Key to species of Neocompsa Martins, 1965 currently known from Panama

1. Elytra lacking sericeous pubescence...................................................................... 2

– Elytra with sericeous pubescence......................................................................... 4

2(1). Each elytron with a single yellowish macula. Costa Rica, Panama, Colombia, Ecuador, Peru, Bolivia (Santa Cruz), French Guiana, Brazil (Amazonas, Maranh„o, Bahia, Espírito Santo, Rio de Janeiro, Paraná)............ N. lineolata (Bates, 1870)

– Each elytron with two or three whitish maculae............................................................. 3

3(2). Anterior yellowish macula subrounded or elliptical; posterior yellowish macula not longitudinal, often divided into two close maculae. Costa Rica, Panama, Colombia ............................................... N. glaphyra Martins, 1970

– Anterior and posterior yellowish maculae distinctly longitudinal. Costa Rica, Panama, Ecuador ........................................................................................................ N. aspasia Martins, 1974

4(1). Elytral pubescence not covering a developed humeral area; elytral apex unarmed. Guatemala, Honduras, Nicaragua, Costa Rica, Panama, Colombia ........................................................... N. tuberosa Martins, 1970

– Elytral pubescence covering the entire surface; elytral apex with spine........................................... 5

5(4). Prosternal pubescence restricted to the area near to the procoxal cavities, remaining surface shining. Costa Rica, Panama .................................................................................. N. ventricosa (Bates, 1885)

– Prosternal pubescence present at least on posterior third....................................................... 6

6(5). Setae on ventral surface of the basal antennomeres slightly longer than diameter of the antennomere; elytral sericeous pubescence very dense. Panama ........................................................... N. sericans (Bates, 1885)

- At least some setae on ventral surface of the basal antennomeres distinctly longer than diameter of the antennomere; elytral sericeous pubescence not noticeably dense. Mexico (Veracruz, Chiapas), Guatemala, Nicaragua, Costa Rica, Panamá, Colombia, Venezuela ..................................................................... N. squalida (Thomson, 1867)