Key to the species of Lepturgantes Gilmour

1. Apical 2/3 or half of the lateral margins of the elytra with seriate short setae ............................................2

– Only the apical 1/3 of the lateral margins of the elytra with very sparse non-seriate short setae..............6

2. Elytral apices subtruncate or truncate, without spines.................................................................................3

– Elytral apices transversely or obliquely notched, with both angles acute and usually projected as a short spine.............................................................................................................................................................4

3. Elytra with yellowish-gray pubescence, partially organized in longitudinal fasciae. Brazil (Rondônia, Mato Grosso, Goiás, Bahia, São Paulo), Paraguay (Fig. 3) ...................... L. flavovittatus (Gilmour, 1959)

– Elytra with rounded maculae of dark-brownish pubescence surrounded by gray pubescence. Mexico (Ver- acruz, Oaxaca, Chiapas), Guatemala, Costa Rica (Fig. 4) ................................ L. pacificus Gilmour, 1960

4. Elytral pubescence mostly ochraceous and arranged into narrow longitudinal fasciae. Venezuela, French Guiana, Brazil (Rondônia, Mato Grosso) (Fig. 7) ................................................ L. seriatus Monné, 1988

– Elytral pubescence otherwise colored and patterned...................................................................................5

5. Basal half of the elytra with mostly gray pubescence. Brazil (Amazonas, Mato Grosso), Bolivia (Fig. 1).. ............................................................................................................................ L. candicans (Bates, 1863)

– Basal half of the elytra with mostly dark-brownish pubescence. Brazil (Amazonas, Mato Grosso) (Fig. 2) ............................................................................................................................... L. dilectus (Bates, 1863)

6. Metafemora subclavate; elytral length approximately 2.5 times (at most) as long as humeral width........7

– Metafemora linear; elytral length about 3 times as long as humeral width. Brazil (Mato Grosso, Mato Grosso do Sul, Bahia to Santa Catarina), Bolivia (Fig. 5) .............................................. L. prolatus sp. nov.

7. Elytral pubescence dark brown, with whitish-gray stripes and jagged patches over entire surface. Brazil (Bahia, Minas Gerais, Espírito Santo) (Fig. 6) ........................................ L. septemlineatus Gilmour, 1960

– Elytral pubescence dark brown, basal third with brownish patches, and apical half with whitish-gray stripes. Brazil (Bahia, São Paulo, Paraná, Santa Catarina), Paraguay (Fig. 8) L. variegatus Gilmour, 1957