Trapezionida
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| Trapezionida | |
|---|---|
 | |
| Trapezionida olivarae | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Anomura |
| Family: | Munididae |
| Genus: | Trapezionida Macpherson & Baba, 2022 |
| Species | |
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See text | |
Trapezionida is a genus of squat lobsters in the family Munididae, described in 2022 by Machordom and colleagues based on molecular phylogenetic and morphological analyses.[1] This genus was established to reclassify several species previously placed in the genus Munida, reflecting a refined understanding of the Munididae family's systematics.[1] Members of Trapezionida are typically found in deep-sea environments across various oceanic regions, including the Pacific and Australian waters.[2]
Species within Trapezionida are characterized by the typical squat lobster morphology, including a flattened carapace, long slender legs, and chelipeds adapted for grasping. Specific diagnostic traits distinguishing Trapezionida from related genera like Munida include variations in carapace spines and leg proportions, though detailed descriptions vary by species.[1] For example, Trapezionida olivarae, commonly known as Olivar's Squat Lobster, is noted for its distinctive eye structure and small size, often hiding in coral rubble.[3]