Topic
Copestylum
About: Copestylum is a research topic. Over the lifetime, 20 publications have been published within this topic receiving 301 citations.
Papers
14 Dec 1972
TL;DR: The distributional patterns and phylogenetic relationships of the Neotropical genera support a Nearctic origin for almost all of the South American milesine flies.
Abstract: A revised generic classification of the Neotropical Milesinae is proposed. Twelve tribes, six subtribes and forty-two genera are recognized and keys to these taxa are provided. Detailed descriptions of the tribes and genera, along with a discussion of the new characters used; are included. The male genitalia and some of the other principal characters for almost all the genera are figured. One new genus (Notiocheilosia, type-species Chilosia nitescens Shannon and Aubertin) is described. The following new synonymies are made: Copestylum Macquart (= Apophysophora Williston, =Megametopon Giglio-Tos, Viereckomyia Currran, =Lepidopsis Curran, =Volosyrpha Shannon and = Volucellosia Curran); Dolichogyna Macquart (=Nosodepus Speiser); Habromyia Williston (=Edwardsietta Hull, = Lycopale Hull and = Criorthrix Hull); Meromacrus Rondani (= Thalamopales Hull); and Sterphus Philippi (=Crepidomyia Shannon, =Tatuomyia Shannon, =Senoceria Hull and =Mutillimyia Hull). Copestylum Macquart is recognised for the New World species of Volucella Geoffroy. Chromocheilosia Hull and Fluke is given full genewic status and transferred from Cheilosia (Cheilosini) to the tribe Chrysogasterini. Eristalis Latreille is partitioned into Eristalis, s.s., Eoseristalis Kanervo and Palpada Macquart. Zoogeography of the Neotropical milesine fauna is discussed. The gross statistics of the fauna are compared to those of other regions and these statistics indicate a long-isolated fauna. The distributional patterns and phylogenetic relationships of the Neotropical genera are also analyzed and these patterns and relationships support a Nearctic origin for almost all of the South American milesine flies. Continental Drift and its possible effect on the Neotropical fauna is also briefly reviewed. Finally the transition between the Nearctic and Neotropical milesine faunas is examined and this transition appears to consist of predominantly Neotropical groups that have moved northward, whereas only one Nearctic group has moved southward in the transitional zone.
89 citations
TL;DR: Twenty-three species of Copestylum (Diptera, Syrphidae) were reared from Bolivia, Costa Rica, Ecuador, Mexico, and Trinidad from 1998 to 2004, and two were new species are described, which suggest independent colonizations of bromeliads.
51 citations
TL;DR: The cactus decomposition rate was significantly faster when insects were present, and the C/N proportion varied over the decomposition process, and a pattern of turnover in the relative abundance of Copestylum species over time was found.
31 citations
TL;DR: Prestoea schultzeana is a monoecious, protandrous palm in the forest understory of Amazonian Ecuador that is the most important pollinator in the region, and its leaf production, population density, sexual expression, phenology, pollination, and the specificity of the floral visitors are studied.
Abstract: Prestoea schultzeana is a monoecious, protandrous palm in the forest understory of Amazonian Ecuador. We studied its leaf production, population density, sexual expression, phenology, pollination, and the specificity of the floral visitors. On average, 1.4 leaves and 0.9 inflorescences are produced per individual per year. The number of staminate flowers per inflorescence is relatively constant compared with the number of pistillate flowers which varies greatly. Flowering occurs in staminate and pistillate phases of approximately 19 and 0-7 days duration, respectively. Flowers open in the morning, and staminate flowers abscise in the afternoon of the same day whereas pistillate flowers last for two days. Flowers are whitish-yellow with a sweet odor and produce nectar. They were visited by Coleoptera (Chrysomelidae, Curculionidae, Nitidulidae, Ptiliidae, Staphylinidae), Hemiptera, Diptera (Drosophilidae, Syrphidae, Ceratopogonidae), Lepidoptera (Nymphalidae), and Hymenoptera (Formicidae, Halictidae). All examined individuals of the syrphid fly Copestylum sp. visiting pistillate flowers carried 100-500 grains of I? schultzeana pollen. Pollen occurred on all body parts, but especially on the legs, and this makes Copestylum sp. the most important pollinator. Most floral visitors were also frequent on the flowers of co-occurring plant species; notably the palm Hyospathe elegans shared most visitor species with I? srhultzeana.
30 citations
TL;DR: Comparison with 23 Copestylum species reared from bromeliads (Bromeliaceae) suggests a common pattern of diversification in that species groups with the largest body sizes are more specialized.
28 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
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| 2021 | 1 |
| 2020 | 1 |
| 2018 | 1 |
| 2017 | 1 |
| 2015 | 1 |
| 2013 | 1 |