Cyperacarus naomae, Beard, Jennifer J. & Ochoa, Ronald, 2011

Beard, Jennifer J. & Ochoa, Ronald, 2011, New flat mite genera (Acari: Trombidiformes: Tenuipalpidae) associated with Australian sedges (Cyperaceae), Zootaxa 2941, pp. 1-37: 19-29

publication ID

http://doi.org/ 10.5281/zenodo.204686

DOI

http://doi.org/10.5281/zenodo.5612530

persistent identifier

http://treatment.plazi.org/id/0A68182D-FF91-F87B-FF39-FAE4ECD3FA5D

treatment provided by

Plazi

scientific name

Cyperacarus naomae
status

sp. nov.

Cyperacarus naomae   sp. nov. Beard & Ochoa

( Figs 1 View FIGURE 1 c, 12–19)

Types. Holotype. Ƥ. Australia, Queensland, Windsor Tableland Forest Reserve, Far North Queensland, 16 ° 13 ’ 56 ” S 145 °00’ 26 ” E, 11.v. 2005, ex. red-fruited saw sedge Gahnia sieberiana Kunth.   ( Cyperaceae   ) ( BRI voucher PIF 30943 View Materials ), J.J. Beard (QM, UQIC # 88927). Paratypes. 5 Ƥ, 3 3, 3 deutonymphs, protonymph, 5 larvae, same data as Holotype (QM, separate slides); Ƥ, 2 3, 4 deutonymphs, 3 protonymphs, Forest Reserve 607, track to Kahlpahlim Rock, Lamb Range, Far North Queensland, 17 ° 34 ’ 24 ” S 145 ° 37 ’ 29 ” E, 09.iv. 2005, ex. red-fruited saw sedge Gahnia sieberiana   ( Cyperaceae   ) ( BRI voucher PIF 30639 View Materials ), J.J. Beard (separate slides; QM); 3, protonymph (same slide); 2 Ƥ (same slide) (QM). (QM #: Ƥ 88919 View Materials , 88923, 88927 – 29, 89041; 2 Ƥ 88940 View Materials ; 3 88907, 88938, 88936, 89045 – 46; DN 88942, 88949, 88952, 89047 – 49; PN 88957, 89050, 89052, no number; larvae 88910 – 11, 88944 – 45, 88948).

Diagnosis. Adult female ( Figs 1 View FIGURE 1 c, 12–13). As per genus, in addition to: setae c 1 short, thick, barbed; setae d 1 short to minute, barbed; male with dorsal setae sc 1 not elongate, subequal in length with setae v 2.

Immatures ( Figs 16–19 View FIGURE 16 View FIGURE 17 View FIGURE 18 View FIGURE 19 ). Larva with posterior opisthosomal setae d 1, e 3 and h 1 minute, setae f 2 short. Protonymph with posterior opisthosomal setae d 1, e 3 and h 1 minute, setae f 2 similar to other dorsal setae. Deutonymph with posterior opisthosomal setae d 1 and h 1 minute, setae e 3, f 2 similar to other dorsal setae.

Adult female. (9 measured).

Dorsum. ( Figs 1 View FIGURE 1 c, 12) Body measurements: v 2 –h 1 265 – 301, sc 2 –sc 2 91 – 102, c 3 –c 3 106 – 122, f 2 –f 2 58 – 63. Dorsal cuticle mostly smooth, with some minor transverse grooves and plicae between setae sc 2 and c 1. A dorsal shield or dorsal thickening is evident, marked laterally by a change in cuticle. Anterior margin of prodorsum with three projections, one large rounded central and two smaller lateral projections, on which setae v 2 are inserted (on antiaxial margin of projections). Setae sc 1, c 3, d 3, e 3, f 2 inserted on large rounded tubercles. Setae sc 1 thick, elongate, barbed; c 1 short, bushy; d 1, h 1 minute, barbed; h 2 elongate, barbed with minute distal club; all other dorsal setae broad, thick, dorsoventrally flattened, with strong lateral barbs; dorsal surface of setae finely spiculate ( Fig. 12 View FIGURE 12 , detail), ventral surface smooth, with a median keel: v 2 22 – 30 [26], sc 1 192 – 216 [198 – 200], sc 2 33 – 42 [33 – 35], c 1 9 – 14 [10 – 11], c 3 34 – 41 [35 – 38], d 1 3 – 6 [6], d 3 34 – 42 [36 – 42], e 3 36 – 41 [38 – 40], f 2 34 – 41 [34 – 40], h 1 3 – 7 [5], h 2 156 – 190 [156 – 167].

Gnathosoma   . ( Fig. 12 View FIGURE 12 ) Gnathosoma   extends to distal margin of genu I. Dorsal cuticle with longitudinal plicae; ventral cuticle finely papillate with some transverse striae anterior to setae 1 b. Ventral setae m absent. Palps with three segments; formula 0, 2, 0(2); tibia with two setae (d 13 – 14, v 9 – 11); tarsus with two eupathidia (8 – 9; 4 – 5). Cheliceral stylets 109 – 116.

Venter. ( Fig. 13 View FIGURE 13 ) Cuticle completely plicate, covered with fine, mostly transverse plicae, between setae 1 a–g 2; some anterior longitudinal plicae between setae 1 b– 1 a; plicae longitudinal and oblique laterad genital flap, becoming transverse anterior to genital flap. Setae g 1 inserted in an anterior position to g 2 on genital flap. All setae fine, smooth; setae 1 a, 1 b, 4 a 1, 4a2 elongate, fine (difficult to consistently determine full length). Setal measurements: 1a 63 * – 119 [119], 1 b 62 – 84 [64], 2 b 18 – 34 [32], 2 c 15 – 26 [22], 3a 18 – 29 [25], 3 b 22 – 30 [24], 4 a 1 37 * – 103 [62 – 81], 4 a 2 40 * – 88 [60 – 83], 4 b 18 – 28 [23], ag 18 – 21 [21], g 1 17 – 25 [20], g 2 15 – 25 [25], ps 1 11 – 16 [11], ps 2 13 – 19 [13] (* = broken).

Spermatheca. ( Fig. 13 View FIGURE 13 ) An elongate, cylindrical vesicle (15 – 18) [16].

Legs. ( Figs 12 View FIGURE 12 , 13 View FIGURE 13 ) Setal formulae for legs I – IV: 1 - 0-3 - 0-5 - 7 (1), 2 - 0-3 - 0-5 - 7 (1), 1 - 0-2 - 0-3 - 3, 1 - 0-2 - 0-3 - 3 respectively. Tarsi I and II each with one antiaxial solenidion ω ” (5 – 7, 4 – 5 respectively) and two distal eupathidia p ζ ’-p ζ ” (7 – 8, 6 – 7; 6 – 8, 6 respectively); ta I – IV u’-u” asymmetrically barbed. Femur I with long, barbed dorsal seta (24 – 34).

Colour. This species is yellow to orange with small black spots internally (presumably food in gut).

Adult male. (6 measured).

Dorsum. ( Fig. 14) Body measurements: v 2 –h 1 217 – 221, sc 2 –sc 2 90 – 93, c 3 –c 3 107 – 108, f 2 –f 2 55 – 56. Dorsal cuticle mostly smooth. Three dorsal shields evident. Setae c 3, d 3, e 3, f 2 inserted on tubercles. Setae sc 1 not elongate; d 1, h 1 short, barbed; h 2 elongate, barbed with minute distal club; all other dorsal setae thick, dorsoventrally flattened, with strong lateral barbs; dorsal surface finely spiculate, ventral surface smooth. Setal measurements: v 2 40 – 49, sc 1 32 – 47, sc 2 35 – 41, c 1 11 – 20, c 3 28 – 38, d 1 6 – 12, d 3 35 – 41, e 3 36 – 46, f 2 37 – 43, h 1 3 – 8, h 2 163 – 194.

Gnathosoma   . ( Fig. 14) Gnathosoma   extends to distal end of femur leg I. Ventral cuticle finely papillate with some transverse plicae anterior to setae 1 b. Ventral setae m absent. Palps with three segments; formula 0, 2, 0(2); tarsus with two eupathidia (4 – 7; 6 – 8); tibia with two setae (d 12 – 14, v 9 – 10). Cheliceral stylets 85 – 87.

Venter. ( Fig. 15 View FIGURE 15 ) Cuticle completely plicate, covered with fine, mostly transverse, plicae; plicae longitudinal between setae 1 b– 1 a, transverse between 1 a– 4 a 2; band of strong plicae and striae between 4 a 1 –ag posterad level with coxae IV; transverse plicae posterior to g 1 –g 2 becoming longitudinal lateral to ps 1–2 around anal opening. Setae ps 1 modified to short thick spurs. All setae fine; setae 1 a, 1 b, 4 a 1, 4a2 elongate (difficult to consistently determine full length). Setal measurements: 1a 63 – 109, 1 b 46 – 84, 2 b 19 – 33, 2 c 18 – 24, 3 a 20 – 29, 3 b 19 – 25, 4 a 1 64 – 86, 4 a 2 49 – 69, 4 b 15 – 24, ag 14 – 23, g 1 12 – 24, g 2 11 – 20, ps 1 6 – 9, ps 2 9 – 14.

Aedeagus. ( Fig. 15 View FIGURE 15 ) Sclerotised, elongate arrow-head shaped organ (31 – 35) with a narrow membranous tube, widened into funnel-shape distally (11 long, 10 wide), opening into a membranous vesicle.

Legs. ( Fig. 14) Setal formulae same as female except additions v’ on trI, l’ fe I and ω’ on taI – IV: 1 - 1-4 - 0-5 - 8 (2), 2 - 0-3 - 0-5 - 8 (2), 1 - 0-2 - 0-3 - 4 (1), 1 - 0-2 - 0-3 - 4 (1) respectively. Tarsi I and II each with two solenidion (ta I paraxial ω ’ 10 – 12, antiaxial ω ” 7 – 9; ta II paraxial ω ’ 8 – 10, antiaxial ω ” 6 – 9) and two distal eupathidia p ζ ’-p ζ ” (6 – 7, 6 – 7; 5 – 6, 6 – 7 respectively); tarsi III and IV each with one paraxial solenidion ω ’ (9 – 10; 10 – 11 respectively); ta I – IV u’-u” asymmetrically barbed. Femur I with long, barbed dorsal seta (59 – 70).

Deutonymph. (7 measured)

Dorsum. ( Figs 16 View FIGURE 16 , 17 View FIGURE 17 ) Body measurements: v 2 –h 1 199 – 231, sc 2 –sc 2 73 – 86, c 3 –c 3 90 – 103, f 2 –f 2 42 – 51. Cuticle mostly smooth with some transverse plicae between setae sc 2 –c 3. Projections on anterior margin of propodosoma absent ( Fig. 16 View FIGURE 16 ) or present ( Fig. 17 View FIGURE 17 ). Central tubercles with setal pairs c 1 and d 1 vestigial ( Fig. 16 View FIGURE 16 ) or developed ( Fig. 17 View FIGURE 17 ). Setae sc 1 elongate, barbed; d 1, h 1 minute; setae h 2 elongate, barbed, with minute club; all other setae thick, dorsoventrally flattened, strongly barbed; dorsal surface finely spiculate, ventral surface smooth. Setal measurements: v 2 15 – 19, sc 1 140 – 172, sc 2 27 – 33, c 1 15 – 23, c 3 24 – 29, d 1 4 – 5, d 3 24 – 29, e 3 21 – 29, f 2 25 – 29, h 1 2 – 4, h 2 118 – 151.

Gnathosoma   . ( Fig. 16 View FIGURE 16 ) Gnathosoma   extends to distal margin genu leg I. Ventral cuticle finely papillate. Ventral setae m absent. Palps with three segments; formula 0, 2, 0(2); tibia with two setae (d 11 – 12, v 9 – 10); tarsus with two eupathidia (6 – 7, 2 – 4). Cheliceral stylets 84 – 95.

Venter. Cuticle completely plicate, covered mostly with transverse striae; plicae longitudinal between setae 1 b– 1 a, transverse 1 a–g 1 with some mixed plicae anterior to 3 a; plicae oblique g 1 –ps 2. All ventral setae fine; setae 1 a, 1 b, 4 a 1, 4a2 elongate (difficult to determine full length). Setal measurements: 1a 68 – 91, 1 b 36 – 46, 2 b 10 – 16, 2 c 12 – 18, 3 a 12 – 18, 3 b 11 – 15, 4 a 1 36 – 60, 4 b 10 – 15, ag 7 – 10, g 1 6 – 10, ps 1 6 – 8, ps 2 8 – 11.

Legs. ( Fig. 16 View FIGURE 16 ) Setal formulae same as female, and same as protonymph except additions cx II 2 c, cx IV 4 b: 1 - 0-3 - 0-5 - 7 (1), 2 - 0-3 - 0-5 - 7 (1), 1 - 0-2 - 0-3 - 3, 1 - 0-2 - 0-3 - 3 respectively. Tarsi I and II each with one antiaxial solenidion ω ” (3 – 4; 3 respectively) and two distal eupathidia p ζ ’-p ζ ” (4 – 6, 4 – 6; 4 – 6, 4 – 6 respectively); ta I – IV u’-u” asymmetrically barbed. Femur I with long, barbed dorsal seta (24 – 32).

Protonymph. (4 measured).

Dorsum. ( Fig. 18 View FIGURE 18 ) Body measurements: v 2 –h 1 180, sc 2 –sc 2 69, c 3 –c 3 66, f 2 –f 2 29. Cuticle with smooth area anteriorly on prodorsum and posteriorly between setae d 1 –h 1; strong transverse plicae between setae sc 2 –d 1. Dorsum with 2 central seta-bearing tubercles — anterior tubercle with setal pair c 1, posterior tubercle with setal pair d 1. Setae sc 1 elongate, barbed; v 2, e 3 short; setae d 1, h 1 minute; h 2 elongate, barbed, with minute club; all other setae thick, strongly barbed: v 2 9 – 12, sc 1 120 – 127, sc 2 23 – 33, c 1 21 – 28, c 3 23 – 27, d 1 3 – 4, d 3 23 – 28, e 3 5 – 16, f 2 19 – 26, h 1 2 – 3, h 2 76 – 116.

Gnathosoma   . ( Fig. 18 View FIGURE 18 ) Gnathosoma   extends to tibia leg I. Ventral setae m absent. Palps with three segmented; formula 0, 2, 0(2); tibia with two setae (d 8, v 7); tarsus with two eupathidia (6, 3). Cheliceral stylets 78.

Venter. Cuticle completely plicate, mostly covered with transverse striae; plicae longitudinal between setae 1 b– 1 a, transverse 1 a–ag with some mixed plicae anterior to 3 a; plicae oblique laterad ps 1–2, mixed between ag–ps 2. Setae fine; setae 1 a, 1 b elongate (difficult to determine full length). Setal measurements: 1a 31 – 74, 1 b 25 – 47, 2 c 10 – 14, 3 a 11 – 18, 3 b 10 – 12, ag 3 – 9, ps 1 3 – 5, ps 2 3 – 4.

Legs. ( Fig. 18 View FIGURE 18 ) Setal formulae for legs I – IV: 1 - 0-3 - 0-5 - 7 (1), 1 - 0-3 - 0-5 - 7 (1), 1 - 0-2 - 0-3 - 3, 0- 0-2 - 0-3 - 3 respectively. Tarsi I and II each with one antiaxial solenidion ω ” (2 – 3, 2 – 3 respectively) and two distal eupathidia p ζ ’- p ζ ” (5, 5; 4 – 5, 4 – 5 respectively); ta I – IV u’-u” asymmetrically barbed. Femur I with long, barbed dorsal seta (12).

Larva. Dorsum. ( Fig. 19 View FIGURE 19 ) Body measurements: v 2 –h 1 135 – 136, sc 2 –sc 2 57 – 58, c 3 –c 3 66 – 69, e 3 – e 3 28 – 29. Cuticle entirely plicate with mostly transverse plicae, some longitudinal plicae on prodorsum. Dorsum with three rounded tubercles aligned medially - anterior tubercle without setae; setae c 1 inserted together on central tubercle; setae d 1 inserted together on posterior tubercle. Setae sc 1 elongate, barbed; v 2, f 2 short; setae d 1, e 3, h 1 minute; h 2 elongate, barbed; all other setae thick, strongly barbed: v 2 4 – 7, sc 1 53 – 68, sc 2 24 – 34, c 1 38 – 43, c 3 31 – 38, d 1 3 – 4, d 3 32 – 38, e 3 3 – 4, f 2 7 – 9, h 1 1 – 3, h 2 92 – 138.

Gnathosoma   . ( Fig. 19 View FIGURE 19 ) Gnathosoma   extends beyond proximal margin of genu I. Ventral setae m absent. Palps with three segments; formula 0, 2, 0(1); tibia with two setae (d 9, v 7); tarsus with one eupathidion (6). Cheliceral stylets 68 – 74.

Venter. Plicae on cuticle fine, difficult to see, mostly transverse with longitudinal plicae between setae 1 b– 1 a. Setal measurements: 1a 38 – 77, 1 b 16 – 31, 3 a 8 – 16, ps 1 3 – 4, ps 2 3 – 4.

Legs. ( Fig. 19 View FIGURE 19 ) Setal formulae for legs I – IV: 1 - 0-3 - 0-5 - 6 (1), 0- 0-3 - 0-5 - 6 (1), 0- 0-2 - 0-3 - 3 respectively. Tarsi I and II each with one short antiaxial solenidion ω ” (2, 2 respectively) and two distal eupathidia p ζ ’-p ζ ” (4 – 5, 5; 4, 4 respectively); ta I – IV u’-u” asymmetrically barbed. Femur I with long, barbed dorsal seta (11).

Host. Red-fruited saw sedge, Gahnia sieberiana   ( Cyperaceae   ).

Distribution. Windsor Tableland and Lamb Range, Far North Queensland.

Remarks. Two adult female specimens have abnormally elongate dorsal setae e 3, 41 – 76 compared with 36 – 41. The larval and protonymphal leg chaetotaxy of this species match that of G. gersonus   and G. tuberculatus   . However the deutonymph differs in that no setae are added to the trochanters (whereas v’ is added to tr I – III in G. gersonus   and G. tuberculatus   ). The leg chaetotaxy of the adult female matches that of the deutonymph, i.e. there are no additions (whereas v’ is added to tr IV in G. gersonus   , G. tuberculatus   ). Like male G. tuberculatus   (male G. gersonus   not known), v’ is added to tr I and solenidion ω ’ is added to all tarsi of male C. naomae   . species name in italics; however this species differs in also adding l’ to fe I.

The ventral grooves on the leaf blades of the host plant are shallow. Mites were more commonly found at the tip of the blade than elsewhere on the blade. At the tip of the blade the leaf curls over on itself forming a tube and the longitudinal grooves are slightly wider and appear to be slightly deeper. Mites were more common on outer leaf blades than on the inner unfurled leaves.

Etymology. This species is named in loving memory of Naomi Armstrong-Beard.

†genua IV nude in original description ( Meyer 1979), genua IV with one seta in Mesa et al. (2009).

BRI

Queensland Herbarium

UQIC

University of Queensland Insect Collection