Ogyridid larval characters

1.	Eyestalks short, oviform, close together (Fig. 4A).page 10
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.