Crossipalpus verticillatae Smiley, Frost and Gerson, 1996,

Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R., 2014, Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales), Zootaxa 3778 (1), pp. 1-157: 29-36

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http://dx.doi.org/10.11646/zootaxa.3778.1.1

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http://treatment.plazi.org/id/194C87D0-FFFA-FFF9-F387-FE0BFB1FF913

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Crossipalpus verticillatae Smiley, Frost and Gerson, 1996
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Crossipalpus verticillatae Smiley, Frost and Gerson, 1996 

( Figs 19–24View FIGURE 19View FIGURE 20View FIGURE 21View FIGURE 22View FIGURE 23View FIGURE 24)

Crossipalpus verticillatae Smiley, Frost and Gerson, 1996: 174  , figs 16–18.

Type material examined. Holotype female ex. Drooping She-Oak Allocasuarina verticillata  ( Casuarinaceae  ), AUSTRALIA: South Australia, 10 km WNW Nairne, 0 9 September 1995, coll. W.E. Frost ( WINC; 1 male paratype, deutonymph on same slide). Paratypes. 1 male, 1 deutonymph, same slide as holotype ( WINC); 1 female, same data as holotype ( WINC); 3 females, 1 male, and 1 deutonymph, ex. same host (tree # 258) [feeding on bark of branchlets], AUSTRALIA: South Australia, Glen Osmond, Waite Institute Arboretum, 11 January 1996, coll. W.E. Frost ( WINC; 1 slide); 1 female, 1 deutonymph, 4 protonymphs, and 3 larvae ex. same host [feeding on bark of branchlets], AUSTRALIA: South Australia, 8 km south of Harrogate, 34.57 S 139.01 E, 10 November 1995, W.E. Frost ( WINC; one slide); 1 pharate female, 1 male, 3 deutonymphs, and 1 protonymph, same data (except 5 km south of Harrogate) ( WINC; one slide).

Non-type material examined. 12 females, 1 male, 1 pharate male, 1 deutonymph, and 1 protonymph ex. A. verticillata  , AUSTRALIA: South Australia, Adelaide, Athelston, Maryvale Road, Wadmore Park, 34 ° 52 ’ 51 ” S 138 ° 42 ’09” E, 21 April 2009, coll. J.J. Beard and C.J. Burwell (QM, USNM) ( BRI voucher BRI [ AQ 818801View Materials]).

Diagnosis. Dorsal setae all broadly lanceolate, strongly barbed and subequal in length except c 1, d 1, e 1, h 1 distinctly short; prodorsal setae v 2 subequal in length with sc 1. Palpal segments as wide as long. Genua I –II with seta l′′, without d; tarsi I –IV without seta tc′′.

FEMALE (n = 18). Dorsum. ( Fig. 19View FIGURE 19 a) Body measurements: distance between setae v 2 -h 1 310–330 [330]; sc 2 - sc 2 105–110 [110]; other measurements: v 2 -v 2 20–25 [20], sc 1 -sc 1 87–93 [90], c 1 -c 1 15–25 [19], c 2 -c 2 120–130 [125], c 3 -c 3 140–150 [140], d 1 -d 1 17–19 [19], d 2 -d 2 95–105 [95], d 3 -d 3 120–130 [120], e 1 - e 1 13–25 [21], e 2 -e 2 110–115 [110], e 3 - e 3 98–105 [98], f 3 -f 3 78–89 [78], h 1 -h 1 12–19 [12], h 2 -h 2 52–61 [52]. Gnathosoma completely concealed beneath prodorsum; anterior margin of prodorsum rounded; setae v 2 often inserted ventrally under anterior margin of prodorsum (similar to Fig. 14View FIGURE 14). Prodorsal shield weakly developed with broadly separated longitudinal central folds and oblique lateral folds; cuticle with fine network of folds laterally. Narrow band of fine transverse striae anterior to c 1 -c 1. Opisthosoma with pair of weakly developed mesonotal shields capturing setae c 1, c 2, d 1, d 2; weakly developed pygidial shield capturing e 1, e 3, f 2–3 and h 1–2 setae, with weak oblique folds; band of transverse folds between d 1 -d 1 and e 1 -e 1; paired minute pores present between c 1 -c 2, d 1 -d 2, laterad e 1. Lateral cuticle surrounding shields wrinkled. Most dorsal setae broadly lanceolate and barbed; setae c 1, d 1, e 1, h 1 much shorter than other dorsal setae. Setal lengths: v 2 15–20 [15, 19], sc 1 17–20 [19, 20], sc 2 19–22 [21, 22], c 1 6–7 [6, 7], c 2 13–17 [13, 16], c 3 19–21 [19. 21], d 1 6–8 [7, 8], d 2 14–18 [14, 15], d 3 19–24 [20, 21], e 1 6 –8 [6, 7], e 2 17 –22 [20, 21], e 3 20 –23 [20, 21], f 3 20–22 [20, 22], h 1 7–10 [7, 8], h 2 19–22 [19, 22]. Palps. ( Fig. 19View FIGURE 19 b) Setal formula 0, 0, 0, 1, 3 (1 s+ 2 e). Tibial seta 8–10 [10] long; tarsal eupathidia 4–5 [5] long (thin, tapered), 5–6 [6] long (blunt); solenidion 5–6 [5]. Vent er. ( Fig. 20View FIGURE 20) Ventral cuticle of gnathosoma to setae 1 a transverse; striae longitudinal between 1 a- 1 a; striae between 1 a- 3 a transverse, between 3 a- 4 a longitudinal; transverse striae 4 a to just posterior 4 a, becoming longitudinal to g 1–2; longitudinal striae laterad genital region. Genital setae not widely separated (25), inserted in more-or-less transverse row, g 1 inserted slightly posterior to level of g 2. Genital shield weakly developed, cuticle on genital flap between g setae with longitudinal to oblique striae; anal setae ps 1–2 inserted in longitudinal line along inner edge of anal plates; seta ps 3 absent. Coxal, genital and anal setae fine and weakly barbed, except 2 c thicker and more strongly barbed; setae 1 a, 3 a, 4 a long, finely tapered, often broken and difficult to determine full length. Setal lengths: 1a 52 – 59 [54, 58], 1 b 22–25 [22, 24], 2 b 21–25 [22, 24], 2 c 15–19 [15, 16], 3a 45 – 68 [65, 68], 3 b 21–24 [21, 23], 4a 46 – 52 [48, 51], 4 b 20–24 [22, 24], ag 1 14–17 [14, 16], g 1 21–25 [22, 23], g 2 18–22 [20, 21], ps 1 12–13 [12, 13], ps 2 11–14 [11, 14]. Spermatheca. Spermatheca with a long coiled tube, with some granular texture along its length; tightly coiled and multi-branched distally. Distal vesicle not visible. Legs. ( Fig. 21View FIGURE 21) Setal formula for legs I –IV (coxae to tarsi) 1 - 1-3 - 1-4 - 8 (1), 2 - 1-3 - 1-4 - 8 (1), 1-2 - 2 - 0-3 - 4, 1 - 1 - 1 - 0-3 - 4. Tarsi I and II each with 1 antiaxial solenidion ω" (6–7 [6] long) and 2 eupathidia pζ'-pζ" (7–8 long). Leg setation as in Table 1 except: coxae I without 1 c; genua I –II with l", without d; tarsi I –IV without tc′′. Setae v' added to tr IV.

MALE (n = 5). Dorsum. ( Fig. 22View FIGURE 22) Body measurements: distance between setae v 2 -h 1 230–250, sc 2 -sc 2 87–91; other measurements: v 2 -v 2 12–18, sc 1 -sc 1 61–66, c 1 -c 1 14–21, c 2 -c 2 96–105, c 3 -c 3 110–117, d 1 -d 1 8–12, d 2 -d 2 74–79, d 3 -d 3 90–96, e 1 - e 1 11–13, e 2 - e 2 77–80, e 3 - e 3 74–77, f 3 -f 3 61–67, h 1 -h 1 6–10, h 2 -h 2 38–42. Gnathosoma fully exposed, not concealed by anterior margin of prodorsum ( Fig. 22View FIGURE 22). Four weak dorsal shields developed, separated by bands of transversely striate soft cuticle. Prodorsal shield similar to female. Mesonotal shield with 2 weak shields, weakly wrinkled or folded. Pygidial shield with weak longitudinal-oblique wrinkles or folds. Lateral cuticle surrounding shields with some weak papillae. Most dorsal setae short, lanceolate, barbed; setae c 1, d 1 and e 1 much smaller than other setae. Setal lengths: v 2 14–18, sc 1 13–15, sc 2 16–20, c 1 5–6, c 2 9–12, c 3 12–14, d 1 5– 7, d 2 9–13, d 3 13–15, e 1 5 –8, e 2 10 –15, e 3 14 –16, f 3 14–16, h 1 7, h 2 14–15. Palps. ( Fig. 22View FIGURE 22) Palps similar to female, except solenidion greatly swollen; solenidion 7–8 long, eupathidia 6–8 long (blunt), 5–6 long (thin, tapered). Venter. ( Fig. 23View FIGURE 23 a) Cuticle with mostly transverse striae, with band of broadly separated transverse folds just posterior to leg IV; broadly separated transverse folds between ag and g 1–2. Pair of large rounded, weakly developed shields laterad setae ag. Coxal setae fine. Setae 1 a, 3 a, 4 a elongate, finely tapered, often broken. Setae ag 1, g 1–2, ps 2 weakly barbed; setae ps 1 modified, obviously thicker and stronger than ps 2. Setal lengths: 1a 37 – 49, 1 b 16–22, 2 b 15–22, 2 c 15–20, 3 a 34–68, 3 b 16–23, 4 a 31–63, 4 b 13–21, ag 1 11–13, g 1 11–14, g 2 12–17, ps 1 15–17, ps 2 7–10. Aedeagus. ( Fig. 23View FIGURE 23 a) Narrow, sclerotised, finely tapered distally, 81–92. Membranous duct runs from inside aedeagus for about 40 then disappearing. Legs. ( Fig. 23View FIGURE 23 b) Legs similar to female, except solenidia obviously swollen. Tarsi I and II each with 1 antiaxial solenidion ω" (10–11 long) and 2 eupathidia pζ'-pζ" (7–9, 7 – 8 long).

DEUTONYMPH (n = 8). Dorsum. Body measurements: distance between setae v 2 -h 1 250–295, sc 2 -sc 2 84– 100; other measurements: v 2 -v 2 17–23, sc 1 -sc 1 70–87, c 1 -c 1 17–23, c 2 -c 2 91–112, c 3 -c 3 119–136, d 1 -d 1 15–22, d 2 -d 2 70–93, d 3 -d 3 86–106, e 1 - e 1 12–14, e 2 - e 2 79–99, e 3 - e 3 72–90, f 3 -f 3 65–76, h 1 -h 1 14–16, h 2 -h 2 41–52. Dorsal shields with patterns similar to adult female. Setal lengths: v 2 21–26, sc 1 17–22, sc 2 19–24, c 1 5–7, c 2 14– 19, c 3 16–22, d 1 5–6, d 2 16–21, d 3 18–22, e 1 5 –7, e 2 19 –25, e 3 20 –24, f 3 19–24, h 1 6–8, h 2 16–23. Palps. Palps same as adult. Tibial seta 8–9 long; tarsal eupathidia 4–5 long (thin, tapered), 5–7 long (thick, blunt); solenidion 3– 4 long. Venter. Cuticle with longitudinal striae between 1 a- 1 a; transverse striae between 1 a- 4 a, with mixed striae 4 a- 4 a; transverse striae just posterior to 4 a becoming longitudinal to setae g 1; transverse striae between g 1 -ps 1, with longitudinal striae laterad genital region. Coxal setae fine and finely barbed, except setae 2 c thicker and more heavily barbed. Setal lengths: 1a 31 – 52, 1 b 12–22, 2 b 12–21, 2 c 19–22, 3 a 32–57, 3 b 13–16, 4 a 20–42, 4 b 12–18, ag 1 13–16, g 1 12–19, ps 1 9–13, ps 2 10–15. Legs. Setal formula for legs I –IV (coxae to tarsi) same as adult female except tr IV nude: 1 - 1-3 - 1-4 - 8 (1), 2 - 1-3 - 1-4 - 8 (1), 1-2 - 2 - 0-3 - 4, 1 - 0-1 - 0-3 - 4. Tarsi I and II each with 1 antiaxial solenidion ω" (4 long) and 2 eupathidia pζ'-pζ" (ta I 6, 6 long; ta II 5–6, 5– 6 long). Leg setation as in adult except: tr IV without seta v ′. Setae v' added to tr I –III.

PROTONYMPH (n = 6). Dorsum. Body measurements: distance between setae v 2 -h 1 190–250, sc 2 -sc 2 75– 91; other measurements: v 2 -v 2 13–17, sc 1 -sc 1 60–76, c 1 -c 1 5–15, c 2 -c 2 85–105, c 3 -c 3 101–130, d 1 -d 1 10–12, d 2 - d 2 61–77, d 3 -d 3 66–97, e 1 - e 1 7–12, e 2 - e 2 68–88, e 3 - e 3 51–71, f 3 -f 3 41–54, h 1 -h 1 8–12, h 2 -h 2 22–30. Prodorsal shield weakly developed, with similar cuticle pattern to female. Anterior opisthosoma with 2 pairs of weakly developed platelets, between c 1 -c 2 and d 1 -d 2; platelets with few transverse folds. Setae in rows E, F, H inserted on weakly formed pygidial shield, with few oblique folds. Striae of idiosoma similar to deutonymph. Setal lengths: v 2 22–24, sc 1 14–18, sc 2 17–20, c 1 5–6, c 2 12–17, c 3 13–16, d 1 4–5, d 2 17–18, d 3 15–19, e 1 4 –7, e 2 19 –22, e 3 16 – 19, f 3 16–19, h 1 5–7, h 2 17–18. Palps. Palps similar to deutonymph except tibial seta 6–8 long; tarsal eupathidia 3–4 long (thin, tapered), 4–5 long (thick, blunt); solenidion 3–4 long. Venter. Cuticle between 1 a- 1 a with longitudinal striae; striae 1 a and leg III with transverse striae; cuticle between leg III to IV with longitudinal striae; cuticle between legs IV transverse to oblique near ag; cuticle between ag-ag mixed; cuticle laterad genital-anal region longitudinal. Setal lengths: 1a 25 – 54, 1 b 13–24, 2 b 15–16, 3 a 22–49, 3 b 10–14, ag 1 9–13, ps 1 7–9, ps 2 7– 9. Setae 2 c, 4 a, 4 b, g 1, g 2 absent. Legs. Setal formula for legs I –IV (coxae to tarsi) 1 - 0-3 - 0-4 - 8 (1), 1 - 0-3 - 0-4 - 8 (1), 1 - 1-2 - 0-3 - 4, 0- 0-1 - 0-3 - 3. Tarsi I and II each with 1 antiaxial solenidion ω" (3–4 long) and 2 eupathidia pζ'-pζ" (ta I with both 5–6 long; ta II 5–6, 4– 6 long). Leg setation as in deutonymph except: seta 2 c absent; seta 4 b absent; tr I – III without seta v ′; ge I –II without seta l′′; ta IV without setae tc ′. Setae l' added to tr III.

LARVA (n = 3). Dorsum. ( Fig. 24View FIGURE 24 a) Body measurements: distance between setae v 2 -h 1 135–180, sc 2 -sc 2 74– 79; other measurements: v 2 -v 2 13–15, sc 1 -sc 1 56–60, c 1 -c 1 8–10, c 2 -c 2 72–80, c 3 -c 3 104–108, d 1 -d 1 9–10, d 2 -d 2 49–51, d 3 -d 3 70–71, e 1 - e 1 7–8, e 2 - e 2 62–65, e 3 - e 3 49–65, f 3 -f 3 33–41, h 1 -h 1 6–9, h 2 -h 2 18–28. Dorsal shields not developed; dorsal cuticle with few weak transverse folds. Lateral setae lanceolate, obviously barbed; central setae short, weakly barbed. Setal lengths: v 2 22–25, sc 1 14–16, sc 2 19–21, c 1 4–6, c 2 12–14, c 3 13–14, d 1 4–7, d 2 14–16, d 3 15–19, e 1 5, e 2 13 –19, e 3 15 –18, f 3 16–19, h 1 5–6, h 2 15–20. Palps. ( Fig. 24View FIGURE 24 a) Palps same as deutonymph. Tibial seta 5–6 long; tarsal eupathidia 3, 4 long; solenidion 2–3 long. Venter. All setae fine. Setal lengths: 1a 23 – 33, 1 b 11–19, 3 a 20–26, ps 1 4–7, ps 2 4–6. Legs. ( Fig. 24View FIGURE 24 b) Setal formula for legs I –III (coxae to tarsi) 1 - 0-3 - 0-4 - 7 (1), 0- 0-3 - 0-4 - 7 (1), 0- 0-2 - 0-3 - 3. Tarsi I and II each with 1 antiaxial solenidion ω" (2–3 long) and 2 eupathidia pζ'-pζ" (5 long). Leg setation as in protonymph except: seta 2 b absent; seta 3 b absent; tr I –III nude; ta I –III without seta tc ′.

Remarks. This species is very similar to Cr. muellerianae  but can be readily distinguished by lacking setae tc'' on tarsi I –IV (present in Cr. muellerianae  ), the stouter palpal segments (finer in Cr. muellerianae  ), lanceolate setae h 1 (more palmate in Cr. muellerianae  ), and irregular dorsal reticulation (linear in Cr. muellerianae  ).

WINC

Waite Insect and Nematode Collection

USNM

Smithsonian Institution, National Museum of Natural History

BRI

Queensland Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Prostigmata

Family

Tenuipalpidae

Genus

Crossipalpus

Loc

Crossipalpus verticillatae Smiley, Frost and Gerson, 1996

Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R. 2014
2014
Loc

Crossipalpus verticillatae

Smiley 1996: 174
1996