|Copyright: Jose Antonio Del Pino (Black44)
|Date Taken: 2010-05-16|
|Camera: Nikon D90, Sigma 105 F2.8 DG Macro|
|Exposure: f/8, 1/2000 seconds|
|More Photo Info: [view]|
|Photo Version: Original Version|
|Date Submitted: 2010-05-30 13:03|
|[Note Guidelines] Photographer's Note [Spanish]|
|Diptera: Syrphidae |
Syrphidae adults, commonly called flower flies or sing it (name which is also known bees of the genus Euglossa) are quite striking flies. Its length varies from 4 mm to 25 mm and its color ranges from bright yellow to orange to black or dark gray and opaque, and there are some species of iridescent colors. The Syrphidae are abundant almost everywhere except in arid parts of the Old World and in the Antarctic region. In the world know about 5400 species in three subfamilies, Microdontinae, Syrphinae and Eristaliinae. In the latest catalog of Neotropical have reported only 41 species in 14 genera of Costa Rica. But more than 100 specimens of this country especes have accumulated in the museums of the world since the catalog was published and is estimated at about 400 species in total.
Many hoverflies are imitators of Hymenoptera stings (wasps and others). Flies of the flowers are easily distinguished from other flies by having a very particular combination of features in the venation of the wing: A cell apical (R4 +5) and a large anal cell of one third or more of the length of wing that is unique to the hoverflies. A false vein is often cited as a particular feature of these flies. But not in all hoverflies and also it is found in many other families (Conopidae, Empididae and others).
Flies of flowers, as its name implies, are abundant visiting the flowers, which use them as breeding sites and sources of nectar and pollen as food. Only members of a subfamily (Microdontinae) are not found associated with flowers, but rather with their host homigas. The larvae were found in a wide variety of habitats. The larvae of the subfamily Microdontinae live inside ant nests. The Syrphinae are predators of soft-bodied arthropods. However, occasionally some may be scavengers. Those of Eristalinae may be predators or feed on decaying matter (saprophytic) in the litter or decaying wood, excrement (dung), fungi (micetófagas), which pierce plant stems and leaves mined (phytophagous) or may be filtering aquatic or tenants specializing in nests of social insects (termites, wasps and bees).
Flower flies are of great economic importance. Adults are extremely important pollinators. In field crops can play the role of bees. The larvae of the subfamily Syrphinae are important predators of many pests such as aphids, scales, thrips and larvae of butterflies, and are only comparable with ladybirds (Coccinellidae) and Chrysopidae as important predators for biological control. However, some hoverflies are harmful. The larvae of some species of the attack Eumerus Merodon and bulbs and tubers of ornamental plants and vegetables. Some species have been reported to cause accidental myiasis in humans.
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Otra muy buena imagen como todas las tuyas muy hermosa, aunque algo excedidos los blancos. Excelente información que te agredezco.
Hola Jose antonio,
Indudablemente, el enfoque en la diminuta mosca es lo mejor de esta foto; de alguna manera has creado un foco puntuial en ella y ha cobrado relevancia, lo cual es interesante de evaluar, si se toma en cuenta que el área del insecto dificilmente sea de más de un 15% del total del plano de la foto. Muy buen trabajo!. Buena nota anexa.
Saludos, Feliz semana, gracias por compartir.