Bothidae: L III C9C

Chascanopsetta lugubris Alcock, 1894.

Pelican flounder




Egg diameter in µm

Number of oil globules

Diameter of oil globule in µm

Yolk texture

Perivitelline space

Position of oil globule at hatch

Gut length   at eye- pigment stage








53% of NL



Egg: This egg has only been recognised once. The yolk was rough surfaced, but clear, and the perivitelline space was moderate (Plate A). No pigment was seen in the egg. The lack of pigment, moderate perivitelline space, and small oil globule obviously positioned at the tail of the developing larva, combine to make this egg unique in the area, if these features are reliable. Incubation is probably about 24 hours.

Larva: The 36 hour-old larva was also devoid of pigment (B), but at 5 days a large dark pigment blotch was evident over the anus (C).

Fine spines adorn the finfold edge behind the gut, both dorsally and ventrally (C).

Thanks to DNA barcoding this single larva has been matched with 5 locally collected C. lugubris adults (BOLD). Confirmation awaits further larval barcodes.