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Upcoming Events

Spring 2021 gathering in Louisiana, April 28-May 2. Here's how to add your images.

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama



Dance Fly - Rhamphomyia - male Bee Fly - Bombylius mexicanus - male Bibio xanthopus - male Meromacrus acutus - male Tabanus sackeni or subsimilis - Tabanus - male Horse Fly - Tabanus lineola - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (H)
No Taxon holoptic
Explanation of Names
From Greek holos, whole, and optikos, pertaining to the eye.
holoptic adjective - "whole-eyed", refers to the way the compound eyes (oculi) of some diptera meet along the dorsal mid-line of the head. Compare dichoptic. In some groups, e.g., diptera, the holoptic condition is especially prevalent in males.

Another definition, perhaps seldom used now:
in the case of an eyespot, such as on various lepidoptera, it is holoptic when it is in a perfect state, i.e., having one pupil surrounded by one ring of color (Jardine).
See Also
Internet References
Wikipedia: Holoptic