph. Setal measurements: 1a 48, 1b 10, 1c 10, 2c 9, 3a 10, 3b 11, ag 7, ps2 3, ps3 4.

Legs. Tarsi I and II each with one abaxial solenidion ωʺ (both 4); barbed companion seta ftʺ (both 6); pair of prorals p′ζ, pʺζ (both 5–6).

Colour. These mites were bright red when alive.

Host. Goodenia glabra R.Br. ( Goodeniaceae ).

Distribution. This mite is so far known only from Inglewood in southeast Queensland, Australia.

Etymology. This species is named for the collection site, along the Wondul Stock Route.

Remarks. Host plant identification made by Queensland Herbarium. Goodeniacarus wondul sp. nov. was collected only 1. 3 km from, and on the same host plant as, the new genus Inglacarus . The host Goodenia glabra is an annual or perennial plant that grows after rain in sandy loamy soils in the drier inland parts of Australia, and yet this ephemeral resource is significant for these mites.

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"Alexandru Ioan Cuza" University

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