Exosphaeroma amplicauda
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| Exosphaeroma amplicauda | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Isopoda |
| Family: | Sphaeromatidae |
| Genus: | Exosphaeroma |
| Species: | E. amplicauda |
| Binomial name | |
| Exosphaeroma amplicauda (Stimpson, 1857) | |
| Synonyms[1] | |
|
Sphaeroma octonctum Richardson, 1899 | |
Exosphaeroma amplicauda is a species of marine isopod of the family Sphaeromatidae.
Exosphaeroma amplicauda has a chitinous exoskeleton, with overlapping, articulated dorsal plates, common to members of the order isopoda. This species exhibits strong sexual dimorphism. Females lack the dorsal tubercles present on the pereonites of the males. Males also have a larger pleotelson and uropods. The largest male measured 8.4 mm, the largest female 7.5 mm.
Exosphaeroma amplicauda is morphologically similar to E. russellhansoni. It can be distinguished by the lack of tubercles on the pereonites of the latter, as well as differences in the structure of the appendix masculina.[1]