Scutopalus

Rocha, Matheus Dos Santos, Skvarla, Michael Joseph & Ferla, Noeli Juarez, 2013, A new species of Scutopalus (Acari: Cunaxidae: Cunaxoidinae) from Rio Grande do Sul State, Brazil with a key to world species, Zootaxa 3734 (1) : -

Key to the known species of Scutopalus (females) of the world

1. Coxae I–II faintly or totally divided...................................................................... 2

- Coxae I–II fused medially.............................................................................. 6

2. Coxae I–II faintly divided.............................................................................. 3

- Coxae I–II totally divided.............................................................................. 4

3. Sternal shield bearing 6 pairs of setae; setae c2 and mps simple; coxae II with 2 setae; chaetotaxy of basifemora 3-3-2-0.......................................................................................... S. abiesae — Greece

- Sternal shield bearing 5 pairs of setae; setae c2 and mps setose; coxae II with 1 setae; chaetotaxy of basifemora 2-2-2-1..................................................................................... S. arboreus — South Africa

4. At least 2 pairs of thick rod like setae on the dorsal shield; chaetotaxy of coxae I-III 3-3-4............ S. pradhani — India

- Rod-like setae (slightly expanded distally) on dorsal shield absent; chaetotaxy of coxae I-III 3-2-3.................... 5

5. Setae f1 and h1 on small platelets; ratio c1: c2 2.1; chaetotaxy of genua I 4 asl, 5 sts; II 2 asl, 5 sts. S. latisetosus — South Africa

- Setae f1 and h1 on integument; ratio c1: c2 1.1; chaetotaxy of genua I 3 asl, 5 sts; II 1 asl, 5 sts....... S. smolikensis — Greece

6. Dorsal shield smooth and/or punctate..................................................................... 7

- Dorsal shield sparse granulate, rugose or reticulate......................................................... 11

7. Coxae II and IV with 2 setae............................................................................ 8

- Coxae II and IV with 3 setae............................................................................ 10

8. Setae f1 and h1 on integument; setae mps, c1, c2, d1, e1, f1 setiform; a small subscutum situated posterior to dorsal shield absent.................................................................................................... 9

- Setae f1 and h1 on small platelets; setae mps, c1, c2, d1, e1, f1 clavate; a small subscutum situated posterior to dorsal shield present.................................................................................. S. clavatus — Malaysia

9. Setae f1 on dorsal shield; setae lps, mps, c1, c2, d1, e1, f 1 set on tubercles; area between pt more heavily sclerotized, forming ridges............................................................................... S. osseus — Taiwan

- Setae f1 on integument; setae lps, mps, c1, c2, d1, e 1 set normally; area between pt normally sclerotized, not forming ridges....................................................................................... S. trepidus — Ukraine

10. Four pairs of hysterosomal setae around genital shields; long slender platelet laterad genital shield present; with a narrow transverse sclerite behind main shield.............................................. S. philippinensis — Philippines

- Three pairs of hysterosomal setae around genital shields; long slender platelet laterad genital shield absent; without dorsal sclerites........................................................................ S. makapalus — Philippines

11. One or more dorsal sclerites present (behind or lateral to dorsal shield); dorsal shield rugose or reticulate; basifemora IV with one seta; palpal tibiotarsus with six setae present and apophysis absent......................................... 12

- Dorsal sclerites absent; dorsal shield sparsely granulate; basifemora IV with two setae; palpal tibiotarsus with five setae and a rod-shaped dorsal apophysis present.................................................... S. unguianalis — Taiwan

12. Dorsal shield rugose; setae f1 and h1 on integument; dorsal setae (except c2 and h2) distally rod-like (slightly clavate), with min- ute barbs; with a narrow transverse shield behind main dorsal shield.......................... S. rugosus — Philippines

- Dorsal shield reticulate; setae f1 and h1 on small platelets; dorsal setae (except c2 and h2) broad and serrate; sclerites present lat- eral and behind dorsal shield................... Scutopalus tomentosus sp. nov. Rocha, Skvarla and Ferla, 2013— Brazil