Below I give a brief overview of what you can find on this site.

Home. The homepage of the Syrphidae in trees (SiT) site with a short explanation of why hoverflies (Syrphidae) are so much fun and an explanation of the content of the site. What is the use of Syrphidae? They are key pollinators, important biocontrol agents as they have aphid feeding larvae while other larvea play a role in decomposing all kind of natural waste. Moreover due to mass migration they provide long range pollen transport and also long range bio-mass transport to support other animal groups and serve as food source for other insects, some amphibians and birds.

A hoverfly? with pictures of adults and larvae, but also biotopes and some grasshoppers. How to recognize Syrphidae (Hoverfly, Flowerfly or Syrphidae), with an explanation of the differences with other flies and especially bees, bumblebees and wasps. Short introduction of the anatomy with accompanying pictures. You will also find photos to recognize the species and also of areas (biotopes) where you can catch the hoverflies.

Breeding boxes and the locations. Here is described how the hoverfly (Syrphidae) nest boxes (tree hanging hoverfly lagoons) can be made and where (see locations) they where put out for the research.

About the owner of SiT with his travels, the foundation, symposia, publications and new species. Here you will find information about who I am and what I have done. With descriptions and photos of the hoverfly (Syrphidae) trips/expeditions and Syrphidae symposia I have participated in or organized. You will also find a list of my publications and species that I have described.

News with information about what's new on the site and information about the 2 annual gliding symposia (International Symposium on Syrphidae).

Links with references to other sites about nature, nature conservation, hoverflies (Syrphidae) pollination, red lists, insect decline or other insects.

Contact Here you can send me a message with questions or comments.

Syrphidae Foundation Here you can find more information about the Syrphidae Foundation and see how you can help protecting these important pollinators.

JvS. This page is dedicated to the Journaal van Syrphidae an electronically published journal specialized on Syrphidae (Hoverflies or Flowerflies) dealing with pollination, mass-migration, Red Lists, insect decline, taxonomy and all other subjects concerning these important insects on a worldwide scale, If you want to keep updated about the publications you can register your self as member.

Odonata (Libellula depressa) This is the continuation of the website of Hans van Steenis, and it is only in Dutch.