Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
First right exopod with subquadrangular
hyaline membrane
(hm)
directed mesially
First right exopod with rounded distally
directed hyaline membrane
(hm)
Taxonomy
Phylum
Arthropoda
Subphylum
Crustacea
Class
Maxillopoda
Subclass
Copepoda
Order
Calanoida
Family
Diaptomidae