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

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Family Erythraeidae

Red Ticks - Balaustium Spider Mite ? Mite - Balaustium mite 27 Mite - Balaustium Erythraeidae larvae? Leptus genus mites on Leiobunum sp ?? harvestman - Leptus Mite
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Subclass Acari (Mites and Ticks)
Superorder Acariformes
Order Trombidiformes
Suborder Prostigmata (Prostigs)
Infraorder Anystina
No Taxon (Parasitengona - velvet mites (including chiggers) & water mites)
No Taxon (Erythraeina - long-legged velvet mites)
Superfamily Erythraeoidea (long-legged velvet mites)
Family Erythraeidae
Explanation of Names
Described by Robineau-Desvoidy, 1828.
This family includes 33 genera grouped in five subfamilies.
Erythraeid larvae are parasitic as larvae. Like ticks on us, parasitengone larvae engorge on host fluids and drop off. Unlike ticks, then they "pupate" (not true pupation, it's actually the protonymph stage which is inactive, therefore called a calyptostatic protonymph) on the ground and emerge as predatory deutonymphs, which look totally different than larvae (relatively hairless with six legs). When deutonymphs have fed enough, they "pupate" (actually the calyptostatic tritonymph) again, and emerge as predacious adults. The deutonymphs and adults are both velvety and have eight legs, but generally look quite different in coloration and body size/shape. [comment by Ray Fisher]