Elytroleptus

Key to the species of the genus Elytroleptus View in CoL

Males, which are easier to diagnose than females, can be distinguished by the absence of transverse rows of spatula-like setae on the last abdominal segment.

1 Pronotal disc without two distinct longitudinal bands of appressed, dense pubescence ( Fig. 26a View FIGURES 25–28 )...................... 2

- Pronotal disc with two distinct longitudinal band of appressed, dense pubescence ( Fig. 26b View FIGURES 25–28 ).......................... 5

2 Elytra with basal ¼ or less testaceous. Fig. 8. Northern Mexico ................................. E. humeralis Linsley View in CoL

- Elytra with basal ½ or entire elytra testaceous to pale yellow................................................... 3

3 Body covered in decumbent pubescence; usually 3 (occasionally 4) punctures medially between suture and costa I. Fig. 5. Southwestern USA –northeastern Mexico................................................... E. divisus (LeConte) View in CoL

- Body covered in erect pubescence; 4–5 punctures medially between suture and costa I............................... 4

4 Body covered in long, erect pubescence; pronotal disc with calli present; males without dorso-lateral pronotal areas densely punctate, indicative of gland pores ( Fig. 27a View FIGURES 25–28 ). Fig. 17 View FIGURES 16–18 . Mexico – Guatemala........................ E. scabricollis Bates View in CoL

- Body covered in short, erect pubescence; prontal disc without calli present; males with dorso-lateral pronotal areas densely punctate, indicative of gland pores ( Fig. 27b View FIGURES 25–28 ). Fig. 12. Northwestern Mexico– Honduras.................. E. luteus Dugés View in CoL

5 Longitudinal bands of appressed pubescence with coloration similar to central pronotal disc.......................... 6

- Longitudinal bands of appressed pubescence with coloration different from central pronotal disc....................... 8

6 Abdominal sterna black. Fig. 11. Southwestern USA................................. E. limpianus Skiles & Chemsak View in CoL

- Abdominal sterna testaceous............................................................................. 7

7 Males with extremely appendiculate apical antennomeres ( Fig. 20d View FIGURES 19–20 ) and sexually dimorphic gland pores on pronotum present; elytra with small, shallow punctation ( Fig. 30c View FIGURES 29–30 ). Fig. 4. Southwestern USA–northern Mexico......... E. apicalis (LeConte) View in CoL

- Males with moderately appendiculate apical antennomeres ( Fig. 20b View FIGURES 19–20 ) and sexually dimorphic gland pores on pronotum absent; elytra with medium, moderate elytral punctation ( Fig. 30b View FIGURES 29–30 ). Fig. 9. Southwestern USA –northern Mexcio E. ignitus (LeConte) View in CoL

8 Elytra without any areas black........................................................................... 9

- Elytra with at least some areas black..................................................................... 11

9 Elytra laterally expanded apically ( Fig. 28a View FIGURES 25–28 ). Fig. 16 View FIGURES 16–18 . Southwestern USA – Mexico................ E. rufipennis (LeConte) View in CoL

- Elytra not laterally expanded apically ( Fig. 28b View FIGURES 25–28 )............................................................ 10

10 Males with sexually dimorphic gland pores on lateral areas of pronotum ( Fig. 27b View FIGURES 25–28 ); elytral punctation large and deep ( Fig. 30a View FIGURES 29–30 ). Fig. 18 View FIGURES 16–18 . Central Mexico ..................................................... E. similis Chemsak & Linsley View in CoL

- Males without sexually dimorphic gland pores on lateral areas of pronotum ( Fig. 27a View FIGURES 25–28 ); elytral punctation medium in size and moderate in depth ( Fig. 30b View FIGURES 29–30 ). Fig. 14. Mexico............................................. E. pallidus (Thomson) View in CoL

11 Elytra not apically expanded laterally; smaller specimens, less than 11mm ....................................... 12

- Elytra apically expanded laterally; larger specimens, more than 11mm ........................................... 13

12 Pronotal disc with two longitudinal lines of dense, appressed testaceous pubescence overlying testaceous integument. Fig. 6. Eastern USA –southwestern USA....................................................... E. floridanus (LeConte) View in CoL

- Pronotal disc with two longitudinal lines of dense, appressed white to pale yellow pubescence overlying red integument. Fig. 10. Southwestern USA –west central Mexico............................................. E. immaculipennis Knull View in CoL

13 Elytra concolorous black. Fig. 13. Southwestern Mexico ........................................ E. nigripennis Bates View in CoL

- Elytra not concolorous black............................................................................ 14

14 Apical areas of elytra black without transverse black band medially; elytral punctation medium sized and moderately deep ( Fig. 30b View FIGURES 29–30 ). Fig. 15. Central Mexico– Guatemala.......................... E. quadricostatus View in CoL sp. nov. Grzymala & Miller

- Apical areas of elytra black with transverse black band medially; elytral punctation small and shallow ( Fig. 30c View FIGURES 29–30 ). Fig. 7. Central Mexico– Costa Rica................................................................... E. grandis Linsley View in CoL