Tenuipalpidae,

Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R., 2014, Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales), Zootaxa 3778 (1), pp. 1-157: 141-142

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-FF6A-FF57-F387-FE4EFA7CF9F3

treatment provided by

Plazi

scientific name

Tenuipalpidae
status

 

Key to adult female Tenuipalpidae  from Casuarinaceae 

This key is based partially on that of Mesa et al. (2009). Tenuipalpus  and Brevipalpus  are included because these common genera are likely to be encountered occasionally from samples, and Ultratenuipalpus  is included because we have collected several undescribed species from Casuarinaceae  (unpublished data). This genus will be subjected to a future revision encompassing species on numerous host plants.

1. Posterior dorsal opisthosomal setae h 2 long, flagellate, usually more than twice as long as distance h 2 -h 2 ....... Tenuipalpus 

- Posterior dorsal opisthosomal setae h 2 not markedly long and flagellate, usually similar in shape and size to other dorsal setae.................................................................................................... 2

2. Dorsal opisthosomal setae c 2 present ( Fig. 54View FIGURE 54)............................................................... 7

- Dorsal opisthosomal setae c 2 absent ( Fig. 95View FIGURE 95)............................................................... 3

3. Venter with well defined ventral and genital plates; 2 pairs of ps setae present............................. Brevipalpus 

- Venter without developed ventral plate (region membranous), genital plate or flap weakly developed, membranous; 3 pairs of ps setae present...................................................................................... 4

4. Setae on posterior margin of dorsal opisthosoma with 4–5 pairs of large leaf-like setae (e 3, f 2, f 3, h 1, h 2)............................................................................... Ultratenuipalpus  sensu stricto (meekeri group)

- Posterior margin of opisthosoma without such setae; anterior margin of prodorsum partially or fully covering gnathosoma/inf- racapitulum; anterior margin of prodorsum with median notch forming pair of lobes (lobes may be under anterior margin of prodorsum).......................................................................................... 5

5. Opisthosomal setae e 2 present; palp tarsus with 2 eupathidia and 1 solenidion (e.g. Fig. 95View FIGURE 95)............. Philippipalpus  19

- Opisthosomal setae e 2 absent ( Fig. 1View FIGURE 1); palp tarsus with 1 eupathidium and 1 solenidion ( Figs 2View FIGURE 2 b, 107 b)................. 6

6. Palp with 3 segments ( Fig. 107View FIGURE 107 b); setal formula for tibiae I –IV 3 - 3 - 2 - 2 (seta v′′ absent) ( Fig. 114View FIGURE 114)...... Tegopalpus conicus 

- Palp with 4 segments (basal segment can be difficult to see) ( Fig. 2View FIGURE 2 a, c); setal formula for tibiae I –IV 4 - 4 - 3 - 3 (seta v′′ present) ( Fig. 4View FIGURE 4)............................................................................... Chaudhripalpus  11

7. 2 pairs of ps setae present ( Fig. 15View FIGURE 15 a)...................................................................... 8

- 3 pairs of ps setae present ( Fig. 58View FIGURE 58 b)....................................................................... 9

8. Dorsal opisthosomal setae f 2 present ( Fig. 67View FIGURE 67 a); genua I –II with 2 setae (setae d and l ′′ present) ( Fig. 70View FIGURE 70); anterior margin of prodorsum with 2 rounded median lobes, anterior to setae v 2 ( Fig. 67View FIGURE 67 a)......................... Palpipalpus hesperius 

- Dorsal opisthosomal setae f 2 absent ( Fig. 13View FIGURE 13 a); genua I –II with 1 seta (seta l or d′′ present) ( Figs. 16View FIGURE 16, 28View FIGURE 28); anterior margin of prodorsum rounded, without lobes/notches ( Figs 13View FIGURE 13 a, 14)........................................ Crossipalpus  ... 12

9. Anterior margin of prodorsum with median notch anterior to setae v 2; setae v 2 inserted posterior to lobes that form notch ( Figs 54View FIGURE 54, 55View FIGURE 55); coxal seta 1 c usually present; trochanters I –IV usually with setal formula usually 1 - 1-2 - 1 (v ′ present)........... 10

- Anterior margin of prodorsum with median notch level with or between setae v 2; setae v 2 inserted either side of notch, or on lobes formed by notch ( Figs. 38View FIGURE 38, 42View FIGURE 42, 48View FIGURE 48).................................................. Magdalenapalpus  ... 17

10. Dorsal opisthosomal setae e 2 and f 2, when present, inserted in submarginal position, aligned with c 2, d 2 ( Fig. 54View FIGURE 54).......................................................................................... Meyeraepalpus delfinadae 

- Dorsal opisthosomal setae e 2 and f 2, when present, inserted on lateral margin, aligned with setae c 3, d 3, e 3, f 3 ( Fig. 75View FIGURE 75).......................................................................................... Pentamerismus  ... 15

11. Trochanters I –II with seta v ′ present (setal formula tr I –IV 1 - 1 - 1 -0) ( Fig. 4View FIGURE 4); ventral setae ps 1–2 broadly lanceolate, strongly barbed; setae ps 3 setiform, thin, smooth to weakly barbed ( Fig. 3View FIGURE 3); dorsal opisthosomal setae c 1, d 1, e 1 (15–18, 13 – 16, 13 – 15

long, respectively) subequal in size to c 3, d 3, e 3 (16–21, 16 – 21, 15 – 21 respectively) ( Fig. 1View FIGURE 1)....... Chaudhripalpus creelae  - Trochanters I –II with seta v ′ absent (setal formula tr I –IV 0- 0-1 -0) ( Fig. 9View FIGURE 9); ventral setae ps 1–2 narrow, setiform, barbed; setae ps 3 setiform, smooth to weakly barbed ( Fig. 8View FIGURE 8 b); dorsal opisthosomal setae c 1, d 1, e 1 (13–16, 10 – 11, 9 – 10 long, respectively) slightly smaller than c 3, d 3, e 3 (18–19, 16 – 19, 16 – 18 long, respectively) ( Fig. 7).............. Chaudhripalpus costacola 

12. Genua I –II with seta l′′ present and seta d absent (setal formula ge I –IV 1 - 1 -0-0) ( Fig. 21View FIGURE 21)........................... 13

- Genua I –II with seta l′′ absent and seta d present (setal formula ge I –IV 1 - 1 -0-0) ( Fig. 28View FIGURE 28)........................... 14

13. Tarsi I –IV with seta tc ′′ present (setal formula ta I –IV 9 (1)- 9 (1)- 5 - 5) ( Fig. 16View FIGURE 16); prodorsal setae v 2 obviously longer than sc 1 (21–26, 8 – 13 long, respectively); palp segments longer than wide; anterior lateral opisthosomal setae c 3, d 3, e 2 10 –16 long ( Fig. 13View FIGURE 13 a)....................................................................... Crossipalpus muellerianae 

- Tarsi I –IV with seta tc ′′ absent (setal formula ta I –IV 8 (1)- 8 (1)- 4 - 4) ( Fig. 21View FIGURE 21); prodorsal setae v 2 subequal in length to sc 1 (15– 20, 17 – 20 long, respectively); palp segments as long as wide; anterior lateral opisthosomal setae c 3, d 3, e 2 19 –24 long ( Fig. 19View FIGURE 19 a)............................................................................ Crossipalpus verticillatae 

14. Femora and genua I –II with d seta spatulate ( Fig. 28View FIGURE 28); ventral setae ag, g 1 –2, ps 1–2 thick, broadly lanceolate, strongly barbed ( Fig. 27View FIGURE 27 a); dorsal setae broadly lanceolate ( Fig. 25View FIGURE 25 a).......................................... Crossipalpus gersoni 

- Femora and genua I –II with d seta lanceolate ( Fig. 34View FIGURE 34); ventral setae ag, g 1–2, ps 1–2 thin, setiform, weakly barbed ( Fig. 33View FIGURE 33 a); dorsal setae narrowly lanceolate ( Fig. 32View FIGURE 32 a)................................................... Crossipalpus raveni 

15. Ventral setae g 1–2 and ps 1–2 thick, broadly lanceolate, strongly barbed; setae ag palmate, strongly barbed ( Fig. 76View FIGURE 76 a); femora and genua I –II with d seta palmate ( Fig. 75View FIGURE 75).............................................. Pentamerismus sititoris 

- Ventral setae g 1–2 fine, setiform, weakly barbed; ps setae fine, setiform; ps 1 thicker than ps 2–3; setae ag setiform to lanceolate ( Fig. 89View FIGURE 89 a); femora and genua I –II with d seta lanceolate to weakly spatulate ( Fig. 90View FIGURE 90).............................. 16

16. Palp tibia with 1 seta ( Fig. 88View FIGURE 88 b); ventral setae ag fine, setiform ( Fig. 89View FIGURE 89 a); dorsal cuticle with broad rounded folds ( Figs 88View FIGURE 88 a, 94).......................................................................... Pentamerismus hicklingorum 

- Palp tibia with 2 setae ( Fig. 82View FIGURE 82 b); ventral setae ag lanceolate ( Fig. 83View FIGURE 83); dorsal cuticle weakly reticulate ( Fig. 82View FIGURE 82 a)............................................................................................. Pentamerismus wardo 

17. Dorsal opisthosomal setae f 2 present ( Fig. 38View FIGURE 38)...................................... Magdalenapalpus strandtmanni 

- Dorsal opisthosomal setae f 2 absent ( Fig. 42View FIGURE 42).............................................................. 18

18. Distance between dorsal opisthosomal setae d 1 -d 1 26–30, e 1 - e 1 23–25; dorsal setae broadly lanceolate ( Fig. 42View FIGURE 42)......................................................................................... Magdalenapalpus caperatus 

- Distance between dorsal opisthosomal setae d 1 -d 1 11–16, e 1 - e 1 9–13; dorsal setae narrowly lanceolate ( Fig. 48View FIGURE 48 a).......................................................................................... Magdalenapalpus forsteri 

19. Dorsal lateral cuticle smooth to moderately papillate; sejugal zone smooth or weakly striate ( Fig. 105)................. 20

- Dorsal lateral cuticle strongly papillate; sejugal zone coarsely striate to papillate ( Fig. 98View FIGURE 98 a).......................... 21

20. Dorsal lateral cuticle moderately and irregularly papillate; medial opisthonotum smooth or with few coarse striae ( Fig. 105).............................................................................. Philippipalpus nigraquercus 

- Dorsal lateral cuticle smooth anteriorly, becoming more papillate posteriorly; medial opisthosoma with coarse striae ( Fig. 103View FIGURE 103 a).............................................................................. Philippipalpus belah 

21. Prodorsum coarsely rugose, forming polygons medially; opisthonotum with coarse striations ( Fig. 98View FIGURE 98 a)............................................................................................... Philippipalpus flumaquercus 

- Prodorsum finely reticulate, forming network of small cells medially; opisthonotum rugose-papillate medially with patches of reticulation sublaterally ( Fig. 95View FIGURE 95 a)...................................................... Philippipalpus agohoi