Phrynidius, Lacordaire, 1869

Noguera, Felipe A. & Santos-Silva, Antonio, 2023, New species and records in Phrynidius Lacordaire (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 5323 (4), pp. 451-476 : 474-475

Key to species of Phrynidius

1. Elytra with distinct, short, erect spatulate setae ( e.g. Fig. 12)................................................. 2

- Elytra without erect spatulate setae ( e.g. Fig. 48), or with erect setae almost absent ( e.g. Fig. 24).................... 6

2(1). Antennal tubercles contiguous basally (e.g. Fig. 14)........................................................ 3

- Antennal tubercles not contiguous basally (e.g. Fig. 22)..................................................... 5

3(2). Erect setae on elytra present only apically. Guatemala................................... P. guatemalensis sp. nov.

- Erect setae on elytra abundant throughout................................................................ 4

4(3). Antennomere III 0.6 times longer than IV; sides of prothorax distinctly rounded ( Fig. 10). Honduras.. P. poriferus sp. nov.

- Antennomere III twice length of IV; sides of prothorax slightly rounded ( Fig. 14). Guatemala........ P. skillmani sp. nov.

5(2). Antennomere IV about as long as V and VI together ( Fig. 18). Honduras......................... P. obrieni sp. nov.

- Antennomere IV distinctly longer than V and VI together ( Figs 22, 27). Mexico ( Veracruz)........... P. wibmeri sp. nov.

6(1). Antennomere III at most as long as scape................................................................ 7

- Antennomere III longer than scape.................................................................... 14

7(6). Pronotum with distinct elevated anterocentral gibbosity ( e.g. Fig. 33).......................................... 8

- Pronotum without anterocentral gibbosity or anterocentral gibbosity almost indistinct ( e.g. Fig. 55).................. 9

8(7). Body stout ( Figs 29, 34); anterocentral gibbosity on the pronotum uniformly convex dorsally, not sinuous laterally ( Fig. 33). Mexico ( Oaxaca, Hidalgo)......................................................... P. pallifemoralis sp. nov .

- Body slender ( Figs 36, 40); anterocentral gibbosity on the pronotum irregular dorsally, sinuous laterally ( Fig. 38). Mexico ( Oaxaca)....................................................................... P. oaxacanensis sp. nov.

9(7). Scape longer than pedicel and antennomere III together.................................................... 10

- Scape shorter or as long as pedicel and antennomere III together............................................. 11

10(9). Elytra elongate, pubescent. Mexico ( Hidalgo; Veracruz, see also Volcán de Orizaba ( Veracruz and/or Puebla — Selander & Vaurie 1962).................................................................... P. inaequalis ( Say, 1835)

- Elytra ovoid, subglabrous. Mexico ( Chiapas)....................... P. diminutus Gutiérrez, Toledo & Noguera, 2020

11(9). Antennomere IV as long as V–VI together. Guatemala, Honduras, Nicaragua..................... P. asper Bates, 1885

- Antennomere IV shorter than V–VI together............................................................. 12

12(11). Scutellum more than twice as wide as long. Mexico, Guatemala........................... P. armatus Linsley, 1933

- Scutellum very small, almost as wide as long............................................................ 13

13(12). Antennal tubercles very close to each other basally, with the area between them V-shaped; prothorax longer than wide. El Salvador......................................................... P. salvadorensis salvadorensis Franz, 1954

- Antennal tubercles not very close to each other basally, with the area between them U-shaped; prothorax as wide as long. El Salvador, Honduras.............................................. P. salvadorensis montecristensis Franz, 1954

14(6). Elytra with large tubercle laterally after middle, with its base wider than apical width of metafemora. Mexico ( Chiapas)............................................................ P. tuberculatus Gutiérrez, Toledo & Noguera, 2020

- None of the elytral tubercles as wide at the base as the apex of the metafemora................................. 15

15(14). Apex of elytral tubercles glabrous..................................................................... 16

- Apex of elytral tubercles pubescent.................................................................... 17

16(15). Central tubercle of pronotum distinctly conical. Mexico ( Chiapas)......... P. jonesi Gutiérrez, Toledo & Noguera, 2020

- Central tubercle of pronotum uniformly convex. Guatemala, Honduras. P. guifarroi Santos-Silva, Van Roie & Jocqué, 2021

17(15). Antennal tubercles contiguous basally, with the area between them V-shaped................................... 18

- Antennal tubercles not contiguous basally, with the area between them U-shaped................................ 19

18(17). Antennomere III as long as scape. Mexico ( Chiapas).................. P. cristinae Gutiérrez, Toledo & Noguera, 2020

- Antennomere III longer than scape. Guatemala...................................... P. echinoides Breuning, 1940

19(17). Pronotum without strongly elevated central tubercle. Guatemala, Honduras, Costa Rica, Panama... P. echinus Bates, 1880

- Pronotum with strongly elevated central tubercle with convex apex........................................... 20

20(19). Width of lower eye lobes equal to basal width of scape. Mexico, Guatemala, Honduras......... P. singularis Bates, 1880

- Width of lower eye lobes greater than basal width of scape. Mexico ( Nayarit), Honduras............................................................................... P. nayaritensis Heffern, Nascimento & Santos-Silva, 2018