Elytroleptus

GRZYMALA, TRACI L. & MILLER, KELLY B., 2013, Taxonomic Revision and Phylogenetic Analysis of the Genus Elytroleptus Dugés (Coleoptera: Cerambycidae: Cerambycinae: Trachyderini), Zootaxa 3659 (1), pp. 1-62 : 13

Key to the species of the genus Elytroleptus

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 )...................... 2

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

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

- 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)

- 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 ). Fig. 17 . Mexico – Guatemala........................ E. scabricollis Bates

- 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 ). Fig. 12. Northwestern Mexico– Honduras.................. E. luteus Dugés

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

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

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

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

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

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

9 Elytra laterally expanded apically ( Fig. 28a ). Fig. 16 . Southwestern USA – Mexico................ E. rufipennis (LeConte)

- Elytra not laterally expanded apically ( Fig. 28b )............................................................ 10

10 Males with sexually dimorphic gland pores on lateral areas of pronotum ( Fig. 27b ); elytral punctation large and deep ( Fig. 30a ). Fig. 18 . Central Mexico ..................................................... E. similis Chemsak & Linsley

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

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)

- 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

13 Elytra concolorous black. Fig. 13. Southwestern Mexico ........................................ E. nigripennis Bates

- 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 ). Fig. 15. Central Mexico– Guatemala.......................... E. quadricostatus sp. nov. Grzymala & Miller

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

Figures

FIGURES 25–28. 25a) Character 2, State 0, antennal length in males reaching to less than half elytral length, 25b) Character 2, State 1, antennal length in males reaching to more than half elytral length, but not past elytral apices; 26a) Character 4, State 0, pronotal pubescence only with thin pubescence, 26b) Character 4, State 1, pronotal pubescence with thin pubescence and lines

FIGURES 16–18. Dorsal habitus of Elytroleptus rufipennis (LeConte) (16), Elytroleptus scabricollis Bates (17), and

FIGURES 19–20. 19a) Character 1, State 0, genal length less than width, 19b) Character 1, State 1, genal length equal to width; 20a) Character 3, State 1, ultimate antennomere slightly appendiculate, 20b) Character 3, State 2, ultimate antennomere

FIGURES 29–30. 29a) Character 16, State 0, each elytron with three costae, 29b) Character 16, State 1, each elytron with four costae; 30a) Character 17, State 0, large, deep elytral punctation, 30b) Character 17, State 1, medium, moderate elytral punctation, 30c) Character 17, State 2, small, shallow elytral punctation.