Buenoa

Padilla-Gil, Dora N., 2010, A new species of Buenoa (Hemiptera: Heteroptera: Notonectidae) from the Pacific coast of Colombia, with a key to males of notonectids of Colombia, Zootaxa 2622, pp. 61-64 : 63

Key to determine the present species of genus Buenoa from Colombia

Males only

1 Fore femur with stridulatory area present. Fore tibia without parallel margins ........................................................... 2

- Fore femur with stridulatory area absent. Fore tibia with almost parallel margins .................................................... 15

2 Stout species, male L/W: 8.5/2.32; rostral prong longer than third rostral segment, with base originating laterally and protruding anteriorly at distal end of third rostral segment; fore femur has 15 sclerotized ridges, fore tibiae 30 teeth (see Padilla-Gil, 2010c, Figs. 1 –7) ................................................................................................................ B . funensis

- Slender species, male L less than 8.2, W less than 2 ...................................................................................................3

3. Synthlipsis longer or equal than two-fifths anterior width of vertex............................................................................ 7

- Synthlipsis shorter than two-fifths anterior width of vertex .........................................................................................4

4. Synthlipsis four times anterior width of vertex ............................................................................................................ 5

- Synthlipsis three times anterior width of vertex ...........................................................................................................6

5 Smaller species, male L 5.3–6.8. Fore tibia with 3–4 peg-like setae on inner surface near to apex. Fore and middle legs lacking preapical structure of tarsus II ................................................................................................... B. gracilis

- Larger species, male L 8.0. Fore tibia lacking setae on inner surface close to apex. Fore and middle legs with preapical structure of tarsus II (see Padilla-Gil, 2010a, fig. 3e) ......................................................................... B. prosthetus

6 Smaller species, male L 5.9. Fore tibia lacking setae on outer surface close to apex. Fore and middle legs lacking preapical structure of tarsus II ...................................................................................................................... B. amazona

- Larger species, male L 8.0. Fore tibia with three short, peg-like setae on outer surface close to apex. Fore and middle legs with preapical structure of tarsus II (see Padilla-Gil, 2010a, fig. 3d–e)................................................. B. dactylis

7 Stridulatory comb of fore tibia with less than 21 teeth................................................................................................. 8

- Stridulatory comb of fore tibia with more than 22 teeth............................................................................................... 9

8 Smaller species, male L 5.5–6.8. Stridulatory comb of fore femur with 17−21 teeth. Fore and middle legs lacking preapical structure of tarsus II ............................................................................................................... B. cucunubensis

- Longer species, male L 8.2. Stridulatory comb of fore femur with 5 teeth. Fore and middle legs with preapical structure of tarsus II (see Padilla-Gil, 2010a, fig. 3e) .............................................................................................. B. burtsa

9 Stridulatory comb of fore tibia with 50 irregular teeth; rostral prong originates in distal end of third rostral segment, laterally stands out on terminal segment and has a round apex (see Padilla-Gil, 2010a, figs. 1a–c) ..... B. tumaquensis

- Stridulatory comb of fore tibia with 24–38 teeth........................................................................................................ 10

10 Rostral prong is projected anteriorly at distal end of third rostral segment ( Fig. 1 ).................................................. 11

- Rostral prong is not projected anteriorly at distal end of third rostral segment.......................................................... 12

11 Longer species, male L 7.6−7.8. Stridulatory area of fore tibia with 30 teeth; stridulatory comb of fore femur have 17−20 teeth; dorsal apex of middle tibiae with two rows of four transparent setae ( Figs 1−6 ); fore and middle tarsus bearing preapical structure ( Fig. 5 ) ......................................................................................................... B. uselus n. sp.

- Smaller species, male L 4.6–5.7. Stridulatory area of fore tibia with 35 teeth; stridulatory comb of fore femur has 11−14 teeth; dorsal apex of middle tibiae lacking of setae; fore and middle tarsus lacking preapical structure............ ................................................................................................................................................................ B. platycnemis

12 Rostral prong originate in half or basal part from third rostral segment; stridulatory area of fore femur with 17 ridges .................................................................................................................................................................................... 13

- Rostral prong originate in apex or 1/3 apical from third rostral segment, stridulatory area of fore femur with 5−6 ridges........................................................................................................................................................................... 14

13 Rostral prong distinctly longer than third rostral segment, with base originating laterally near to base of third rostral segment. Scutellum with median length equal or less than that of pronotum. Fore femur somewhat thickened at apex ....................................................................................................................................................................... B. pallipes

- Rostral prong is slightly shorter or similar to long of third rostral segment, with base originating laterally midway of third segment. Scutellum with median length greater than that of pronotum. Fore femur neither wide nor thickened at apex ............................................................................................................................................................. B. pallens

14 Short species L: 6.7−7.5; stridulatory comb of fore tibia with 26 teeth. Rostral prong originates in 1/3 apical of third rostral segment and has a round apex .............................................................................................................. B. nieseri

- Large species L: 7.7−8.1; stridulatory comb of fore tibia show 35 teeth. Rostral prong originates in proximal end of third rostral segment and has a round apex (see Padilla-Gil, 2010a, Figs. 2 a–c) ........................................ B. anomala

15 Inner margins of eyes convergent towards posterior part; tylus not inflated. Fore tibia with stridulatory comb of 18– 20 teeth, and all have nearly same size ............................................................................................................ B. salutis

- Inner margins of eyes nearly straight; tylus very inflated. Fore tibia with stridulatory comb of 24–32 teeth of different sizes ............................................................................................................................................................ B. similis

Figures

FIGURES 1 − 6. Buenoa uselus sp. n. male. 1 Rostrum in lateral view; 2 Fore leg; 3 Femoral comb (400 X); 4 Tibial comb (400 X); 5 Preapical structure of fore tarsus II; 6 Dorsal apex of middle tibia.