Chaudhripalpus creelae ( 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: 7-14

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-FFE0-FFD7-F387-FD6EFF39FA58

treatment provided by

Plazi

scientific name

Chaudhripalpus creelae ( Smiley, Frost and Gerson, 1996 )
status

 

Chaudhripalpus creelae ( Smiley, Frost and Gerson, 1996) 

( Figs 1–6View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6)

Crossipalpus creelae Smiley, Frost and Gerson, 1996: 176  , fig. 21. Chaudhripalpus creelae, Mesa et al. 2009: 57  , fig. 19.

Type material examined. Holotype female ex. Bull-Oak Allocasuarina luehmannii  ( Casuarinaceae  ) [feeding on bark of branchlets], AUSTRALIA: South Australia, 16 km E Mt Mary, 14 December 1995, coll. W. Frost [on same slide as 2 paratypes of Ch. creelae  and 2 specimens of Magdalenapalpus strandtmanni (Smiley, Frost and Gerson)  ( WINC)]. Paratypes. 11 females, 4 protonymphs, 1 larva, same data as holotype except 28 February 1996 (6 slides; WINC); 4 females and 1 protonymph, same data as holotype (5 slides; only 1 female in good condition); 1 female, same data as holotype except 28 February 1996 (on same slide as 1 female of Ma. strandtmanni  ; USNM); 1 female and 1 deutonymph, same data as holotype except 28 February 1996 (on same slide as 1 female of Ma. strandtmanni  ; USNM).

Diagnosis. Prodorsal cuticle with coarse, longitudinally lineate sculpturing. Dorsal opisthosomal cuticle with longitudinal striate sculpturing posteriorly; longitudinal folding between setae c 1 -d 1 and d 1 -e 1; olique folds and striate sculpturing laterally. Dorsal setae concave. Ventral setae ps 1–2 lanceolate, barbed, seta ps 3 smooth. Trochanters I –IV 1 - 1 - 1 -0 (v ′ present on tr I –II, added in adult, v' absent on tr III –IV; l' present on tr III, added in protonymph).

FEMALE (n = 18). Dorsum. ( Figs 1View FIGURE 1, 2View FIGURE 2 a, b) Body measurements: distance between setae v 2 -h 1 235–280 [265]; sc 2 -sc 2 86–100 [92]; other measurements: v 2 -v 2 27–35 [32], sc 1 -sc 1 73–89 [84], c 1 -c 1 22–26 [26], c 3 -c 3 105–120 [115], d 1 -d 1 16–26 [22], d 3 -d 3 93–110 [96], e 1 - e 1 17–27 [22], e 3 - e 3 98–109 [100], f 3 -f 3 88–96 [96], h 1 -h 1 21–25 [25], h 2 -h 2 57–69 [69]. Gnathosoma entirely or almost entirely concealed beneath anterior margin of prodorsum ( Figs 2View FIGURE 2 a, b). Cuticle between gnathosoma and prodorsum produced to form 1 pair of blunt, broadly triangular membranous lobes (with median notch formed between lobes), anterior to and folded under anterior margin of prodorsum; lobes often appear slightly retracted back into prosoma, under an anterior fold ( Fig. 2View FIGURE 2); setae v 2 inserted on ( Fig. 1View FIGURE 1) or under edge of anterior fold ( Figs 2View FIGURE 2 a, b). Prodorsal shield weakly developed; cuticle with longitudinal folds and striations. Opisthosomal shield weakly developed; cuticle with longitudinal folds between c 1 -c 1 and posterior to e 1 -e 1; cuticle with transverse to oblique folds between central setae and lateral setae. All dorsal setae palmate, barbed, concave like a scoop (see v 2 in Fig. 1View FIGURE 1; setae f 3, h 1, h 2 in Fig. 3View FIGURE 3). Setal lengths: v 2 16– 20 [16], sc 1 14–17 [16, 17], sc 2 14–21 [18], c 1 15–18 [16, 17], c 3 16–21 [17, 19], d 1 13–16 [13, 14], d 3 16–21 [18, 20], e 1 13 –15 [13, 14], e 3 15 –21 [19], f 3 15–20 [18, 19], h 1 12–17 [15], h 2 14–20 [17, 18]. Palps. ( Fig. 2View FIGURE 2) Setal formula 0, 0, 0, 2 (1 s+ 1 e). Tarsal eupathidium seta-like 7–10 [10] long; solenidion 7–9 [8] long. Venter. ( Fig. 3View FIGURE 3) Cuticle with fine transverse striae between setae 1 a - 3 a; striae longitudinal between setae 3 a - 4 a; band of striae transverse midway between 4 a and ag; striae anterior ag longitudinal, fine; striae surrounding genital region broadly separated, coarse, mostly longitudinal. Genital flap weakly developed, mostly smooth with some weak folds centrally; genital setae inserted in more-or-less transverse row along posterior margin of flap, g 1 inserted slightly posterior to level of g 2; g 1–2 broadly lanceolate, strongly barbed; ag lanceolate, barbed. Pseudanal setae ps 1–3 inserted medially on weakly defined anal plates in longitudinal line; ps 1–2 broadly lanceolate, broader than ps 3, strongly barbed; ps 3 lanceolate, weakly barbed. Coxal setae 1 b, 2 b, 3 b, 4 b fine, weakly barbed; setae 2 c thickened, barbed; setae 1 a, 3 a, 4 a with thickened bases, tapering to fine tip. Setal lengths: 1a 29 – 58 [29], 1 b 16– 27 [16], 2 b 15–26 [18], 2 c 16–19 [17], 3a 31 – 55 [31], 3 b 14–23 [14], 4a 23 – 52 [34], 4 b 13–22 [13], ag 1 11–17 [11, 15], g 1 11–16 [15], g 2 11–15 [15], ps 1 8–11 [11], ps 2 8–13 [11], ps 3 9–12 [12]. Spermatheca. Not visible. Legs. ( Fig. 4View FIGURE 4) Setal formula for legs I –IV (coxae to tarsi): 1 - 1-3 - 0-4 - 8 (1), 2 - 1-3 - 0-4 - 8 (1), 1 - 1-2 - 0-3 - 4, 1 - 0-1 - 0-3 - 4. Tarsi I and II each with 1 antiaxial solenidion ω" (ta I 9–11 [9, 10] long, ta II 9–11 [9, 10] long) and 2 eupathidia pζ'-pζ" (ta I with both 6–7 [7] long; ta II with both 6–7 [6, 7] long). Leg setation as in Table 1 except: cx I without 1 c, tr III –IV without seta v ′; ge I –IV without setae; ta I –IV without seta tc′′. Setae v' added to tr I –II.

DEUTONYMPH (1 paratype). Dorsum. Body measurements: distance between setae v 2 -h 1 243, sc 2 -sc 2 89; other measurements: v 2 -v 2 28, sc 1 -sc 1 78, c 1 -c 1 22, c 3 -c 3 122, d 1 -d 1 23, d 3 -d 3 93, e 1 - e 1 21, e 3 - e 3 93, f 3 -f 3 88, h 1 -h 1 23, h 2 -h 2 60. Dorsum with mostly weak transverse folds, some longitudinal on prodorsum. Triangular lobes between gnathosoma and prodorsum not developed; notch not developed. Dorsal setae with strongly developed basal stalk; Setal lengths: v 2 16–17, sc 1 14, sc 2 15, c 1 15–16, c 3 16, d 1 15, d 3 17, e 1 15, e 3 15, f 3 16, h 1 12–13, h 2 14. Palps. ( Fig. 5View FIGURE 5 b) Palps similar to adult. Tarsal eupathidium 8 long, solenidion 4–5 long. Venter. ( Fig. 5View FIGURE 5 a) Cuticle with fine longitudinal striae on gnathosoma to setae 1 a; transverse striae between setae 1 a and just anterior to setae ag; longitudinal striae from just anterior setae ag to g 1; longitudinal striae laterad genital region. Coxal setae fine, except 2 c thickened, barbed. Setal lengths: 1a 42, 1 b 22, 2 b 16–18, 2 c 16–19, 3 a 40, 3 b 17, 4a 28, 4 b 18, ag 1 12– 13, g 1 12–13, ps 1 7, ps 2 6, ps 3 7. Legs. Setal formula for legs I –IV 1 - 0-3 - 0-4 - 8 (1), 2 - 0-3 - 0-4 - 8 (1), 1 - 1-2 - 0-3 - 4, 1 - 0-1 - 0-3 - 4. Tarsi I and II each with 1 antiaxial solenidion ω" (6 long) and 2 eupathidia pζ'-pζ" (6 long). Leg setation as in adult, except: tr I –III without v ′ (typical deutonymphal seta delayed to adult stage; see Table 1).

PROTONYMPH (5 paratypes). Dorsum. Body measurements: distance between setae v 2 -h 1 170–195, sc 2 -sc 2 75–80; other measurements: v 2 -v 2 19–23, sc 1 -sc 1 67–70, c 1 -c 1 21–24, c 3 -c 3 91–110, d 1 -d 1 19–21, d 3 -d 3 72–74, e 1 - e 1 13–16, e 3 - e 3 73–77, f 3 -f 3 50–61, h 1 -h 1 12–14, h 2 -h 2 31–33. Gnathosoma exposed or partially concealed beneath anterior margin of prodorsum. Triangular lobes between gnathosoma and prodorsum not developed; notch not developed. Dorsum with sparse striae and folds between areas of smooth cuticle. Setae strongly spatulate or palmate with narrow stalk-like base. Setal lengths: v 2 13–17, sc 1 11–14, sc 2 12–19, c 1 13–15, c 3 11–16, d 1 11–17, d 3 12–15, e 1 13 –15, e 3 12 –14, f 3 11–14, h 1 9–11, h 2 11–13. Palps. Palps similar to adult; solenidion 3–4, eupathidium 6–7. Venter. Cuticle with longitudinal striae on gnathosoma to setae 1 a; with transverse striae between setae 1 a and ag; with longitudinal striae laterad anal region. Coxal setae fine. Setal lengths: 1a 28 – 32, 1 b 11–14, 2 b 8–14, 3 a 28–39, 3 b 13–15, ag 1 11–13, ps 1 7, ps 2 7, ps 3 7. 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" (4–5 long) and 2 eupathidia pζ'-pζ" (5 long). Leg setation as in deutonymph, except: seta 2 c absent; seta 4 b absent; tarsi IV without seta tc ′. Setae l' added to tr III.

LARVA (2 paratypes). Dorsum. ( Fig. 6View FIGURE 6) Body measurements: distance between setae v 2 -h 1 155, sc 2 -sc 2 67; other measurements: v 2 -v 2 18, sc 1 -sc 1 51, c 1 -c 1 16, c 3 -c 3 83, d 1 -d 1 16, d 3 -d 3 61, e 1 - e 1 9, e 3 - e 3 57, f 3 -f 3 44, h 1 - h 1 12, h 2 -h 2 24. Prodorsal shield weakly developed, smooth. Opisthosoma without platelets, with coarse transverse wrinkled striae between c 1 -d 1. All dorsal setae strongly palmate, barbed, with narrow stalk-like base, except v 2 tapered, setiform, barbed. Setal lengths: v 2 15–16, sc 1 8–9, sc 2 10, c 1 11–12, c 3 10, d 1 10, d 3 11, e 1 9, e 3 9 –10, f 3 9–10, h 1 7–8, h 2 9–10. Palps. ( Fig. 6View FIGURE 6) Palps similar to adult; 1 solenidion 3 long, and 1 seta-like eupathidium 5–7 long. Venter. Cuticle mostly transverse with some longitudinal striae around anal region. Coxal setae fine. Setal lengths: 1a 21, 1 b 11, 3a 24, ps 1 5–6, ps 2 5–6, ps 3 5–6. Legs. ( Fig. 6View FIGURE 6) 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" (4–5 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 ′.

Hosts and distribution. This species was described from Bull-Oak Al. luehmannii  near Mt Mary in South Australia.

Remarks. Mesa et al. (2009) listed incorrect leg setal counts (see above description for correct counts). The additional material examined in this study was not listed in the original description by Smiley et al. (1996). The host is incorrectly spelt on the slide as Al. luehmanni  , instead of Al. luehmannii  . This mite species exhibits an unusual ontogeny with the expression of seta v ′ on the trochanters, i.e. v ′ is delayed until the adult stage on trochanters I –II and is totally absent on trochanters III –IV (this seta usually first appears on trochanters I –III in the deutonymph, and on trochanters IV in the adult, see Table 1).

Chaudhripalpus creelae  can be separated from Ch. costacola  by the presence of v' on trochanters I –II and absence on tr III –IV (v' absent on tr I –IV in Ch. costacola  , i.e. tr I, II, IV nude) and the presence of broadly lanceolate setae ps 1–2 (narrowly setiform in Ch. costacola  ).

Notes: Grey cells indicate where setae are present (if the species possesses the seta at all). Cells with an X show setae that are sometimes delayed to the adult stage see descriptions of Chaudhripalpus creelae  and Palpipalpus hesperius  ). Genu IV is bare in all taxa and is not listed.

Cx Cx Cx Tr Tr Tr Tr Fe Fe Fe

Cx I II III IV I II III IV Fe I II III IV

1 a 1 b 1 c 2 b 2 c 3 a 3 b 4 a 4 b v' v' l' v' v' d v' bv'' d v' bv'' d ev' ev' Larva

PN

DN X X X Adult

Ge Ge Ti Ti Ti Ti

Ge I II III I II III IV

l' d l'’ l' d l'’ l' d l' v' v'' d l' v' v'' d v' v'' d v' v'' Larva

PN

DN

Adult

Ta Ta I-II III TaIV u' u'' p' p'' tc' tc'' ft' ft'' ω'' u' u'' tc' tc'' ft' u' u'' tc' tc'' ft'

Larva

PN

DN

Adult

WINC

Waite Insect and Nematode Collection

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Prostigmata

Family

Tenuipalpidae

Genus

Chaudhripalpus

Loc

Chaudhripalpus creelae ( Smiley, Frost and Gerson, 1996 )

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

Crossipalpus creelae

Mesa 2009: 57
Smiley 1996: 176
1996