Dihammaphora, Chevrolat, 1859

Key to species of Dihammaphora View in CoL with 11 antennal segments

(modified from Napp & Mermudes (2010))

1. Inner side of each procoxa with a small unciform projection with apex turned down and inwards.Anterior margin of prosternum with a small median projection........................................................................... 2

- Procoxae without such projection. Anterior margin of prosternum not projected.................................... 3

2. Entirely black. Brazil (São Paulo, Paraná, Santa Catarina), Paraguay (Alto Parana)....... D. falsa Napp & Mermudes, 2010 View in CoL

- Prothorax reddish. Pronotum with a black area enlarged from apex to base where it almost reaches the sides of the prothorax. Brazil (Minas Gerais, São Paulo)............................................ D. uncinata Napp & Mermudes, 2010 View in CoL

3. Pronotum bicolorous.................................................................................. 4

- Pronotum unicolorous................................................................................. 5

4. Pronotum reddish with a transverse black band posteriorly. Brazil (Goiás).................... D. scutata Gounelle, 1911 View in CoL

- Pronotum with ill-defined, transverse rufous patch adjacent to the broad black fascia occupying middle third of the disc. Bolivia (Tarija)..................................................................... D. pilcomayoensis Clarke, 2015 View in CoL

5. Pronotum entirely black................................................................................ 6

- Pronotum entirely orangish or reddish..................................................................... 7

6. Elytra with sparse silver pubescence. Abdominal ventrites with dense silver pubescence covering most of the integument. Venezuela (Merida).................................................................. D. meridensis sp. nov.

- Elytra with than minute or slightly longer whitish setae and long, erect, thick yellowish setae. Abdominal ventrites with abundant, long, erect pale-yellow setae, not obscuring the integument. Ecuador (Manabí).................................................................................................. D. erecta Bezark & Santos-Silva, 2023 View in CoL

7. Prothorax with yellowish pubescence..................................................................... 8

- Prothorax glabrous or silky............................................................................. 9

8. Elytra not or barely impressed posteriorly, without dorsal costae; dark brown with sparse whitish pubescence. Pronotum with sparse yellowish pubescence evenly distributed. Brazil (Minas Gerais), Bolivia............. D. gracicollis Chevrolat, 1859 View in CoL

- Elytra conspicuously depressed posteriorly; dorsal costae prominent from base almost to apex; from brown to almost orangish with dense silky, whitish to yellowish pubescence obscuring integument. Pronotum with silky, yellowish pubescent band on each side. Brazil (Bahia, Minas Gerais, Espírito Santo), Paraguay................. D. brasileira Napp & Mermudes, 2010 View in CoL

9. Frons dark brown, vertex and ventral margin of the head orangish, forelegs sepia black. Prothorax orangish. Bolivia (Santa Cruz)........................................................................ D. dilmanappae Clarke, 2015 View in CoL

- Head totally black or with occiput yellowish and forelegs black or dark brown. Prothorax reddish.................... 10

10. Dorsal costae of elytra attaining, at most, the middle........................................................ 11

- Dorsal costae of elytra prominent from base almost to apex................................................... 13

11. Elytra with whitish pubescence, not obscuring integument. Metatibiae sinuate. Brazil (Pará, Rondônia), Bolivia.......................................................................................... D. perforata (Klug, 1825) View in CoL

- Elytra glabrous or almost glabrous. Metatibiae straight....................................................... 12

12. Clypeal suture missing. Antennomeres III– V subserrate. Femoral peduncles barely sulcate. Panama, Colombia (Atlántico, Cundinamarca, Bolivar , Magdalena)............................................... D. ibirajarai Mermudes, 1998 View in CoL

- Clypeal suture rather weak. Antennomeres III– V almost filiform. Femoral peduncles distinctly sulcate. Bolivia (Santa Cruz)............................................................................ D. paraperforata Clarke, 2015 View in CoL

13. Elytra glabrous; margins not crenulate posteriorly. Brazil (Amazonas, Pernambuco, São Paulo, and Rio de Janeiro)....................................................................................... D. nitidicollis Bates, 1870 View in CoL

- Elytra pubescent; margins crenulate posteriorly............................................................ 14

14. Elytra with very short whitish pubescence not obscuring surface. Brazil (Rio de Janeiro, São Paulo).................................................................................................. D. ruficollis Chevrolat, 1859 View in CoL

- Elytra densely pubescent, pubescence partially or totally obscuring punctures.................................... 15

15. Elytra with silky, olivaceous pubescence. Ventral body surface, except prosternum, with silky, olivaceous pubescence totally obscuring the integument. Prothorax rounded at sides, widest centrally. Femoral peduncles conspicuously sulcate and carinate. Brazil (Minas Gerais)...................................................... D. mineira Napp & Mermudes, 2010 View in CoL

- Elytra with whitish pubescence. Ventral body surface, except prosternum, with whitish pubescence not obscuring the integument. Prothorax subparallel-sided. Femoral peduncles shallowly, slightly conspicuously sulcate. Nicaragua, Costa Rica, Panamá................................................................................. D. chontalensis Bates, 1872 View in CoL