| Main Ref. | Rodríguez-Flores, P.C., C.A. Seid, G.W. Rouse and G. Giribet, 2023 |
| Utseende refererar till |
| specialiserade organ | |
| annat utseende | |
| andra färger | |
| Anmärkningar |
| Särskilt slående egenskaper | |
| Lateral kroppsform | |
| Tvärsnitt | |
| Dorsal profil av huvudet | |
| Ögontyp | |
| Typ av mun/snyte | |
| Munnens placering | |
| Diagnos | This species can be distinguished from the trifida-group (M. trifida from East Pacific, M. ahyongi and M. comarge from the West Pacific by the following characters: presence of epipods on P1-2 (vs. pereopods without epipods or only in P1) and a carapace that is as long and broad (vs. broader than long). It is closely related to M. carolinensis from the Caroline Ridge in the tropical West Pacific and M. expansa from off Florida and the Caribbean Sea but can be distinguished by the following set of characters: rostrum is spade-shaped and constricted between the eyes (vs. triangular in M. carolinensis and M. expansa); M. carolinensis and M. expansa has smaller and less dense scales on the carapace and pereopods than M. testuda; has an additional pair of spines apart from the epistomial spines, each lateral to the eyestalk and ventral to the frontal margin (vs. absent in M. carolinensis and M. expansa); has epipods on pereopods 1-2 (vs. has pereopods without epipods in M. carolinensis) (Ref. 128308). |
| Ease of Identification |
| Sidolinjer | avbruten: No |
| Fjäll längs sidolinje | |
| Porbärande fjäll längs sidolinje | |
| Fjäll i lateralserie | |
| Antal rader fjäll ovan sidolinje | |
| Antal rader fjäll under sidolinje | |
| Fjäll runt stjärtfensspole | |
| Skäggtömmar | |
| Gälspringor (endast hos hajar/rockor) | |
| Gälräfständer | |
| på undre del av gälbåge | |
| på övre del av gälbåge | |
| totalt | |
| Ryggkotor | |
| preanal | |
| totalt |
| Egenskaper | |
| Antal fenor | |
| Antal småfenor | ryggfena |
| Ventral | |
| Totalt antal hårda fenstrålar | |
| Totalt antal mjuka fenstrålar | |
| Fettfena |
| Egenskaper |
| Antal fenor | |
| Totalt antal hårda fenstrålar | |
| Totalt antal mjuka fenstrålar |
| Bröstfena | Egenskaper |
| Fenstrålar hårda | |
| Fenstrålar mjuka | |
| Bukfenor | Egenskaper |
| Position | |
| Fenstrålar hårda | |
| Fenstrålar mjuka |