Protimesius

Bragagnolo, Cibele, 2013, Two new species of Protimesius from northern Brazil (Opiliones: Laniatores: Stygnidae), Zootaxa 3620 (2), pp. 283-292 : 285-286

Key to males of Protimesius species (Modified from Kury & Pinto-da-Rocha, 2008)

Remark: Males of P. coxalis (Roewer, 1931) and P. palpalis are unknown.

1. Femur IV without tubercles.............................................................................. 2

- Femur IV tuberculate................................................................................. 3

2. Tibia IV armed with two ventroapical tubercles (Pinto-da-Rocha, 2000, fig. 3).............................. P. apiacas

- Tibia IV unarmed (Pinto-da-Rocha, 1997, fig. 401)............................................... P. longipalpis

3. Trochanter IV with one dorsal, long and acute tubercle ( Fig. 2 A)................................................ 4

- Trochanter IV without an acute and long tubercle............................................................ 6

4. Femur IV with ventral row of tubercles.................................................................... 5

- Femur IV without ventral row of tubercles ( Fig. 3 D).............................................. P. jirau sp. nov.

5. One ventral row of similar-sized tubercles of on ventral femur IV; dorsal region smooth........................ P. cirio

- Two ventral rows of tubercles on femur IV (longer tubercles on middle); dorsal region with one row (Pinto-da-Rocha, 1997, figs 392 and 393)............................................................................... P. laevis

6. Patella IV with a dorsal row of tubercles (at least four)....................................................... 7

- Patela IV without a dorsal row of tubercles................................................................ 12

7. Tibia IV with a dorsal row of acute tubercles................................................................ 8

- Tibia IV without dorsal tubercles........................................................................ 10

8. Tibia IV with ventral row of tubercles (continuous with the apical retrolateral row) (Pinto-da-Rocha, 1997, fig. 377)....... 9

- Tibia IV without ventral row of tubercles (only the apical retrolateral row) ( Fig. 2 D)................... P. regalo sp. nov.

9. Tibia IV with one dorsal row of tubercles from the base almost to the apex; prosoma with medio-anterior mound (Pinto-da- Rocha, 1997, figs 371 and 376)................................................................. P. evelineae

- Tibia IV with one dorsal row of tubercles on 1/3 basal; prosoma without medio-anterior mound (Pinto-da-Rocha, 1997, figs 371 and 376).............................................................................. P. foliadereis

10. Femur IV with ventral row of tubercles................................................................... 11

- Femur IV without ventral row of tubercles (Pinto-da-Rocha & Villareal-Manzanilla, 2009, fig. 9)............. P. bahiensis

11. Femur IV with ventral row small tubercles on 1/5 apex (Pinto-da-Rocha, 1997, fig. 392).................. P. amplichelis

- Femur IV with one ventral retrolateral row of tubercles on2/3 apical (Villareal-Manzanilla & Pinto-da-Rocha, 2006, fig.21)............................................................................................. P. boibumba

12. Tibia IV clavate; femur IV with two small lateral rows of tubercles at base (Villareal-Manzanilla & Pinto-da-Rocha, 2006, fig. 13)........................................................................................... P. junina

- Tibia IV cylindrical and femur without lateral rows of tubercles at base......................................... 13

13. Tibia IV without tubercles.............................................................................. 14

- Tibia IV tuberculate................................................................................. 16

14. Femur IV very tuberculate in all regions (Pinto-da-Rocha 1997, figs 408 and 409)...................... P. mendopticus

- Femur IV only with tubercles on ventro-apical region or smooth.............................................. 15

15. Femur IV with tubercles on ventro-apical region (Villareal-Manzanilla & Pinto-da-Rocha,2006, fig. 35)....... P. c a r n a v a l

- Femur IV smooth............................................................................ P. o s v a l d o i

16. Leg IV short (30 mm) and tuberculate on all sides (Pinto-da-Rocha 1997, fig. 378)......................... P. gracilis

- Leg IV long (37-41 mm) and weakly tuberculate (lateral and dorsal regions of femur and tibia smooth)................ 17

17. One white band on posterior margin of dorsal scute................................................ P. albilineatus

- Two white spots on posterior margin of dorsal scute............................................. P. trocaraincola

Figures

FIGURE 2. Protimesius regalo sp. nov., male holotype. A. Dorsal view of body. B Lateral view of body. C – E. Segments of leg IV (C. dorsal view of trochanter-tibia, D. ventral view of trochanter-tibia; E. lateral view of patella and tibia); F and G. Right pedipalpus (F. ectal view, G. mesal view). Scale bars: 1 mm.

FIGURE 3. Protimesius jirau sp. nov., male holotype. A. Dorsal view of body. B Lateral view of body. C – G. Segments of leg IV (C. dorsal view of trochanter-tibia, D. ventral view of trochanter-tibia; E. ventral view of trochanter – femur; F. ventral view of patela; G. ventral view of tibia;); H and I. Right pedipalpus (H. ectal view, I. mesal view). Scale bars: 1 mm.