Euphoria herbacea Species-Group

Orozco, Jesús, 2012, Monographic Revision of the American Genus Euphoria Burmeister, 1842 (Coleoptera: Scarabaeidae: Cetoniinae), The Coleopterists Bulletin (mo 11) 66, pp. 1-182 : 47

Euphoria herbacea Species-Group

(Appendix 3: Plate 2a–i )

Species in the herbacea species-group have the body surface tomentous, apex and sides of the clypeus reflexed in both sexes (strongly in males, weakly to moderately in females), antennal club sexually dimorphic (as long as or longer than stem in males and shorter in females), protibiae not sexually dimorphic (basal tooth frequently subobsolete in males of Euphoria leprosa Burmeister ) and mesotarsal length sexually dimorphic (as long as or longer than mesotibiae in males, shorter in females). Euphoria leprosa is unique in the group for having the dorsum covered abundantly by cretaceous markings, the basal tooth of the protibiae frequently subobsolete in males, and the simpler genitalia. The male genitalia are diagnostic in this group. This group includes species distributed from the United States to Ecuador.

Composition. Four species are included in this group: E. herbacea (Olivier) , E. leprosa Burmeister , E. steinheili Janson , and E. subguttata (Burmeister) .

KEY TO THE SPECIES OF THE HERBACEA SPECIES- GROUP

1. Pronotum with medial, longitudinal, cretaceous line ( Fig. 19a, d ). Pronotal sides moderately to strongly angulate. Scutellum densely punctate ....................... E. leprosa Burmeister (p. 49)

1′. Pronotum without medial, cretaceous line. Pronotal sides weakly angulate to evenly rounded. Scutellum impunctate................2

2. Pronotum sparsely punctate, punctures small. Pronotum of males entirely tomentous ( Fig. 21a, d, e ), pronotum of females partially shiny ( Fig. 21f ), with lateral cretaceous line. Anterior half of elytra impunctate or sparsely punctate. Parameres as in Fig. 21c .......................... ............... E. subguttata (Burmeister) (p. 52)

2′. Pronotum moderately densely punctate. Pronotum not sexually dimorphic as above. Parameres different.................................... 3

3. Abdominal sternites ridged laterally. Pronotum tomentous. Male abdomen with weak, longitudinal depression. Parameres as in Fig. 18c ...... .......................... E. herbacea (Olivier) (p. 47)

3′. Abdominal sternites rounded laterally. Pronotum tomentous or partially shiny. Male abdomen with deep, longitudinal depression. Parameres as in Fig. 20c ....... E. steinheili Janson (p. 50)

CLAVE PARA LAS ESPECIES DEL GRUPO HERBACEA

1. Pronoto con línea cretácea medial longitudinal ( Fig. 19a, d ). Margenes laterales del pronoto moderada a fuertemente angulados. Escutelo densamente punteado........................................ ........................ E. leprosa Burmeister (p. 49)

1′. Pronoto sin línea cretácea medial. Margenes laterales del pronoto ligeramente angulados o redondeados. Escutelo sin punteaduras.....2

2. Pronoto con punteaduras pequeñas y dispersas, completamente tomentoso en machos ( Fig. 21a, d, e ), parcialmente brillante en hembras ( Fig. 21f ), con linea cretácea lateral. Élitros sin punteaduras o con punteaduras dispersas en la mitad anterior. Parámeros como en la Fig. 21c ................ E. subguttata (Burmeister) (p. 52)

2′. Pronoto densamente punteado, sin dimorfismo sexual. Parámeros no como en la Fig. 21c .... 3

3. Esternitos abdominales aquillados lateralmente. Pronoto tomentoso. Machos con depresión longitudinal débil en el abdomen. Parámeros como en la Fig. 18c ............................................ ............................ E. herbacea (Olivier) (p. 47)

3′. Esternitos abdominales redondeados lateralmente. Pronoto tomentoso o parcialmente brillante. Machos con depresión longitudinal profunda en el abdomen. Parámeros como en la Fig. 20c ............................. E. steinheili Janson (p. 50)

Figures

Plate 2. Euphoria species. herbacea species-group: a, b) E. herbacea, c, d) E. leprosa, e, f, g) E. steinheili, h, i) E. subguttata. candezei species-group: j, k) E. candezei, l, m, n) E. lesueuri, o, p, q, r) E. westermanni. hera speciesgroup: s, t, u, v) E. hera.

Fig. 19. Euphoria leprosa. a) Habitus, b) Head, c) Parameres, d) Color variation, e) Temporal distribution, f) Geographic distribution in Belize, Guatemala, Honduras, and Mexico; open square indicates country record only.

Fig. 21. Euphoria subguttata. a) Habitus, b) Head, c) Parameres, d-f) Color variation, g) Temporal distribution, h) Geographic distribution in Mexico.

Fig. 18. Euphoria herbacea. a) Habitus, b) Head, c) Parameres, d-e) Color variation, f) Temporal distribution, g) Geographic distribution in the United States.

Fig. 20. Euphoria steinheili. a) Habitus, b) Head, c) Parameres, d-f) Color variation, g) Temporal distribution, h) Geographic distribution in Colombia, Ecuador, Panama, Peru, and Venezuela; open square indicates country record only.