Crossipalpus raveni Beard and Seeman,

Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R., 2014, Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales), Zootaxa 3778 (1), pp. 1-157: 44-51

publication ID

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

publication LSID

lsid:zoobank.org:pub:20D5DCD9-17F5-4863-B627-42B7C349B9A7

persistent identifier

http://treatment.plazi.org/id/194C87D0-FFCD-FFE8-F387-FB52FB0CFF57

treatment provided by

Plazi

scientific name

Crossipalpus raveni Beard and Seeman
status

sp. nov.

Crossipalpus raveni Beard and Seeman  sp. nov.

( Figs 32–37View FIGURE 32View FIGURE 33View FIGURE 34View FIGURE 35View FIGURE 36View FIGURE 37)

Type material examined. Holotype female ex. Woolly Oak Allocasuarina inophloia  ( Casuarinaceae  ), AUSTRALIA: Queensland, Moonie Highway, 90 km W Moonie, 27 ° 56 ’ 57 ” S 149 ° 31 ’ 19 ” E, 0 5 May 2007, coll. J.J. Beard and P.I. Forster (QM; BRI voucher PIF 32483View Materials). Paratypes. 9 females, 5 males, and 4 larvae, same data as holotype (QM, ANIC, USNM).

Diagnosis. Dorsal setae lanceolate, strongly barbed; setae e 1 shortest. Palpal segments as wide as long. Genua I –II with seta d, without l′′; tarsi I –IV without tc′′. Solenidia of male much thicker and longer than in female.

FEMALE (n = 10). Dorsum. ( Fig. 32View FIGURE 32 a) Body measurements: distance between setae v 2 -h 1 310–365 in 9 paratypes [355]; sc 2 -sc 2 100–110 [110]; other measurements: v 2 -v 2 22–24 [24], sc 1 -sc 1 86–98 [98], c 1 -c 1 15–22 [22], c 2 -c 2 100–115 [115], c 3 -c 3 125–145 [135], d 1 -d 1 14–21 [21], d 2 -d 2 85–95 [94], d 3 -d 3 110–120 [120], e 1 - e 1 14–18 [16], e 2 -e 2 100–110 [110], e 3 - e 3 89–100 [95], f 3 -f 3 70–80 [73], h 1 -h 1 12–17 [13], h 2 -h 2 35–54 [48]. Gnathosoma completely concealed beneath prodorsum. Anterior margin of prodorsum rounded. Prodorsal shield weakly developed with oblique grooves laterally, longitudinal grooves medially. Opisthosomal shield weakly developed with oblique-longitudinal lineate grooves, becoming transverse between setae d 1 -e 1. Lateral cuticle surrounding shields smooth. Dorsal setae lanceolate, barbed; setae e 1 shorter than other setae. Setal lengths: v 2 21– 25 [22], sc 1 20–25 [20], sc 2 20–22 [20], c 1 15–19 [15], c 2 14–20 [16], c 3 17–21 [18], d 1 12–19 [15], d 2 14–21 [18], d 3 17–21 [18], e 1 7 –9 [8], e 2 17 –24 [19], e 3 17 –24 [20], f 3 18–23 [21], h 1 9–12 [11], h 2 21–24 [21]. Palps. ( Fig. 32View FIGURE 32 b) Setal formula 0, 0, 0, 1, 3 (1 s+ 2 e). Tibial seta 9–11 [9] long; tarsal eupathidia 6 [6], 5 [5] long; solenidion 4–5 [4] long. Venter. ( Fig. 33View FIGURE 33 a) Cuticle with fine transverse striae between setae 1 a - 3 a, longitudinal between setae 3 a - 4 a, then convex for 20–30 Μm, striae longitudinal posterior to setae 4 a; fine striae become coarse lateral to genital area. Genital setae inserted in more-or-less transverse row, g 1 inserted slightly posterior to level of g 2. Genital shield smooth, poorly developed; anal setae ps 1–2 inserted medially on anal plates in longitudinal line; seta ps 3 absent. Coxal setae fine, 2 c barbed; setae ag 1, g 1–2, ps 1–2 fine, with few barbs. Setal lengths: 1a 64 – 83 [64], 1 b 18–30 [21], 2 b 18–25 [18], 2 c 18–21 [19], 3a 35 – 66 [35], 3 b 16–22 [17], 4a 42 – 92 [45], 4 b 14–26 [15], ag 1 14–18 [14], g 1 20–24 [21], g 2 18–23 [19], ps 1 11–16 [14], ps 2 10–13 [13]. Spermatheca. ( Fig. 33View FIGURE 33 b) Spermathecal tube long, becoming narrow and sometimes convoluted distally, maximum 2 wide, ca. 80 long. Spermatheca vesicle not oval-shaped, 4 long, 2 wide. Genital opening between setae ps 2. Legs. ( Fig. 34View FIGURE 34) 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" (5–6 long) and 2 eupathidia pζ'-pζ" (7–8 [7] long). Leg setation as in Table 1 except: coxae I without 1 c; genua I –II with d, without l′′; tarsi I –IV without tc′′. Setae v' added to tr IV.

MALE (5 paratypes). Dorsum. ( Fig. 35View FIGURE 35) Body measurements: distance between setae v 2 -h 1 245–265, sc 2 -sc 2 83–91; other measurements: v 2 -v 2 13–17, sc 1 -sc 1 69–74, c 1 -c 1 12–17, c 2 -c 2 85–94, c 3 -c 3 96–112, d 1 -d 1 11–13, d 2 -d 2 69–74, d 3 -d 3 78–87, e 1 - e 1 11–17, e 2 - e 2 73–81, e 3 - e 3 69–77, f 3 -f 3 57–66, h 1 -h 1 7–10, h 2 -h 2 35–43. Gnathosoma not concealed beneath prodorsum. Anterior margin of prodorsum smooth, weakly convex. Prodorsal shield weakly developed. Opisthosoma with mesonotal shield (appearing as a pair of shields) on which at least setae c 1, d 1 and d 2 inserted, with weak rugose-lineate pattern; and pygidial shield with at least setae e 1, e 3, f 3, h 2 inserted, with oblique-longitudinal weakly lineate pattern; setae h 1 often under posterior overhang of pygidial shield; shields separated by transverse striae; cuticle laterad mesonotal shield smooth with few papillations; several minute pores visible on shields. Setal lengths: v 2 19–24, sc 1 16–19, sc 2 15–20, c 1 9–14, c 2 11–16, c 3 15–17, d 1 7– 13, d 2 9–15, d 3 12–18, e 1 6 –8, e 2 14 –17, e 3 15 –18, f 3 15–19, h 1 7–10, h 2 15–19. Palps. Palps similar to female. Tibial seta 8–10 long; tarsal eupathidia 6–7, 5 – 6 long; solenidion 7–8 long, swollen. Venter. ( Fig. 36View FIGURE 36 a) All striae transverse, becoming coarse posteriorly and weak around setae ag 1. Coxal setae fine, except 2 c barbed. Setae ag 1 barbed; g 1, g 2, ps 2 fine; setae ps 1 modified to form thick blades (sexually dimorphic). Setal lengths: 1a 47 – 52, 1 b 19–27, 2 b 19–24, 2 c 13–21, 3 a 46–60, 3 b 17–21, 4 a 37–48, 4 b 15–18, ag 1 13–16, g 1 11–15, g 2 15–20, ps 1 15–16, ps 2 8–11. Aedeagus. ( Fig. 36View FIGURE 36 b) Narrow, sclerotised, tapering to a point, 67–70 long. Membranous duct runs from inside aedeagus, becoming indistinguishable. Legs. ( Fig. 35View FIGURE 35) Setal formula same as female. Tarsi I and II each with 1 antiaxial solenidion ω" (ta I 9–11 long, ta II 9–10 long) and 2 eupathidia pζ'-pζ" (ta I 6–7, 5– 6; ta II 7, 7–8). Solenidia much thicker and longer than those in female.

DEUTONYMPH and PROTONYMPH. Unknown.

LARVA (4 paratypes). Dorsum. ( Fig. 37View FIGURE 37) Body measurements: distance between setae v 2 -h 1 170–180, sc 2 -sc 2 61–64; other measurements: v 2 -v 2 15–16, sc 1 -sc 1 51–55, c 1 -c 1 8–9, c 2 -c 2 58–60, c 3 -c 3 84–87, d 1 -d 1 11–13, e 1 - e 1 5–6, e 2 - e 2 53–54, e 3 - e 3 40–44, f 3 -f 3 34–35, h 1 -h 1 5–7, h 2 -h 2 13–17. Prodorsal shield obsolete. Opisthosomal shields absent; sparse irregular transverse striae anteriorly. Setal lengths: v 2 24–27, sc 1 12–16, sc 2 15–17, c 1 17– 22, c 2 15–17, c 3 10–11, d 1 15–20, d 2 14–18, d 3 11–12, e 1 4 –8, e 2 15 –17, e 3 14 –17, f 3 16–19, h 1 5–6, h 2 18–19. Palps. Palps same as adult. Tibial seta 6–7 long; tarsal eupathidia 3, 4 long, solenidion 2 long. Venter. Transverse striae, becoming oblique around anal region. All setae fine. Setal lengths: 1a 21 – 28, 1 b 13–16, 3 a 16–30, ps 1 4–6, ps 2 4–6. Legs. ( Fig. 37View FIGURE 37) 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" (3 long) and 2 eupathidia pζ'-pζ" (4–5 long). Leg setation as in Table 1 except genua I –III without l ′. Trochanters I –III nude.

Etymology. It is with great pleasure that we name this species for our colleague and friend Dr Robert Raven, in recognition of his support for our work and his immense contribution to Arachnology.

Remarks. Crossipalpus raveni  sp. nov. is similar to Cr. gersoni  sp. nov., as they both have seta d present on ge I –II, but Cr. raveni  has lanceolate setae d on femora and genua I –II (spatulate in Cr. gersoni  ), and posterior ventral setae are thin, setiform and weakly barbed (broadly lanceolate and strongly barbed in Cr. gersoni  ).

BRI

Queensland Herbarium

ANIC

Australian National Insect Collection

USNM

Smithsonian Institution, National Museum of Natural History