Key to the species of Pycnoderes from Colombia

1. Embolium yellowish with outer margin black................................................... P. columbiensis

1’. Embolium not as above................................................................................ 2

2. Embolium dark brown to black with apical white spot. Hemelytra with a cross-shaped mark on overlapping membranes................................................................................................. P. atratus

2’. Embolium and hemelytra not as above.................................................................... 3

3. Posterior pronotal lobe with longitudinal median sulcus, appearing to divide the lobe into two humps................... 4

3’. Posterior pronotal lobe lacking such sulcus or with slight longitudinal median sulcus, not appearing to divide the lobe into two humps.............................................................................................. 5

4. Protuberance on right paramere before sensory lobe bifurcate................................... P. quadrimaculatus

4’. Protuberance on right paramere before sensory lobe elongate, not bifurcate............................... P. incurvus

5. Hemelytral membrane longitudinally fuscus near posterior margin................................. P. chinchinaensis

5’. Hemelytral membrane not as above....................................................................... 6

6. Head black with white areas. Hind femur and tibia white.......................................... P. antioquiensis

6’. Head black with brown areas. Hind femur with proximal half white and distal half dark brown to black; hind tibia brown to black.................................................................................... P. guaranianus