Cyclocephala species

Neita-Moreno, Jhon C., 2021, A review of the black species of Cyclocephala Dejean (Coleoptera: Scarabaeidae Dynastinae) from Colombia, Zootaxa 5026 (1), pp. 1-58 : 3-4

Key to adults of the black Cyclocephala species from Colombia

Males with protarsomeres and inner protarsal claws enlarged ( Figs. 1A, C, E ; 2A, C–D ; 3A–B, D ; 4A, C ) and female with protarsomeres and inner protarsal claws simple, not enlarged ( Figs. 1B, D, I ; 2B ; 3C ; 4B, D ).

1. Maxilla with 7 teeth, lacinia sclerotized ( Fig. 8A–D ). Epipharynx with 2 anterior lobes, apically notched ( Fig. 13A–D )......................................................................... Cyclocephala cribrata species group....2

1´. Maxilla with 6 teeth, lacinia not sclerotized ( Figs. 9B, D , 11A–D ). Epipharynx not anteriorly lobed, not apically notched ( Figs. 13A–B , 14F )......................................................................................... 4

2. Inner edge of metatibia without a longitudinal keel ( Fig. 16B ). Surface of pygidium with dense punctures ( Fig. 24B ). Male protibial claw with a basal tooth ( Fig. 19B )..................................... Cyclocephala proxima Dechambre

2´. Inner edge of metatibia with a longitudinal keel ( Fig. 19A, C ). Surface of pygidium with sparse punctures ( Fig. 24A, C ). Male protibial claw without a basal tooth ( Fig. 19B ).............................................................. 3

3. Metasternite with dense punctures. Female epipleuron weakly enlarged at level of first abdominal sternite ( Fig. 20C )................................................................ Cyclocephala rogerpauli Moore, Branham, & Cave

3´. Metasternite with sparse punctures. Female epipleuron weakly enlarged at level of second abdominal sternite ( Fig. 20A )........................................................................... Cyclocephala marqueti Dechambre

4. Base of pronotum with strong marginal bead (Fig. 32A). Mentum widely notched ( Fig. 12C–D ). Mandibles with thin apical setae ( Fig. 9A, C ). Maxilla with thin apical setae before galea ( Fig. 9B, D ). Wing vein AA 3 equal length to AA 4 ( Fig. 22A–C ). Anterior edge of the wing distal of apical hinge glabrous ( Fig. 22D )............ Cyclocephala fasciolata species group...5

4´. Base of pronotum lacking marginal bead ( Fig. 29B ). Mentum slightly notched ( Fig. 12E, F ). Mandibles with stout apical setae ( Fig. 10A–D ). Maxilla with stout apical setae before galea ( Fig. 11A–D ). Wing vein AA 3 shorted than AA 4 ( Fig. 23A–C ). Anterior edge of the wing distal of apical hinge setose behind apical hinge ( Fig. 23D )..................................................................................................... Cyclocephala ligyrina species group... 6

5. Lateral margin of clypeus without setae ( Fig. 25C ). Pygidium black ( Fig. 24D )........ Cyclocephala brevipennis Endrödi

5´. Lateral margin of clypeus with setae ( Fig. 25D ). Pygidium testaceous ( Fig. 24E )..................................................................................................... Cyclocephala santandereana new species

6 Punctate rows of elytra furrowed ( Fig. 3B, C )....................................... Cyclocephala kaszabi Endrödi

6´Punctate rows of elytra not furrowed ( Figs. 3A, D , 4A–D )..................................................... 7

7. Pygidium with dense punctures (rarely sparse) ( Fig. 24F–H )....................................................8

7.´Pygidium with sparse punctures ( Fig. 25A–B ).............................................................. 9

8. Metatibia on external face with 2 rows of setae, second row not crossing external face of metatibia ( Fig. 19F ).......................................................................................... Cyclocephala ligyrina Bates

8´. Metatibia on external face with 2 rows of setae, second row crossing external face of metatibia ( Fig. 19D )........................................................................................... Cyclocephala dalensi Ponchel

9. Pygidium with small, shallow punctures ( Fig. 25C ). Parameres as in Fig. 30A–C ..... Cyclocephala arhuacana new species

9´. Pygidium with large, deep punctures ( Fig. 25A ). Parameres as in Fig. 29E–F ............... Cyclocephala rufa Endrödi

Figures

FIGURE 1A–F. Cyclocephala cribrata species group. A, Cyclocephala marqueti male; B, Cyclocephala marqueti female; C, Cyclocephala proxima male; D, Cyclocephala proxima female; E, Cyclocephala rogerpauli male (holotype); F, Cyclocephala rogerpauli female. Scale bar = 10 mm.

FIGURE 2A–D. Cyclocephala fasciolata species group. A, Cyclocephala brevipennis male; B, Cyclocephala brevipennis female; C, Cyclocephala fasciolata male; D, Cyclocephala santandereana (holotype). Scale bar = 10 mm.

FIGURE 3A–D. Cyclocephala ligyrina species group. A, Cyclocephala dalensi male; B, Cyclocephala kaszabi male; C, Cyclocephala kaszabi female; D, Cyclocephala rufa male. Scale bar = 10 mm.

FIGURE 4A–D. Cyclocephala ligyrina species group. A, Cyclocephala ligyrina male; B, Cyclocephala ligyrina female; C, Cyclocephala arhuacana male (holotype); D, Cyclocephala arhuacana female (allotype). Scale bar = 10 mm.

FIGURE 8A–D. Adult maxillae. A, Cyclocephala marqueti (ventral view); B, Cyclocephala marqueti (dorsal view); C, Cyclocephala proxima (ventral view); D, Cyclocephala proxima (dorsal view). dpmst: dorsal process of mediostipes.

FIGURE 9A–D. Adult mandibles and maxillae. A, Cyclocephala brevipennis mandible (ventral view); B, Cyclocephala brevipennis maxilla (ventral view); C, Cyclocephala fasciolata mandible (dorsal view); D, Cyclocephala fasciolata maxilla (ventral view).

FIGURE 10A–D. Adult mandibles. A, Cyclocephala ligyrina (ventral view); B, Cyclocephala ligyrina (dorsal view); C, Cyclocephala arhuacana (ventral view); D, Cyclocephala arhuacana (dorsal view).

FIGURE 11A–D. Adult maxilla. A, Cyclocephala ligyrina (ventral view); B, Cyclocephala ligyrina (dorsal view); C, Cyclocephala arhuacana (ventral view); D, Cyclocephala arhuacana (dorsal view). dpmst: dorsal process of mediostipes.

FIGURE 12A–F. Adult labia. A, Cyclocephala marqueti; B, Cyclocephala proxima; C, Cyclocephala fasciolata; D, Cyclocephala brevipennis; E, Cyclocephala ligyrina; F, Cyclocephala arhuacana.

FIGURE 13A–F. Adult epipharynxes. A, Cyclocephala marqueti ventral view; B, Cyclocephala marqueti dorsal view; C, Cyclocephala proxima ventral view; D, Cyclocephala proxima dorsal view; E, Cyclocephala brevipennis ventral view; F, Cyclocephala brevipennis dorsal view.

FIGURE 14A–F. Adult epipharynxes. A, Cyclocephala fasciolata ventral view; B, Cyclocephala fasciolata dorsal view; C, Cyclocephala ligyrina ventral view; D, Cyclocephala ligyrina dorsal view; E, Cyclocephala arhuacana ventral view; F, Cyclocephala arhuacana dorsal view.

FIGURE 16A–J. Adult male large claw (lateral view). A, Cyclcephala marqueti; B, Cyclocephala proxima; C, Cyclocephala brevipennis; D, Cyclocephala fasciolata; E, Cyclocephala santandereana (holotype); F, Cyclocephala dalensi; G, Cyclocephala kaszabi; H, Cyclocephala ligyrina; I, Cyclocephala rufa; J, Cyclocephala arhuacana (holotype). Scale bar = 0.2 mm.

FIGURE 19A–H. Metatibiae (dorsal view). A, Cyclocephala marqueti; B, Cyclocephala proxima; C. Cyclocephala rogerpauli; D, Cyclocephala dalensi; E, Cyclocephala kaszabi; F, Cyclocephala ligyrina; G, Cyclocephala rufa; H, Cyclocephala arhuacana. Scale bar = 0.5 mm.

FIGURE 20A–G. Female epipleura (ventral view). A, Cyclocephala marqueti; B, Cyclocephala proxima; C, Cyclocephala rogerpauli; D, Cyclocephala brevipennis; E, Cyclocephala kaszabi; F, Cyclocephala ligyrina; G, Cyclocephala arhuacana.

FIGURE 22A–D. Wing. Cyclocephala fasciolata species group. A, Cyclocephala brevipennis; B, C, D, Cyclocephala fasciolata.

FIGURE 23A–D. Wing. Cyclocephala ligyrina species group. A, Cyclocephala arhuacana; B, C, D, Cyclocephala ligyrina.

FIGURE 24A–H. Pygidia (dorsal view). A, Cyclocephala marqueti; B, Cyclocephala proxima; C, Cyclocephala rogerpauli; D, Cyclocephala brevipennis; E, Cyclocephala santandereana (holotype); F, Cyclocephala dalensi; G, Cyclocephala kaszabi; H, Cyclocephala ligyrina.

FIGURE 25A–D. Pygidia and heads (dorsal view). A, Cyclocephala rufa pygidium; B, Cyclocephala arhuacana (holotype) pygidium; C, Cyclocephala brevipennis head (dorsal view); D, Cyclocephala santandereana (holotype) head (dorsal view).

FIGURE 29A–F. Parameres and phallobases, Cyclocephala ligyrina species-group. A, Cyclocephala kaszabi parameres, caudal view; B, Cyclocephala kaszabi phallobase, lateral view; C, Cyclocephala dalensi parameres, caudal view; D, Cyclocephala dalensi phallobase, lateral view; E, Cyclocephala rufa parameres, caudal view; F, Cyclocephala rufa phallobase, lateral view.

FIGURE 30A–C. Parameres and phallobases, Cyclocephala ligyrina species group. A, Cyclocephala arhuacana parameres, caudal view; B, Cyclocephala arhuacana phallobase, lateral view; C, Cyclocephala arhuacana gonocoxite, ventral view.