Are the eyes paired or unpaired?

Single intra-epidermal eye positioned ventral and anterior to mouth.  Diagram above is lateral view.

Single intra-epidermal eye positioned ventral and anterior to mouth.  Diagram above is lateral view.

Intra-epidermal eyes paired (one or two pair).

Intra-epidermal eyes paired (one or two pair).

General larval morphology = vermiform, oval or round

Larval ciliation = uniform

Larval eyes = present

Larval eyes = intra-epidermal