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Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
| site | collection date | depth | substrate | salin | locality kind | comments | reference | |
|---|---|---|---|---|---|---|---|---|
| A | Itanhaen (Itanhaem, Nossa Senhora da Conceicao de Itanhaem) Bay of Santos, 50 km southwest of Santos, Brazil | May 1952 | mud | type locality | 20 specimens, found 50 km southwest of Santos along with Nygulgus evelinae. In mud of a "manguezal" . Feeds on diatoms. / Nygulgus evelinae | Marcus Er (1954) 425, 480 |