Goodeniacarus rosulatus Beard & Seeman, 2025, sp. nov.

Goodeniacarus rosulatus sp. nov. Beard & Seeman (Figs 16–25) Types. Holotype. Female, Australia, Rungulla National Park, 37. 3 km SSE ranger station and airstrip, Queensland, 19°28’00’’S 143°31’33”E, ex. Goodenia rosulata Domin. (Goodeniaceae), 08.v.2022, J.J. Beard (QM). Paratypes. 16 females, 5 males, 4 deutonymphs, 3 protonymphs, 3 larvae, same data as holotype (QM). Other material examined. 6 females, 1 male (pharate), 4 deutonymphs, 1 protonymph, same data as holotype (QM). Diagnosis. Female. Prodorsal ornamentation weaky reticulate, becoming weak and irregular medially and laterally; opisthosomal ornamentation reticulate, becoming weak laterally; dorsal setae length 4–9. Setae g1 positioned just anterior to g2. Setae ps2 and ps3 slender, tapered, lengths ps2 7–10, ps3 5–9 (sometimes with a blunt tip). Femora I with setae bv″ long, tapered to fine tip; femora II with bv″ shorter, blunt; femora IV with 2 seta (ev′, d present; companion seta ftʺ much longer than solenidion ωʺ. Blunt setae present on femora and tibiae: femur I–IV d, femur II bv″; genu I–II d, l″; tibia I–II l″; tibia III–IV d. All blunt setae with minute barbs. Description Adult female. (14 measured) Dorsum. (Fig. 16) Body measurements: v2–h1 187–213 [193], sc2–sc2 121–140 [128], c3–c3 119–139 [128], f3–f3 62–81 [72]. Prodorsal and opisthosomal shields weakly developed. Prodorsum with reticulate cuticle becoming weak and irregular medially and laterally; with shallow longitudinal sublateral furrows; anterior margin with small median forked projection forming a notch (5–10) [8]; with up to 4 pairs of minute pores visible sublaterally. Opisthosoma with stronger reticulation over large central region, becoming weak and irregular medially and laterally; with 3 pairs of large pores—mesad setae c3, mesad d3, and posteromesad d3; with up to 3 pairs minute pores (can be difficult to see). Dorsal setae all short, fine, blunt. Setal measurements: v2 6–8 [7], sc1 5–9 [5–6], sc2 6–9 [6], c1 5–8 [5], c3 5–7 [5], d1 4–7 [5], d3 5–6 [5], e3 5 –7 [5], f3 5–7 [5], h1 5–7 [5]. Infracapitulum. (Figs 16, 17A–B) Cuticle on dorsal infracapitulum with fine longitudinal plicae; infracapitular setae m (13–18) [14]. Palp tarsus phaneres (2 and 8–9); femur-genu-tibia with single barbed dorsal seta (12–14) (Fig. 17A–B). Venter. (Fig. 18) Ventral cuticle with fine longitudinal plicae between setae 1b–1a and longitudinal to oblique on coxae I–II; with widely spaced transverse plicae between setae 1a–3a; with small region of broadly U-shaped plicae anterior to 4a–4a; with fine arching plicae demarking anterior margin of genital flap; genital region flanked by widely spaced longitudinal plicae. Setae g1 inserted just anterior to g2 on genital flap. Most ventral setae short, fine, smooth or minutely barbed (difficult to see); except setae 1a and 4a elongate, fine, and often broken. Setae ps2, ps3 slender, tapered; ps3 often obscured within lateral folds of genital opening, sometimes with minutely blunt tip. Pair of large, round pores often visible in soft cuticle laterad anus. Setal measurements: 1a 64–86 [73–83], 1b 15–29 [20–24], 1c 15–22 [17], 2b 15–23 [18], 2c 18–24 [21], 3a 14–19 [13–15], 3b 18–21 [18], 4a 56–76 [61–66], 4b 13–17 [15], ag 13–21 [21], g1 10–12 [10–11], g2 10–13 [12], ps2 7–10 [7], ps3 5–9 [6]. Spermathecal apparatus. (Fig. 17C) A moderately short membranous duct with a broader bulb midway, and narrower distal portion with a granulate texture, terminating in a small, rounded vesicle. Legs. (Fig. 19) See genus Diagnosis for full leg setal formulae. Chaetotaxy for legs I – IV: cx I 1b, 1c; cx II 2b, 2c; cx III 3c; cx IV 4b; tr I–II, IV v′, tr III l′, v′; fe I–II d, l′, v′, bvʺ; fe III–IV d, ev′; ge I–II d, l′–lʺ, ge III–IV nude; ti I–II d, l′, lʺ, v′, vʺ; ti III–IV d, v′, vʺ; ta I–II ft′, ftʺ, tc′, tc″, p′ζ, pʺζ, u′, uʺ, ωʺ; ta III–IV ft′, tc′, tcʺ, u′, uʺ. Tarsi I and II each with one abaxial solenidion ωʺ (5–7 [5], 4–6 [5], respectively); barbed companion seta ftʺ much longer than solenidion (10–13 [10], 9–12 [10], respectively); pair of prorals p′ζ, pʺζ inserted on minute cuneiform tubercles (both 8–10). Solenidion and setae ft′, ftʺ 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–IV, bv″ on femur II; seta d on genua I–II, tibiae III–IV; and seta lʺ on genua I–II and tibiae I–II. Adult male. (4 measured) Dorsum. (Fig. 20) Body measurements: v2–h1 144–148, sc2–sc2 96–104, c3–c3 91–100, f3–f3 47–51. Prodorsum with weakly developed irregular reticulation and folds sublaterally, with smooth central region and becoming smooth laterally; anterior margin of prodorsum with small median forked projection forming a notch (4–7); with at least 2 pairs of minute pores sublaterally (can be difficult to see). Dorsal opisthosoma with pair of weakly developed metanotal shields indicated between setal pairs c1–c3 and d1–d3; and posterior to D row setae with few oblique plicae from e3–f3 to central smooth region. Dorsal opisthosoma divided into mesonotal and pygidial shields; with at least 2 pairs large pores visible—mesad c3, anteromesad e3; with at least 3 pairs minute pores (can be difficult to see). Dorsal setae as in female, all short, fine, blunt. Setal measurements: v2 5–6, sc1 6–7, sc2 6–7, c1 5–8, c3 4–6, d1 5–6, d3 4–6, e3 5 –6, f3 6–7, h1 5–6. Infracapitulum. (Fig. 20) Cuticle on dorsal infracapitulum with fine longitudinal plicae; infracapitular setae m (8–10). Palp tarsus phaneres (2 and 6–7); femur-genu-tibia with single barbed dorsal seta (9–11). Venter. (Fig. 21) Ventral cuticle with widely spaced transverse plicae from 1a–3a; with small region broadly U-shaped plicae anterior to 4a–4a between coxae III–IV; with band of fine transverse plicae 4a–ag, and with few weak transverse plicae ag –genital setae; genital region with few flanking plicae arching around region anteriorly. Setae g1 inserted just anterior to g2 on anterior margin of anogenital opening. Most ventral setae short, fine, smooth or minutely barbed (difficult to see); except setae 1a and 4a elongate, fine, and often broken. Setae ps3 modified into short, thick, clavate accessory genital stylets, often obscured under posterior projections of anogenital opening. Setal measurements: 1a 48–55, 1b 12–15, 1c 13–14, 2b 15–21, 2c 14–17, 3a 11–13, 3b 14–16, 4a 28–45, 4b 12–15, ag 9–14, g1 9–11, g2 11–12, ps2 6–8, ps3 5–6. Aedeagus. (Fig. 21) Sclerotised, elongate, subulate (57–58), with narrow membranous tube emerging from sclerotised section. Legs. (Fig. 22) Setal formulae and chaetotaxy same as adult female except ta I–II with solenidion ω′ also present; ω′ inserted somewhat proximally and partially concealed by strong transverse cuticular ridge across segment. Tarsi I and II each with two solenidia (ta I adaxial ω′ 7–9, abaxial ω″ 6–7; ta II adaxial ω′ 7–8, abaxial ω″ 5–6); companion seta ftʺ barbed (9–10, 6–9, respectively); pair of prorals p′ζ, pʺζ inserted on minute cuneiform tubercles (both 7–9). Form of leg setae similar to that of female. Deutonymph. (4 measured) Dorsum. Body measurements: v2–h1 168–188, sc2–sc2 112–118, c3–c3 117–121, f3–f3 47–51. Prodorsal and opisthosomal shields weakly developed, with smooth cuticle; anterior margin smoothly rounded without median notch. Dorsal opisthosoma with a few broad transverse striae. Dorsal setae form as in adults. Setal measurements: v2 3–4, sc1 3–4, sc2 3–4, c1 3–4, c3 3, d1 2–3, d3 2–3, e3 2 –3, f3 2–3, h1 2–3. Infracapitulum. Cuticle as in adults; infracapitular setae m (7–8). Palp tarsus phaneres (1–2 and 5–6); femur-genu-tibia with single barbed dorsal seta (8). Venter. (Fig. 23A) Widely spaced longitudinal plicae between 1b–1a, widely spaced transverse plicae 1a to just posterior 4a; plicae forming a triangle around setae ag with transverse plicae within triangle; with band of transverse plicae between ag–g1 and mixed plicae in genital region. Form of ventral setae as in adults. Setal measurements: 1a 55–72, 1b 10–12, 1c 8–10, 2b 10–12, 2c 11–14, 3a 7–10, 3b 7–12, 4a 27–32, 4b 8–12, ag 6–7, g1 4–5, ps2 2–3, ps3 2–4. Legs. (Fig. 23B) Setal formulae and chaetotaxy for legs I – IV same as adult female except tarsi 8(1)-8(1)-3-3 (seta tcʺ absent on ta I–II). In addition to G. rosulatus sp. nov., the deutonymph is known for G. reticulatus sp. nov., G. uri sp. nov. and G. wondul sp. nov., and these species all share trochanter III with only v′ present, and the addition of l′ being delayed to the adult stage. It should be noted, however, that seta l′ is inconsistently expressed on tr III in the deutonymph of G. rosulatus sp. nov. Of the 8 individual deutonymphs we examined, 2 had v′ symmetrically expressed (1 seta on both sides), 3had setae v′ and l′ on one side and only v′ on the other(l′ asymmetrically expressed), 3 specimens had only 1 trochanter III clearly visible and 2 of these had 1 seta present and 1 had 2 setae present.As the most common pattern was seta v′ only present, we consider the presence of seta l′ in the deutonymph to be an aberration. Tarsi I and II each with one abaxial solenidion ωʺ (both 3–4); barbed companion seta ftʺ (both 4–6); pair of prorals p′ζ, pʺζ (6–9, 6–7, respectively). Some leg setae short to minute, blunt—seta l′ on trochanter III, seta d on femora I–IV, genua I–II, tibiae III–IV, and seta lʺ on genua I–II and tibiae I–II. Protonymph. (2 measured) Dorsum. Body measurements: v2–h1 140–144, sc2–sc2 98–99, c3–c3 98–105, f3–f3 35–40. Prodorsal and opisthosomal shields weakly developed; prodorsum mostly smooth, with smoothly rounded anterior margin without median notch; dorsal opisthosoma with few broadly spaced transverse plicae. Dorsal setae form as in adults. Setal measurements: v2 3–4, sc1 3–4, sc2 4, c1 4–5, c3 3–4, d1 3–4, d3 3–4, e3 2 –3, f3 2–3, h1 2–3. Infracapitulum. Cuticle as in deutonymph; infracapitular setae m (5–6). Palp tarsus phaneres (1 and 5); femur-genu-tibia with single barbed do