Aegopsis Burmeister, 1847

Sobral, Rafael, Grossi, Paschoal C. & De Morais, José W., 2018, Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae) from the central Brazilian Cerrado, Zootaxa 4526 (2), pp. 175-194 : 192-193

Key to species of Aegopsis Burmeister, 1847

(Male key modified from Dechambre & Grossi 1990)

1. Head and pronotum with horns, pronotal horn reduced in minor specimens (e.g., Figs 1 A–B, 9A–B, 10A–B) (males)..... 2

- Head and pronotum without horns (e.g., Figs 1C , 9C , 10C ) (females)............................................ 7

2. Protibia with four external teeth, basal tooth sometimes reduced. Pronotum with disc strongly convex in major males................................................................................. A. curvicornis Burmeister, 1847

- Protibia with three external teeth. Pronotum with disc slightly convex............................................ 3

3. Base of cephalic horns connected by a curved carina. Lateral carina of parameres not reaching apex of parameres in lateral view......................................................................... A. peruvianus Arrow, 1941

- Base of cephalic horns with no connecting carina. Lateral carina of parameres reaching apex of parameres in lateral view.. 4

4. Apex of parameres less than one time longer than base of parameres ( Fig. 12A ). Mentum round ( Fig. 12B )........................................................................................ A. chaminadei Dechambre, 1999

- Apex of parameres about two times longer than base of parameres ( Fig. 6C, F, I ). Mentum subrectangular or subtriangular ( Fig. 5D, E, F )....................................................................................... 5

5. Clypeus with round apex ( Fig. 2C ). Ocular canthi protruding anteriorly ( Fig. 3C ). Apical corners of mentum carinate ( Fig. 5E )................................................................. A. diceratops Sobral & Grossi , new species

- Clypeus apex truncate or slightly emarginate ( Fig. 2A, E ). Ocular canthi not protruding ( Fig. 3A, E ). Mentum lacking carina ( Fig. 5D, F ).......................................................................................... 6

6. Punctures on posterior angles of pronotum with no micropunctures between them ( Fig. 2B ). Mandibles with apical protuberance near external carina ( Fig. 5A ). Mentum subrectangular ( Fig. 5D ). Parameres, in lateral view, narrower than apex of phallobase ( Fig. 6A )........................................................... A. bolboceridus ( Thomson, 1860)

- Punctures on posterior angles of pronotum with micropunctures between them ( Fig. 2F ). Mandibles with no apical protuberance ( Fig. 5C ). Mentum subtriangular ( Fig. 5F ). Parameres, in lateral view, almost as thick as apex of phallobase ( Fig. 6G )................................................................ A. vazdemelloi Sobral & Grossi , new species

7. Protibia with four external teeth, basal tooth sometimes reduced...................... A. curvicornis Burmeister, 1847

- Protibia with three external teeth......................................................................... 8

8. Ocular canthi round, canthi apex posteriorly almost indistinct. Galea triangular, apex recurved.. A. peruvianus Arrow, 1941

- Ocular canthi convex, canthi apex posteriorly distinct. Galea trapezoidal, apex straight.............................. 9

9. Clypeus trapezoidal ( Fig. 7C ). Frons with two strong tubercles ( Fig. 7D ). Punctures absent on disc of vertex ( Fig. 7C )....................................................................... A. diceratops Sobral & Grossi , new species

- Clypeus round ( Fig. 7A, E ). Frons with two inconspicuous tubercles ( Fig. 7B, F ). Punctures present on disc of vertex ( Fig. 7A, E )................................................................................................ 10

10. Vertex with deeper and coalescent punctures ( Fig. 7E ). Distance from canthi carina to canthi apex longer than canthi thickness. Sensorial area of maxillary palpi rugose ( Fig. 4I )........................ A. vazdemelloi Sobral & Grossi , new species

- Vertex with shallower and annular punctures ( Fig. 7A ). Distance from canthi carina to canthi apex subequal to canthi thick- ness. Sensorial area of maxillary palpi striate ( Fig. 4C )............................ A. bolboceridus ( Thomson, 1860)

Figures

FIGURE 1. Habitus of Aegopsis bolboceridus. A, Major male in dorsal view; B, minor male in dorsal view; C, female in dorsal view. Scale bars: 3 mm.

FIGURE 2. A, Head of Aegopsis bolboceridus male, in dorsal view; B, pronotum of Aegopsis bolboceridus male, in dorsal view; C, head of Aegopsis diceratops male, in dorsal view; D, pronotum of Aegopsis diceratops male, in dorsal view; E, head of Aegopsis vazdemelloi male, in dorsal view; F, pronotum of Aegopsis vazdemelloi male, in dorsal view. Black arrow indicating emarginate apex of clypeus in A, E; white arrow indicating micropunctures on pronotum in F. Scale bars: A, C, F, 2 mm; B, D, E, 3 mm.

FIGURE 3. A, Canthus of Aegopsis bolboceridus male, in dorsal view; B, canthus of Aegopsis bolboceridus female, in dorsal view; C, canthus of Aegopsis diceratops male, in dorsal view; D, canthus of Aegopsis diceratops female, in dorsal view; E, canthus of Aegopsis vazdemelloi male, in dorsal view; F, canthus of Aegopsis vazdemelloi female, in dorsal view. White arrow indicating apex inconspicuous of canthi carina in A; black arrows indicating canthi carina split in C; black arrow indicating apex conspicuous of canthi carina in E; black arrows indicating external edge of canthi in B, D, F. Scale bars: 0.5 mm.

FIGURE 4. A, Labrum of Aegopsis bolboceridus male, in dorsal view; B, maxillary palpomere IV of Aegopsis bolboceridus male, in dorsal view; C, maxillary palpomere IV of Aegopsis bolboceridus female, in dorsal view; D, labrum of Aegopsis diceratops male, in dorsal view; E, maxillary palpomere IV of Aegopsis diceratops male, in dorsal view; F, maxillary palpomere IV of Aegopsis diceratops female, in dorsal view; G, labrum of Aegopsis vazdemelloi male, in dorsal view; H, maxillary palpomere IV of Aegopsis vazdemelloi male, in dorsal view; I, maxillary palpomere IV of Aegopsis vazdemelloi female, in dorsal view. Arrows indicating the middle of the labrum in A, G; arrows indicating sensorial area in C, I. Scale bars: 0.5 mm.

FIGURE 5. A, Mandible of Aegopsis bolboceridus male, in ventral view; B, mandible of Aegopsis diceratops male, in ventral view; C, mandible of Aegopsis vazdemelloi male, in ventral view; D, mentum of Aegopsis bolboceridus male, in ventral view; E, mentum of Aegopsis diceratops male, in ventral view; F, mentum of Aegopsis vazdemelloi male, in ventral view. Arrows indicating respectively apical protuberance and protuberance on internal lobe in A; Arrows indicating the internal lobe in B, C; arrow indicating the mentum carina in E. Scale bars: 0.5 mm.

FIGURE 6. A, Aedeagus of Aegopsis bolboceridus, in lateral view; B, parameres of Aegopsis bolboceridus, in ventral view; C, parameres of Aegopsis bolboceridus, in dorsal view; D, aedeagus of Aegopsis diceratops in lateral view; E, parameres of Aegopsis diceratops in ventral view; F, parameres of Aegopsis diceratops in dorsal view; G, aedeagus of Aegopsis vazdemelloi in lateral view; H, parameres of Aegopsis vazdemelloi in ventral view; I, parameres of Aegopsis vazdemelloi in dorsal view. White arrows in the left indicating ventral carina of parameres in B, E, H; white arrows upward indicating inferior edge of parameres in B, E, H. Scale bars: A, D, G, 1 mm; B, C, E, F, H, I, 0.5 mm.

FIGURE 7. A, Head of Aegopsis bolboceridus female in dorsal view; B, head of Aegopsis bolboceridus female in lateral view; C, head of Aegopsis diceratops female in dorsal view; D, head of Aegopsis diceratops female in lateral view; E, head of Aegopsis vazdemelloi female in dorsal view; F, head of Aegopsis vazdemelloi female in lateral view. Black arrow indicating head punctures in A; black arrow indicating clypeus trapezoidal in C; white arrow indicating vertex in C; black arrow indicating frontal tubercles in D; white arrow indicating head punctures in E. Scale bars: 1 mm.

FIGURE 9. Habitus of Aegopsis diceratops. A, Major male in dorsal view; B, minor male in dorsal view; C, female in dorsal view. Scale bars: 3 mm.

FIGURE 10. Habitus of Aegopsis vazdemelloi. A, Major male in dorsal view; B, minor male in dorsal view; C, female in dorsal view. Scale bars: 3 mm.

FIGURE 12. A, Parameres of Aegopsis chaminadei in dorsal view; B, mentum of Aegopsis chaminadei in ventral view. Scale bars: 0.5 mm.