Key to females of Bothynus entellus species group

Females have an evenly convex pronotal surface and simple anterior claws that are not enlarged. Females of B. condacki and B. lancifer are unknown.

1. Pronotal concavity or apical tubercle distinct (Fig. 10A, C–D); tergite VIII with emarginate apical invagination (Fig. 11A, C) ................................................................................................... 2

- Pronotal concavity and apical tubercle indistinct (Fig. 10B); tergite VIII with rounded apical invagination (Fig. 11B)........................................................................... Bothynus stenelus (Burmeister, 1847) .

2. Pronotal surface evenly punctate......................................................................... 3

- Pronotum with punctures confined to anterior and lateral areas; concavity weakly punctate; discal area smooth (Fig. 10D)................................................................. Bothynus araya Duarte & Grossi, new species

3. Pronotal concavity moderately punctate (Fig. 10A); apical invagination transverse, approximately 4.4 times wider than long (Fig. 11A)..................................................... Bothynus entellus (LePeletier & Serville, 1828)

- Pronotal concavity densely covered with coalescent punctures (Fig. 10C); apical invagination transverse, approximately 7.9 times wider than long, broadly emarginate (Fig. 11C)................................ Bothynus tricornis Arrow, 1937