Philippipalpus flumaquercus 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: 116-119

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-FF95-FFAC-F387-FD9BFBB2FE5A

treatment provided by

Plazi

scientific name

Philippipalpus flumaquercus Beard and Seeman
status

sp. nov.

Philippipalpus flumaquercus Beard and Seeman  sp. nov.

( Figs 98–102View FIGURE 98View FIGURE 99View FIGURE 100)

Type material examined. Holotype female ex. River She-Oak Casuarina cunninghamiana  ( Casuarinaceae  ), AUSTRALIA: Queensland, nr Biggenden, 3 km ENE Didcot, Didcot Creek, 25 ° 27 ’ 54 ’’ S 151 ° 53 ’ 47 ’’ E, 29 August 2004, coll. J.J. Beard and P.I. Forster (QM). Paratypes. 6 females, 1 deutonymph, 1 protonymph, same data as holotype (QM, ANIC, USNM).

Diagnosis. Distance between setae v 2 -h 1 330–340. Distance between e 2 -e 2 115–125. Prodorsal shield laterally with coarse folded sculpturing, medially with coarse reticulate sculpturing; without depressions. Cuticle between prodorsal and opisthosomal shields (sejugal region) strongly papillate-striate. Opisthosomal shield with somewhat distinct paired mesonotal shields and pygidial shield; mesonotal region distinctly separated into 2 shields by smooth cuticle with a few coarse irregular longitudinal folds mesally; mesonotal and pygidial regions separated by smooth region with irregular transverse folds between d 1 -e 1. Lateral cuticle with> 80 strong papillae. Cuticle between 3 a- 4 a entirely transverse to wavy. Vesicle of spermatheca round, 1.5 x 1.5, without grainy appearance.

FEMALE (n = 7). Dorsum. ( Fig. 98View FIGURE 98 a) Body measurements: distance between setae v 2 -h 1 330–340 [330], sc 2 - sc 2 105–115 [110]; other measurements: v 2 -v 2 24–33 [33], sc 1 -sc 1 83–90 [89], c 1 -c 1 27–32 [32], c 3 -c 3 140–145 [145], d 1 -d 1 15–20 [18], d 2 -d 2 130–135 [129], d 3 -d 3 115–125 [120], e 1 - e 1 13–19 [18], e 3 -e 3 100–115 [105], f 3 -f 3 79–90 [84], h 1 -h 1 21–30 [26], h 2 -h 2 49–65 [56]. Gnathosoma concealed beneath the prodorsum. Anterior margin of prodorsum with a deep medial notch (internal depth 21–26 [25]) forming 1 pair of broad fleshy lobes, each bearing v 2 (inserted ventrally). Prodorsal shield laterally with coarse folded sculpturing, medially with coarse reticulate sculpturing; without depressions. Opisthosomal shield with somewhat distinct paired mesonotal shields and pygidial shield; mesonotal region distinctly separated into 2 shields by smooth cuticle with few coarse irregular longitudinal folds mesally; mesonotal and pygidial regions separated by smooth region with irregular transverse folds between d 1 -e 1. Surrounding cuticle almost completely papillate, papillae irregular. All dorsal shield setae short, barbed, with longitudinal barbed ridges, thick, triangular in cross-section; medial setae only slightly broader than lateral setae. Setal lengths: v 2 15–20 [20], sc 1 14–17 [15], sc 2 18–20 [20], c 1 17–21 [21], c 3 17–19 [19], d 1 13–17 [14], d 2 16–20 [18], d 3 16–18 [17], e 1 10 –12 [11], e 3 16 –18 [18], f 3 14–20 [18], h 1 11–14 [12], h 2 15–18 [17]. Palps. ( Fig. 98View FIGURE 98 b) Setal formula 0, 0, 0, 2, 3 (1 s+ 2 e). Tibial setae, dorsal 6 [6] long, ventral 8–9 [8] long; tarsal eupathidia 4 [5], 5–6 [6] long; solenidion 5–6 [6] long. Venter. ( Fig. 99View FIGURE 99 a) Cuticle smooth, with transverse striae behind cx IV, abruptly becoming longitudinal to genital area; fine striae become coarse lateral to genital area. Striae broken in small area anteromedial to 1 a. Genital setae inserted in more-or-less transverse line along posterior margin of genital shield; setae g 1 inserted slightly posterior to g 2. Genital shield smooth, weakly developed, membranous. All coxal setae fine. Setal lengths: 1a 35 – 55 [35], 1 b 13–19 [14], 2 b 15–23 [18], 2 c 18–20 [20], 3a 35 – 50 [50], 3 b 11–12 [12], 4a 31 – 40 [31], 4 b 14–19 [15], ag 1 10–14 [10], g 1 17–23 [19], g 2 16–20 [16], ps 1 14– 15 [15], ps 2 12–18 [18], ps 3 7–10 [10]. Spermatheca. ( Fig. 99View FIGURE 99 b) Spermathecal tube long and narrow, ca. 100–115 [110] long. Spermatheca vesicle small, rounded to bean-shaped (1.5 x 1.5), without accessory structures, without granular appearance. Genital opening anteromedad anal setae ps 3. Legs. ( Fig. 100View FIGURE 100) Setal formula for legs I –IV (coxae to tarsi) 1 - 0-3 - 1-4 - 8 (1), 2 - 0-3 - 1-4 - 8 (1), 1 - 1-2 - 0-2 - 4, 1 - 0-1 - 0-2 - 4. Tarsi I and II each with 1 antiaxial solenidion ω" (10–11 [10] long) and 2 eupathidia pζ'-pζ" (6–7 [6–7] long). Leg setation as in Table 1 except: coxae I without 1 c; tr I –IV without v ′ (l' present on tr III); ge I –II with d, ge I –III without l ′, ge I –II without v ′; tibiae III – IV without d; ta I –IV without tc ′′.

MALE. Unknown.

DEUTONYMPH (n = 1). Dorsum. ( Fig. 101) Body measurements: distance between setae v 2 -h 1 285, sc 2 -sc 2 92; other measurements: v 2 -v 2 24, sc 1 -sc 1 76, c 1 not expressed on left hand side, c 3 -c 3 121, d 1 -d 1 17, d 2 -d 2 105, d 3 -d 3 93, e 1 - e 1 15, e 3 - e 3 86, f 3 -f 3 66, h 1 -h 1 21, h 2 -h 2 43. Anterior margin of prodorsum rounded, not incised medially; with small lobe between setae v 2 beneath margin of shield. Prodorsal shield weakly developed with weak wrinkled sculpturing in a longitudinal-oblique pattern. Opisthosomal shield appears absent, cuticle mostly folded transversely, becoming oblique-longitudinal posteriorly. Pore visible laterad c 1. All dorsal shield setae short, barbed, with longitudinal barbed ridges, thick, triangular in cross-section. Setal lengths: v 2 22, sc 1 broken, sc 2 21, c 1 15, c 3 21, d 1 16, d 2 20, d 3 19, e 1 14, e 3 19, f 3 18, h 1 13, h 2 17. Palps. Palps similar to adult. Tibial setae, dorsal 4 long, ventral 5 long; tarsal eupathidia both 4 long; solenidion 4 long. Venter. ( Fig. 102View FIGURE 102 a) Cuticle mostly smooth, with transverse striae behind cx IV, abruptly becoming longitudinal to genital area; fine striae become coarse lateral to genital area. Striae broken in small area anteromedial to 1 a. All coxal setae fine. Setal lengths: 1a 39, 1 b 8, 2 b 8, 2 c 17, 3a 35, 3 b 8, 4a 35, 4 b 9, ag 1 9, g 1 14, ps 1 12, ps 2 8, ps 3 7. Legs. ( Fig. 102View FIGURE 102 b) Setal formula for legs I –IV same as adult. Tarsi I and II each with 1 antiaxial solenidion ω" (ta I 6 long, ta II 5 long) and 2 eupathidia pζ' - pζ" (4–5 long).

PROTONYMPH (n = 1). Dorsum. Body measurements: distance between setae v 2 -h 1 235, sc 1 -sc 1 74; other measurements: v 2 -v 2 24, sc 2 -sc 2 85, c 1 -c 1 21, c 3 -c 3 110, d 1 -d 1 15, d 2 -d 2 86, d 3 -d 3 80, e 1 - e 1 11, e 3 - e 3 71, f 3 -f 3 53, h 1 -h 1 33, h 2 -h 2 16. Anterior margin of prodorsum rounded, not incised medially, with small lobe between setae v 2, beneath margin of shield. Prodorsal shield weakly developed with wrinkled-grooved sculpturing in a longitudinal-oblique pattern. Opisthosomal shield absent; cuticle with sparse transverse folds, becoming obliquelongitudinal posteriorly. All dorsal shield short, barbed, thick. Setal lengths: v 2 22, sc 1 14, sc 2 17, c 1 16, c 3 16, d 1 9, d 2 16, d 3 15, e 1 9, e 3 15, f 3 16, h 1 10, h 2 15. Palps. Palps similar to adult. Tibial setae, dorsal 7 long, ventral 4 long; tarsal eupathidia both 4 long; solenidion 3 long. Venter. Cuticle smooth, with transverse striae behind cx IV, abruptly becoming longitudinal to genital area; fine striae become coarse lateral to genital-anal region. Striae broken in small area anteromedial to 1 a. All coxal setae fine. Setal lengths: 1a 28, 1 b 10, 2 c 15, 3a 20, 3 b 8, ag 1 7, ps 1 4, ps 2 4, ps 3 4. Legs. ( Fig. 102View FIGURE 102 c) Setal formula (coxae to tarsi) 1 - 0-3 - 0-4 - 8 (1), 1 - 0-3 - 0-4 - 8 (1), 1 - 1-2 - 0-2 - 4, 0- 0-1 - 0-2 - 3. Tarsi I and II each with 1 antiaxial solenidion ω" (3 long) and 2 eupathidia pζ'-pζ" (ta I 5, 4 long; ta II 5, 3 long). Leg setation as in Table 1 except: coxae I without 1 c; genua I –III without l ′; tibiae III –IV without d; tarsi I – III without tc ′′. Setae l' added to tr III.

LARVA. Unknown.

Etymology. The specific name derives from the latinisation of the common name “River Oak”.

Remarks. Females of Ph. flumaquercus  have slightly smaller features than female Ph. agohoi  , even though the body size is greater (328–340 versus 300–310 for v 2 -h 1). In addition, P. flumaquercus  can be separated from P. agohoi  by having a coarsely rugose prodorsum, while the latter has a finely reticulate prodorsum.

These mites were collected from the needle-like stems of the host plant, which was growing in woodland with Corymbia tessellaris  and Eucalyptus tereticornis  , both Myrtaceae  , on sandy alluvium.

ANIC

Australian National Insect Collection

USNM

Smithsonian Institution, National Museum of Natural History