Omalacantha
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| Omalacantha | |
|---|---|
.jpg) | |
| Speck-claw Decorator Crab, top view | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Brachyura |
| Family: | Mithracidae |
| Genus: | Omalacantha Streets, 1871 |
| Type species | |
| Omalacantha hirsuta Streets, 1871 | |
| Synonyms[1] | |
|
Milnia Stimpson, 1860 | |
Omalacantha is a genus in the family of crustaceans known as the Mithracidae.
Species in the genus Omalacantha display these features:
- Their carapaces are longer than wide, and pear shaped.
- Their tops are rough with graininess, tubercles and patches of hooked bristles, or setae.
- Rostrums have two strong, slightly downward-curving horns, and two rows of hooked setae along their entire lengths.
- The antennae's basal segments are very broad, forming floors for the depressions (the orbits) from which the eye-bearing stalks protrude
- Above each orbit there's a strong spine.
- Walking legs decrease in size from font to rear, and their segments are varyingly covered with setae.[2]
Distribution
The GBIF map showing locations of georeferenced records of species of Omalacantha indicate that members of the genus naturally occur in western Atlantic and Gulf of Mexico waters from about the US state of North Carolina south to southern Brazil.[3]