We describe a new genus of anomaline scarab, Anomalorhina (Coleoptera: Scarabaeidae: Rutelinae: Anomalini) from Costa Rica and Nicaragua. Anomala turrialbana Ohaus is transferred into this genus, and a new species, Anomalorhina osaensis, is described. Anomalorhina is characterized by the clypeal apex that is abruptly reßexed, the base of the frons that has prominent tubercles in males, the pronotum with a depressed fovea in males, and the pronotum with the apical bead posteriorly produced and V-shaped at the middle in females. We summarize the biological importance of the 16 genera of New World anomaline scarabs, including comments on agricultural pests, larvae, and natural history. We provide an overview and synopsis of each of the New World anomaline genera with comments on biology and characteristics for identiÞcation. RESUMEN Se describe un gé nero nuevo de escarabajos anomalinos, Anomalorhina (Coleoptera: Scarabaeidae: Rutelinae) de Costa Rica y Nicaragua. Se transÞere Anomala turrialbana Ohaus a este gé nero nuevo, y se describe una especie nueva, Anomalorhina osaensis. Anomalorhina se caracteriza por tener el ápice del clṍpeo abruptamente elevado, los machos presentan dos tubé rculos prominentes en la base frontal de la cabeza y una fovea en el pronoto, y las hembras tienen el pronoto con el área media del margen anterior proyectado posteriormente en forma de V. Se presenta un sumario sobre la importancia bioló gica de los 16 gé neros de Anomalini del nuevo mundo que incluye comentarios sobre las plagas agrṍcolas, larvas e historia natural. Se provee una sinopsis de cada gé nero de Anomalini del nuevo mundo con comentarios sobre su biologṍa y caracterṍsticas para su identiÞcació n.

Research on the Ecuadorian Rutelinae (Coleoptera: Scarabaeidae) was conducted to determine the diversity of the group in Ecuador and to examine distributional patterns. Results showed that the Rutelinae are distributed in all zoogeographical zones of the country except the Galápagos Islands. Species of Rutelinae occupy a wide variety of habitats ranging from sea level to the high Andes. Areas with the greatest diversity of species, in decreasing order, are the tropical habitats on both sides of the Andes, the subtropical, and the temperate zones. Ecuador has 298 species and 53 genera of Rutelinae. In sum, 36% of the species are endemic to Ecuador.Se realizó un estudio faunístico con el objetivo de conocer la biodiversidad de Rutelinae (Coleoptera: Scarabaeidae) en el Ecuador. Los resultados muestran que la subfamilia Rutelinae está distribuida en todos los pisos zoogeográficos del Ecuador excepto en Galápagos. Las especies de Rutelinae ocupan una amplia variedad de hábitats desde el nivel del mar hasta el piso alto andino. Las áreas con mayor diversidad de especies, en orden decreciente, son los pisos tropicales, subtropicales y temperado. Ecuador tiene 298 especies y 53 géneros de Rutelinae. El 36% de las especies son endémicas.

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Third-instar larvae and pupae of Macraspis aterrima Waterhouse, Macraspis rufonitida Burmeister, and Macraspis chrysis (Linné) from Mexico and Macraspis festiva Burmeister and Macraspis pseudochrysis Landin from Brazil are described. All larvae and pupae were found in rotten logs or stumps of numerous tree species. Illustrations of diagnostic structures, brief comments on the biology of each species, and a key to the seven larvae of the genus are included.

The dynastine scarab genera Parapucaya Prell and Pucaya Ohaus have been historically classified in Pentodontini; however, that tribal classification is not supported under the current tribal circumscriptions. A discussion justifying the transfer of the genera Parapucaya and Pucaya from Pentodontini into Cyclocephalini is presented. This research is based on morphological observations (mandible shape and wing characters among others) and molecular data (genes 28S, COI, and 16S/ND1). A review of both genera is included, providing descriptions, diagnoses, distribution data, illustrations, and keys to species. A revised key to the world genera of Cyclocephalini is also included.