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Brett C Ratcliffe - One of the best experts on this subject based on the ideXlab platform.

Amat-garcía Germán - One of the best experts on this subject based on the ideXlab platform.

Marc A Branham - One of the best experts on this subject based on the ideXlab platform.

  • synopsis of the cyclocephaline scarab beetles coleoptera scarabaeidae Dynastinae
    ZooKeys, 2018
    Co-Authors: Matthew R Moore, Ronald D Cave, Marc A Branham
    Abstract:

    The cyclocephaline scarabs (Scarabaeidae: Dynastinae: Cyclocephalini) are a speciose tribe of beetles that include species that are ecologically and economically important as pollinators and pests of agriculture and turf. We provide an overview and synopsis of the 14 genera of Cyclocephalini that includes information on: 1) the taxonomic and nomenclatural history of the group; 2) diagnosis and identification of immature life-stages; 3) economic importance in agroecosystems; 4) natural enemies of these beetles; 5) use as food by humans; 6) the importance of adults as pollination mutualists; 7) fossil cyclocephalines and the evolution of the group; 8) generic-level identification of adults. We provide an expanded identification key to genera of world Cyclocephalini and diagnoses for each genus. Character illustrations and generic-level distribution maps are provided along with discussions on the relationships of the tribe's genera.

  • annotated catalog and bibliography of the cyclocephaline scarab beetles coleoptera scarabaeidae Dynastinae cyclocephalini
    ZooKeys, 2018
    Co-Authors: Matthew R Moore, Ronald D Cave, Marc A Branham
    Abstract:

    Cyclocephaline scarab beetles represent the second largest tribe of the subfamily Dynastinae, and the group includes the most speciose genus of dynastines, Cyclocephala. The period following publication of Sebő Endrődi's The Dynastinae of the World has seen a huge increase in research interest on cyclocephalines, and much of this research has not been synthesized. The objective of this catalog and bibliography is to compile an exhaustive list of taxa in Cyclocephalini. This paper provides an updated foundation for understanding the taxonomy and classification of 14 genera and over 500 species in the tribe. It discusses the history of cataloging dynastine species, clarifies issues surrounding the neotype designations in Endrődi's revision of Cyclocephalini, synthesizes all published distribution data for cyclocephaline species, and increases accessibility to the voluminous literature on the group by providing an easily searchable bibliography for each species. We propose the nomen novum Cyclocephala rogerpauli, new replacement name, for C. nigra Dechambre.

  • description of the larva and pupa of phileurus truncatus palisot de beauvois 1806 coleoptera scarabaeidae Dynastinae phileurini with a key to described third instars of new world phileurini
    Zootaxa, 2017
    Co-Authors: Katherine M Arguez, Matthew R Moore, Marc A Branham
    Abstract:

    The third instar and pupa of Phileurus truncatus (Palisot de Beauvois, 1806) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini) is described for the first time based on specimens from Florida, United States of America. An identification key to the third instars of New World Phileurini is also provided.

Paulina Quinteromarin - One of the best experts on this subject based on the ideXlab platform.

  • equal and opposite effects of floral offer and spatial distribution on fruit production and predispersal seed predation in xanthosoma daguense araceae 1
    Biotropica, 2005
    Co-Authors: Carlos Garciarobledo, Gustavo H Kattan, Carolina Murcia, Paulina Quinteromarin
    Abstract:

    Inflorescences of the terrestrial aroid Xanthosoma daguense in the Andes of Colombia are visited by Dinastinae and Nitidulidae beetles. Plants produce one inflorescence at a time, which is pollinated during the first night of opening. Dynastine beetles act as pollinators, whereas Nitidulids lay eggs in the inflorescence and the larvae damage the seeds. We explored the effects of floral offer and distance among inflorescences on the number of pollinator visits, fruit production, and predispersal seed predation. Number of Dynastine visits per inflorescence tended to increase with increasing distances among inflorescences, but fruit predation increased when inflorescences were more clumped. Both pollinator visitation rates and predispersal seed predation were low at high floral offer. Fruit set increased when inflorescences were visited by two or more Dynastines, but the proportion of fruits damaged by Nitidulid larvae was equivalent to the increase in fruit production due to more Dinastine visits. The net result was a similar number of undamaged fruits in all infructescences produced, independent of the number of Dinastine visits. Our results revealed that both pollinators and predators responded to the number of available inflorescences and their spatial distribution, but they had opposing effects on the infructescences. Thus, our study suggests that the interaction of two ecological processes, pollination and predispersal seed predation, may cancel each other's effects under natural conditions. RESUMEN Las inflorescencias de la planta terrestre Xanthosoma daguense L. (Araceae) en los Andes de Colombia son visitadas por escarabajos Dinastinae y Nitidulidae. Las plantas producen una inflorescencia que es polinizada durante la primera noche de antesis. Los escarabajos dinastidos son los principales polinizadores, mientras que los nitidulidos ovipositan en las inflorescencias y sus larvas depredan parte de las semillas en desarrollo. Este estudio explora los efectos de la oferta floral y la distancia entre inflorescencias, sobre el numero de visitas por polinizadores, produccion de frutos y depredacion de semillas. El numero de visitas de los dinastidos por inflorescencia tuvo una tendencia a aumentar cuando la distancia entre inflorescencias aumento, pero la depredacion de frutos aumento cuando las inflorescencias estaban mas agrupadas. Tanto las tasas de visitas por polinizadores, como las de depredacion de semillas bajaron cuando la oferta floral aumento. El numero de frutos producidos aumento cuando las inflorescencias fueron visitadas por dos o mas dinastidos. Los frutos danados por larvas de nitidulidos es proporcional al numero de infrutescencias. El resultado neto fue un numero similar de frutos sin dano en todas las infrutescencias, independiente del numero de visitas de dinastidos. Nuestros resultados indican que tanto los polinizadores como los depredadores de frutos respondieron al numero de inflorescencias disponibles y a su distribucion espacial. Pero los efectos sobre las infrutescencias producidas fueron opuestos. Por lo tanto, este estudio sugiere que los efectos de dos procesos ecologicos, polinizacion, y depredacion de frutos en desarrollo, pueden cancelarse mutuamente bajo condiciones naturales.

  • beetle pollination and fruit predation of xanthosoma daguense araceae in an andean cloud forest in colombia
    Journal of Tropical Ecology, 2004
    Co-Authors: Carlos Garciarobledo, Gustavo H Kattan, Carolina Murcia, Paulina Quinteromarin
    Abstract:

    This study describes a pollination system in a species of Araceae that involves three species of beetle, one of which is also a fruit predator. In a tropical cloud forest in Colombia, inflorescences of Xanthosomna daguense opened at dusk, releasing a sweet scent and raising their temperature 1-3 'C. Soon after, two species of Scarabaeidae (Dynastinae; Cyclocephala gregaria and C. amblyopsis) and one species of Nitidulidae (Macrostola costulata) arrived with pollen. Cyclocephala beetles remained inside the inflorescence for 24 h. The next night, Cyclocephala beetles left the inflorescence after picking up the freshly shed pollen, almost always moving to the nearest inflorescence available. The probability of inflorescence abortion and number of fruits set after the visit of one individual was equivalent for both Cyclocephala species. However, C. gregaria was much more abundant than C. amblyopsis, so it was the most important pollinator. There was a positive relationship between the number of dynastine visits and the number of fruits produced. Besides carrying pollen to the inflorescences, nitidulid beetles had a negative effect on female reproductive success through fruit predation. Nitidulid larvae developed inside the infructescence and preyed on up to 64% of the fruits. However, 8% of inflorescences not visited by dynastines were probably pollinated by nitidulids, because hand- pollination experiments showed that self-pollination was unlikely. Inflorescences potentially pollinated by nitidulids comprised 25% of the fruit crop in the year of our study. This interaction with a fruit predator that is also a potential pollinator resembles brood-site pollination systems in which pollinators prey on part of the fruit set (e.g. Ficus, senita cacti, Yucca), making this system substantially more complex than previously described dynastine-pollinated systems in aroids.

López-garcía, Margarita M. - One of the best experts on this subject based on the ideXlab platform.