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Oribatids
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Adult oribatids usually have a hard brown exoskeleton. Mouthparts are
small, with palps and chelicerae forming a cone-shaped structure. The
most basal leg segment, or coxa, is fused to the body. The ventral
surface has two medial openings with paired valves. Antennae-like
trichobothria may also be present. -view
diagrams- |
Mesostigmatids
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Mesostigmatids generally have distinct linear chelicerae and palps.
Regions of the body may be sclerotized, forming darker shields. Coxae
are free. Respiratory openings in the body, or stigmata, are located
laterally around the midpoint of the length of the body. Chelicerae have 3 segments. -view
diagrams-
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Prostigmatids
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Prostigmatids usually have distinct chelicerae and linear to highly
modified palps. The body may be lightly sclerotized, but shields are
rarely visible. Coxae are free. Stigmata are located on the mouthparts
or the anterior of the body. -view
diagrams-
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