New Larval Descriptions and Biology of Some New World Anomalini Beetles (Scarabaeidae: Rutelinae)

The third-instar larvae of four Anomala species: A. cincta Say, A. forreri Bates, A. sticticoptera Blanchard, and A. discoidalis Bates from Mexico are described and diagnostic characters of the species are illustrated. The third-instar of two Callistethus species: C. vidua (Newman) and C. cupricollis (Blanchard) from Mexico are also described and illustrated. The pupa of A. cincta is described. These six species are included in a key to the larvae of North American and Mexican Anomalini, which now includes four genera and 20 species. The use of larval morphology in the taxonomy of Anomalini is briefly discussed. Data on larval biology and life cycle of the six species are also provided.RESUMEN Se describe e ilustra la morfolog?a de las larvas de tercer estadio de cuatro especies mexicanas de Anomala: A. cincta Say, A. forreri Bates, A. sticticoptera Blanchard y A. discoidalis Bates, y de dos especies mexicanas de Callistethus: C. vidua (Newman) y C. cupricollis (Blanchard), mostrando los caracteres diagnosticos de las especies. Tambin se aporta la descripcion de la pupa de A. cincta. Se presenta una clave para identificar las larvas de 4 generos y 20 especies de Anomalini de Norteamerica y Mexico descritas hasta la fecha, y se discute el uso de la morfologia larvaria en la taxonomia de los Anomalini. Se incluyen datos sobre la biologia larvaria y el ciclo de vida de las seis especies.