Entomobryoidea
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The Entomobryoidea are a superfamily of springtails, tiny hexapods related to insects. In the modern sense, this group is placed in an order called Entomobryomorpha.
Antenna (zoology)
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An antenna is one of a pair of appendages used for sensing in arthropods. Antennae are sometimes referred to as feelers.
Large antennae on a longhorn beetle
A spiny lobster, showing the enlarged second antennae
The large flattened plates in front of the eyes of a slipper lobster are the modified second antennae.
The crab Cancer pagurus, showing its reduced antennae