Polyplectropus bredini

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 111-112

Key to males of P. bredini species group

1 Intermediate appendage narrow and elongate; bearing setae throughout ( Figs. 37, 45).................. 2

- Intermediate appendage broader as usually not longer than inferior appendage ( Fig. 36A), or if narrow curved ventrad ( Fig. 55A); setae present basally, apically or both ( Figs. 36, 43, 55)......................... 10

2 Dorsolateral process of preanal appendage present ( Fig. 46)....................................... 3

- Dorsolateral process of preanal appendage absent ( Fig. 37)....................................... 5

3(2) Inferior appendage with peg-like setae on either branch or both ( Figs. 46, 49)......................... 4

- Inferior appendage lacking peg-like setae on both branches ( Fig. 45)...... P. kingsolveri Bueno-Soria , p. 92

4(3) Dorsal branch of inferior appendage lacking peg-like setae ( Fig. 46)...... P. maesi Chamorro-Lacayo , p. 94

- Dorsal and ventral branches of inferior appendage with peg-like setae ( Fig. 49)........................................................................................ P. misolja Bueno-Soria , p. 99

5(2) Dorsal branch of inferior appendage greatly narrowed, sinuate and elongate; not L-shaped ( Fig. 47)........................................................................ P. mathisi Bueno-Soria , p. 96

- Dorsal branch of inferior appendage not more than 3 x longer than wide (when measured from widest part of branch) and not as above ( Figs. 50, 52)....................................................... 6

6(5) Dorsal branch not L-shaped............................................................... 7

- Dorsal branch of inferior appendage abruptly angled, L-shaped ( Fig. 52)...................................................................... P. perpendicularis Chamorro-Lacayo & Holzenthal , p. 104.

7(6) Dorsal and ventral branches of inferior appendage with peg-like setae; mesoventral process quadrate in lateral view................................................................................... 8

- Ventral branch of inferior appendage lacking peg-like setae; mesoventral process rounded ( Fig. 50)............................................................. P. nicaraguensis Chamorro-Lacayo , p. 101.

8(7) Peg-like setae on dorsal branch as long as wide; apex of dorsal branch narrowed ( Fig. 48)............... 9

- Peg-like setae on dorsal branch at least 2 x longer than wide; apex of dorsal branch not narrowed, scalloped ( Fig. 37)............................................................... P. bredini Flint , p. 75.

9(8) Dorsal branch basally broader than apex; peg-like setae restricted to apex ( Figs. 48 A-E).............................................................................. P. mignonae Bueno-Soria , p. 97.

- Dorsal branch basally as broad as apex; peg-like setae located apically and subapically ( Figs. 48F–H).......................................................................... P. adamsae , n. sp., p. 77.

10 Dorsolateral process of preanal appendage present; mesoventral processes of preanal appendage not fused completely ( Figs. 36, 55)................................................................. 11

- Dorsolateral process of preanal appendage absent; mesoventral processes of preanal appendage apically fused completely into rounded structure ( Figs. 51, 53)............................................... 17

11(10) Dorsal and ventral branches of inferior appendage shallowly fused, appearing as a single structure; “mitten- shaped” ( Figs. 39, 55).................................................................... 12

- Dorsal and ventral branches of inferior appendage well defined ( Fig. 54)........................... 14

12(11) Dorsolateral process elongate ( Fig. 35)...................................................... 13

- Dorsolateral process short ( Fig. 55)........................................ P. woldai , n. sp., p. 110.

13(12) Mesoventral process of preanal appendage narrow (when viewed caudally), both processes meet mesally, not fused ( Fig. 35C); ventral branch of inferior appendage with fewer than 3 apical peg-like setae ( Fig. 35)....................................................................... P. brasilensis , n. sp., p. 78.

- Mesoventral process of preanal appendage broad (when viewed caudally); ventral branch of inferior appendage with more than 3 apical peg-like setae ( Figs. 39, 40)..... P. clauseni Chamorro-Lacayo & Holzenthal , p. 82.

14(11) Intermediate appendage not forming an entire structure with mesoventral process of preanal appendage ( Fig. 41)................................................................................... 15

- Intermediate appendage forming an entire structure with mesoventral process of preanal appendage, ventrally fused into a highly sclerotized bifurcating process ( Fig. 54)................... P. trilobatus Flint , p. 108.

15(14) Ventral branch of inferior appendage with peg-like setae; mesoventral process of preanal appendage with peglike setae.............................................................................. 16

- Ventral branch of inferior appendage without peg-like setae; mesoventral process of preanal appendage with a basal dorsal digitate lobe and lacking peg-like setae ( Fig. 41)................ P. colombianus , n. sp., p. 85.

16(15) Posterior margin of tergum VIII with a pair of digitate processes; mesoventral process of preanal appendage with few (<4) peg-like setae; apex of intermediate appendage slightly sculptured, rounded ( Fig. 42)......................................................................... P. corniculatus , n. sp., p. 87.

- Posterior margin of tergum VIII unmodified; mesoventral process of preanal appendage with many (>6) peglike setae; apex of intermediate appendage sclerotized, acute ( Fig. 43).......... P. flintorum , n. sp., p. 89.

17(10) Inferior appendage without peg-like setae; mesoventral process of preanal appendage without broadened, basal dorsal digitate lobe; dorsal branch of inferior appendage oblong ( Fig. 51). P. panamensis Bueno-Soria , p. 103. - Inferior appendage with peg-like setae; mesoventral process of preanal appendage with broadened, basal digitate lobe; dorsal branch of inferior appendage deltoid to quadrate ( Fig. 53)...... P. petrae , n. sp., p. 106.