Atlas of Atlantic Ostracods
Taxon details
Archiconchoecetta ventricosa (Müller, G.W., 1906)
- Order:
- MYODOCOPA
- Suborder:
- Halocypridina
- Family:
- Halocyprididae
- Subfamily:
- Archiconchoecinae
- Size range (females):
- 1.0-1.2 mm
- Size range (males):
- 0.9-1.0 mm
- Depth:
- mesopelagic
Notes
75 records
Müller (1906) described this species from three Atlantic and one Indian Ocean stations. Since then all further records have come from the Atlantic, from latitudes of 44°N to 23°S. Chavtur and Stovbun (2003) in their revision of Archiconchoeciinae classified this species in a new genus Archiconchoecetta and designated it as the type species for the genus. There is a marked sexual dimorphism in the size and shape of the carapace, and in both sexes the carapace is unusually slim. The bathymetric profiles show that it occurs between 300-800m; there is no obvious explanation for the double maxima seen in the profiles. Live specimens are translucent and almost colourless.
| n | Mean mm | s.d. | Range mm | |
|---|---|---|---|---|
| Female | 109 | 0.935 | 0.039 | 0.86-1.00 |
| Male | 81 | 0.759 | 0.030 | 0.86-1.00 |
| A-1 | 44 | 0.785 | 0.022 | 0.75-0.84 |
| A-2 | 28 | 0.715 | 0.023 | 0.65-0.74 |
| A-3 | 1 | 0.560 |
