Ogyridid larval characters
1. |
Eyestalks short, oviform, close together (Fig. 4A).
|
2. |
Carapace with one pair of anterolateral spines (at pterygostomial angles), and one pair of anteroventral spines; rostrum extends beyond eyes in
O. delli (but not in
O. limicola), with subrostral spines from zoea 2 onward (Fig. 4A). |
3. |
Maxillule without outer plumose seta, and with distal lobe of endopod bearing two setae. |
4. |
Exopod of maxilla from zoea 3 onward with proximal extension, with distal margin smoothly rounded, and with reduction in number of setae on outer proximal margin (Fig. 4B). |
The larvae of
O. delli are further characterised by the absence of spines on abdominal somites 1-5 (as are
O. limicola larvae), and by the loss of telsonic setae 2 and 3 in zoea 4.