Rhagovelia robusta

Magalhães, Oséias Martins, Moreira, Felipe Ferraz Figueiredo & Galvão, Cleber, 2016, A new species of Rhagovelia Mayr, 1865 (Hemiptera: Heteroptera: Veliidae) from Pará State, with an updated key to Brazilian species of the robusta group, Zootaxa 4171 (3), pp. 586-594 : 591

Key to the species of the Rhagovelia robusta group from Brazil

[based on apterous males; modified from Floriano & Moreira (2015)]

1 Hind tibia with several subequal spines, excluding apical spur ( Fig. 7 ).......................................... 2

- Hind tibia with one or more spines greater than others, excluding apical spur...................................... 7

2 Sides of abdominal segment VII bearing patches of small black denticles ( Fig. 6 , 23 )................................ 3

- Sides of abdominal segment VII without patches of small black denticles......................................... 4

3 Hind trochanter without spines or spinules; hind femur bearing a short to medium spine between the proximal row of spinules and its longest spine; paramere as in Fig. 20 ......................... R. sooretama Moreira, Nessimian & Rúdio, 2010

- Hind trochanter with 1–4 subequal spinules plus a longer spine on distal portion ( Fig. 7 ); hind femur without short to medium spine between the basal row of spinules and its longest spine ( Fig. 7 ); paramere as in Fig. 11 .............................................................................................. R. brunae Magalhães & Moreira , sp. nov.

4 Proepisternum lacking minute black denticles............................................................... 5

- Proepisternum bearing minute black denticles (sometimes in small numbers and only visible at higher magnifications)..... 6

5 Body length about 3.20 mm; hind trochanter with small subequal spines plus one much longer spine; paramere as in Fig. 9 ................................................................................. R. amazonensis Gould, 1931

- Body length 3.75–3.85 mm; hind trochanter only with small subequal spines; paramere as in Fig. 17 ........................................................................................ R. pseudotijuca Moreira & Barbosa, 2011

6 Abdominal terga V and VI laterally pruinose with ovate brown spots centrally; abdominal tergum VII with a dark yellowish spot centrally; hind femur with a long, sharp spine removed dorsally from the 2 rows of spines along the posterior margin; paramere as in Fig. 21 ................................................................ R. traili ( White, 1879)

- Abdominal terga V and VI dull black, lacking ovate brown spots centrally; abdominal tergum VII shining black, lacking a dark yellowish spot centrally; hind femur lacking a long, sharp spine removed dorsally from the 2 rows of spines along the posterior margin; paramere as Fig. 16 ..................................................... R. plaumanni Polhemus, 1997

7 Hind trochanter without spines; hind femur with three regular rows of spines, without large conical spine near center; paramere as in Fig. 22 ............................................................... R. zecai Moreira & Barbosa, 2014

- Hind trochanter with at least one spine; if unarmed (rarely in R. bocaina ), then hind femur with a large conical spine near center and several irregular rows of spines; paramere with different shape.......................................... 8

8 Sides of abdominal segment VII bearing patches of small black denticles (as in Figs. 6 , 23 ); hind trochanter armed with small subequal spines plus one to three larger spines............................................................. 9

- Sides of abdominal segment VII lacking patches of small black denticles; hind trochanter armed only with small subequal spines or unarmed (rarely in R. bocaina )................................................................. 10

9 Dorsal coloration, including legs and antennae, uniformly orange brown, not heavily marked with black on appendages; hind femur bearing a long, sharp spine near middle displaced dorsally from the main rows of spines along posterior margin; paramere as in Fig. 15 ................................................................. R. palea Bacon, 1956

- Legs and antennae heavily marked with black on dorsal surface; hind femur lacking a long, sharp spine displaced dorsally from the main rows of spines along posterior margin; paramere as in Fig. 13 ......................... R. jubata Bacon, 1948

10 Small black denticles absent from jugum and adjacent region of proepisternum; anterior margin of hind femur bearing numerous long, erect pilose setae in addition to the typical stout, erect black setae; paramere as in Fig. 12 ................................................................................................... R. guianana Polhemus, 1997

- Small black denticles present on jugum and adjacent region of proepisternum (sometimes in small numbers and only visible at higher magnifications); anterior margin of hind femur lacking numerous long, erect pilose setae, bearing only scattered stout, erect black setae; paramere with different shape............................................................ 11

11 Pronotum yellowish brown, orange brown or brown, lighter on anterior lobe; middle trochanter pale to light yellow..... 12

- Pronotum mostly dark brown to black, strongly contrasting with yellowish brown or orange brown mark on anterior lobe; middle trochanter dark brown to black....................................................................... 13

12 Distal 2/3 of hind femur with 6 irregular rows of spines; paramere as in Fig. 10 ....... R. bocaina Moreira & Ribeiro, 2009

- Distal 2/3 of hind femur with 3 more regular rows of spines; paramere as in Fig. 14 .... R. kararao Floriano & Moreira, 2015

13 Hind femur with two parallel regular rows of spines, without large spine dorsally displaced; paramere as in Fig. 18 .......................................................................................... R. relicta Gould, 1931

- Hind femur with 3–4 irregular rows of spines, with a large spine near its middle dorsally displaced from others; paramere as in Fig. 19 ............................................................................ R. robusta Gould, 1931

Figures

FIGURES 1 – 8. Rhagovelia brunae sp. nov., paratypes. 1. Male, dorsal view. 2. Male, ventral view. 3. Female, dorsal view. 4. Female, ventral view. 5. Male, head and part of thorax, ventral view. 6. Male, last abdominal segments, lateral view. 7. Male, hind leg, ventral view. 8. Female, hind leg, ventral view [scale bar = 1. 0 0 mm in Figs. 1 – 4 and 7 – 8; 0. 20 mm in Fig. 5].

FIGURES 9 – 24. Parameres. 9. Rhagovelia amazonensis. 10. Rhagovelia bocaina. 11. Rhagovelia brunae sp. nov.. 12. Rhagovelia guianana. 13. Rhagovelia jubata. 14. Rhagovelia kararao. 15. Rhagovelia palea. 16. Rhagovelia plaumanni. 17. Rhagovelia pseudotijuca. 18. Rhagovelia relicta. 19. Rhagovelia robusta. 20. Rhagovelia sooretama. 21. Rhagovelia traili. 22. Rhagovelia zecai. 23. Rhagovelia sooretama, apex of abdomen, lateral view. 24. Proctiger. Rhagovelia brunae sp. nov. [9 – 10 and 12 – 23 from Floriano & Moreira (2015)].