Atlas of Atlantic Ostracods
Taxon details
Pseudoconchoecia concentrica (Müller, G.W., 1906)
- Order:
- MYODOCOPA
- Suborder:
- Halocypridina
- Family:
- Halocyprididae
- Subfamily:
- Conchoecinae
- Size range (females):
- 1.5-1.8 mm
- Size range (males):
- 1.4-1.6 mm
- Depth:
- epi-/mesopelagic
Notes
68 records
This is a poorly known species that is occasionally encountered in small numbers in the epipelagic and shallow mesopelagic zone of tropical and subtropical oceans. Poulsen (1973) reported a single record of this species at 46°N in the North Atlantic. The juveniles are immediately recognisable because the shoulder vaults are fringed with pegs, but these pegs are shed in the A-1 or adult instars. Leveau (1966) described the juveniles as a new species Conchoecia pectinata – only one other species Conchoecia macrocheira has had its juvenile instars confused in the same way. Living animals are relatively intensely coloured orange-red compared with most other epipelagic halocyprids. Its known latitudinal range is 44°S to 46°N, but the majority of the records are from latitudes <30°.
| All | n | Mean mm | s.d. | Range mm |
|---|---|---|---|---|
| Female | 6 | 1.67 | 0.025 | 1.64-1.72 |
| Male | 10 | 1.54 | 0.078 | 1.40-1.64 |
| A-1 | 9 | 1.29 | 0.080 | 1.20-1.42 |
| A-2 | 37 | 0.87 | 0.134 | 0.64-1.16 |
| A-3 | 14 | 0.51 | 0.040 | 0.44-0.58 |
| A-4 | 9 | 0.38 | 0.023 | 0.34-0.42 |